226. T. J. Rudzik, R. A. Gerhardt, “Comparison of Hot Pressing and Spark Plasma Sintering in the Densification Behavior of Indium Tin Oxide-borosilicate Glass Composites,” J.Am.Ceramic.Soc, 101[2] 577-589 (2018). Published online February 2, 2018 (DOI: 10.1111/jace.15254).
225. S. L. Mendez, V. M. Conley, R. S. Keith, C. Haynes, R. Gerhardt, “Mentorship in the Engineering Professoriate: Exploring the Role of Social Cognitive Career Theory,” International Journal of Mentoring and Coaching in Education, 6[4] 302-316 (2017). Published online December 4, 2017. (DOI: 10.1108/IJCME-12-2016-0077).
224. Y. Jin, R. A. Gerhardt, “Fabrication and Simulation of Semi-transparent and Flexible PMMA/ATO Conductive Nanocomposites Obtained by Compression Molding At Different Temperatures and Pressures,” AIP Advances, 7[5] 055004 (2017). Published online May 2017. (DOI: 10.1063/1.4983400).
223. Y. Jin, N. Xia, R. A. Gerhardt, “Enhanced Dielectric Properties of Polymer Matrix Composites with BaTiO 3 and MWCNT Hybrid Fillers Using Simple Phase Separation,” Nano Energy, 30 407-416 (2016). Published online December 31, 2016. (DOI: 10.1016/j.nanoen.2016.10.033).
222. N. Xia, R. A. Gerhardt, “Fabrication and Characterization of Highly Transparent and Conductive Indium Tin Oxide Films Made with Different Solution-based Methods,” Materials Research Express, 3[11] 116408 (2016). Published online November 16, 2016. (DOI: 10.1088/2053-1591/3/11/116408).
221. M. H. Bocanegra‐Bernal, C. Dominguez‐Rios, A. Garcia‐Reyes, A. Aguilar‐Elguezabal, J. Echeberria, A. Tiwari, R. A. Gerhardt, M. Szutkowska “SWCNTs versus MWCNTs as Reinforcement Agents in Zirconia and Alumina-based Nanocomposites: Which One to Use,” Advanced Ceramic Materials, 261-297 (2016). Published online August 5, 2016. (DOI: 10.1002/9781119242598.ch7).
220. G. Bei, P. Greil, A. Tiwari, R. A. Gerhardt, M. Skutkowska, “Oxidation-induced Crack Healing in MAX Phase Containing Ceramic Composites,” Advanced Ceramic Materials, 231-260 (2016). Published online August 5, 2016. (DOI: 10.1002/9781119242598.ch6).
219. S. V. Dorozhkin, A. Tiwari, R. A. Gerhardt, M. Skutkowska, “Biphasic, Triphasic, and Multiphasic Calcium Orthophosphates,” Advanced Ceramic Materials, 231-260 (2016). Published online August 5, 2016. (DOI: 10.1002/9781119242598.ch2).
218. K. Ramachandran, T. L. Pruyn, T. Huang, Y. S. Wang, P.M. Singh, W. J. Ready, R. A. Gerhardt, V. Sundaram, R. Tummala, “Investigation of Copper Plated-Through-Holes in Glass Fiber Reinforced Substrates using AC Impedance Spectroscopy,” J. Mat. Sc.-Materials in Electronics, 24[4] 2563-2570 (2015). Published online January 31, 2015 (DOI: 10.1007/s10854-015-2723-y).
217. T. L. Pruyn and R. A. Gerhardt, “Detection of Different Interfaces in Percolated Networks of Antimony Tin Oxide: Borosilicate Glass Composites by Impedance Spectroscopy,” J.Am.Ceramic.Soc. 98[1], 154-162 (2015). Published online October 1, 2014 (DOI: 10.1111/jace.13269).
216. Y. H. Jin and R. A. Rosario, “Prediction of the Percolation Threshold and Electrical Conductivity of Self-Assembled Antimony-Doped Tin Oxide Nanoparticles into Ordered Structures in PMMA/ATO Nanocomposites,” ACS Applied Materials & Interfaces 6[24], 22264-22271(2014). Published online December 5, 2014 (DOI: 10.1021/am5061239).
215. R. L. Muhlbauer, T.L. Pruyn, W.T. Puckett, and R. A. Gerhardt, “Effect of Graphitic Filler Size and Shape on the Microstructure, Electrical Percolation Behavior and Thermal Properties of Nanostructured Multilayered Carbon Films Deposited onto Paper Substrates,” J. Mat. Res 29[3], 472-484(2014). Published online December 5, 2013 (http://dx.doi.org/10.1557/jmr.2013.343).
214. E. M. Sullivan, Y. J. Oh, R. A. Gerhardt, B. Wang, K. Kalaitzidou, “Understanding the Effect of Polymer Crystallinity on the Electrical Conductivity of Exfoliated Graphite Nanoplatelet/Polyactic Acid Composite Films,” Journal of Polymer Research 21[10], 563(2014). Published online 02 September 2014 (DOI: 10.1007/s10965-014-0563-8).
213. R. L. Muhlbauer and R. A. Gerhardt, “Quantification of the Network Structure and Relationship to Surface Electrical Properties of Multiwalled Carbon Nanotube Thin Films Deposited on Paper Substrates, J. Mat. Sc., submitted.
212. T.L. Pruyn and R.A. Gerhardt, “Percolation in Borosilicate glass matrix composites containing Antimony-doped Tin Oxide segregated networks Part II: Examination of Percolation behavior via Impedance Spectroscopy,” J.Am.Ceram.Soc., accepted (2014). Published online 1 April 2014 (DOI: 10.1111/jace.12902).
211. C. G. Carson, G. Brunnello, S. G. Lee, S. S. Jang, R. A. Gerhardt, R. Tannenbaum, “Structure Solution from Powder Diffraction of Copper 1,4-Benzenedicarboxylate,” European Journal of Inorganic Chemistry, 2014[12], 2140-2145(2014). Published online 13 March 2014 (DOI: 10.1002/ejic.201301543).
210. L. H. Huang, P. Jiang, D. Wang, Y. F. Luo, M. F. Li, H. Lee, R. A. Gerhardt, “A Novel Paper-Based Flexible Ammonia Gas Sensor via Silver and SWNT-PABS Inkjet Printing,” Sensors and Actuators B-Chemical, 197, 308-313(2014). Published online March 6, 2014 (DOI: 10.1016/j.snb.2014.02.081).
209. R.L. Whelchel, R.A. Gerhardt and K.C. Littrell, “In-situ Small Angle Neutron Scattering and Ex-Situ Electrical Resistivity to Non-Destructively Monitor Aging of a Nickel Base Superalloy,” Materials Evaluation, 72[10], 1297-1304(2014).
208. M. Karevan, S. Eshraghi, S. Das, R.A. Gerhardt and K. Kalaitzidou, “Effect of processing method on the properties of multifunctional exfoliated graphite nanoplatelets/polyamide 12 composites,” Carbon, accepted (2013). Published online 20 July 2013. (DOI: 10.1016/j.carbon.2013.07.043)
207. T.L. Pruyn and R.A. Gerhardt, “Percolation in Borosilicate glass matrix composites containing Antimony-doped Tin Oxide segregated networks. Part I: Fabrication of Segregated Networks,” J.Am.Ceram.Soc., accepted (2013). (DOI: 10.1111/jace.12534)
206. R.L. Muhlbauer, S.M. Joshi and R.A. Gerhardt, “The Effect of Substrate Pore Size on the Network Interconnectivity and Electrical Properties of Dropcasted Multiwalled Carbon Nanotube Thin Films,” J. Mat.Res 28[12],1617-1624 (2013). Published online 7 Jun. 2013. (DOI: 10.1557/jmr.2013.143)
205. Salil M. Joshi and Rosario A. Gerhardt, “Effect of annealing atmosphere (Ar vs. air) and temperature on the electrical and optical properties of spin-coated colloidal indium tin oxide films,” J. Mat. Sc., 48 [3], 1465 (2013). (doi: 10.1007/s10853-012-6900-6)
204. I.N. Ivanov, M.P. Garrett and R.A. Gerhardt, “Carbon Nanotube Assemblies for Transparent Conducting Electrodes,” Invited chapter for a book entitled Nanostructure Science and Technology. Springer Publications, 117-148 (2013) (DOI: 10.1007/978-1-4614-5016-0_4)
203. R.A. Gerhardt, “Impedance and Dielectric Spectroscopy of Nanoparticulate Films and Composites,” Nanotech 2013 Conference Proceedings, Paper 1433.
202. A. U. Halim and R. A. Gerhardt, “Thin Films Made from Colloidal Antimony Tin Oxide Nanoparticles for Transparent Conductive Applications,” Materials Research Society Symposium Proceedings, Spring 2013 (DOI: 10.1557/opl.2013.861)
201. T.L. Pruyn and R. A. Gerhardt, “Fabrication of Conductive Glass Nanocomposites with Networks of Antimony Tin Oxide,” Materials Research Society Symposium Proceedings, Spring 2013 (DOI: 10.1557/opl.2013.712)
200. R. L. Muhlbauerand R. A. Gerhardt, “Determining In-plane and Thru-plane Percolation Thresholds for Carbon Nanotube Thin Films Deposited on Paper Substrates Using Impedance Spectroscopy,” Materials Research Society Symposium Proceedings, Spring 2013 (DOI: 10.1557/opl.2013.1032)
199. S. M. Joshi and R.A. Gerhardt, “The effect of reactive ion etching parameters on the electrical properties and the removal of residual organics in spin-coated colloidal ITO films,” Materials Research Society Symposium Proceedings, Spring 2013 (DOI: 10.1557/opl.2013.736)
198. R. J. Gussenhoven and R. A. Gerhardt, “Fabrication and Characterization of Antimony Tin Oxide Nanoparticle Networks Inside Polystyrene,” Materials Research Society Symposium Proceedings, Spring 2013 (DOI: 10.1557/opl.2013.711)
197. J.R. Brandt and R.A. Gerhardt ,“Assessment of Homogeneity of Extruded Alumina-SiC Composite Rods Used in Microwave Heating Applications by Impedance Spectroscopy,” Materials Research Society Symposium Proceedings, Spring 2013 (.DOI: 10.1557/opl.2013.657) (DOI: 10.1557/opl.2013.657)
196. Matthew M. Marchese and Rosario A. Gerhardt, “Conductivity of Graphene-Like Thin Films Prepared from Chemically Exfoliated Carbon Nanotubes (CNTs), Highly Oriented Pyrolytic Graphite (HOPG), Natural Flake Graphite, and Carbon Powder,” MRS Proceedings, 1451, pp 125-130. (DOI: 10.1557/opl.2012.1494).
195. B.D. Bertram, R.A. Gerhardt and J.W. Schultz, “Impedance response and modeling of composites containing aligned semiconductor whiskers: Effects of dc-bias partitioning and percolated-cluster length, topology, and filler interfaces,” Journal of Applied Physics 111 (12), 4913-4927(2012). Published online 27 Jun. 2012. (DOI: 10.1063/1.4729119)
194. Himani Sharma, Kanika Sethi, P. Markondeya. Raj, R. A. Gerhardt, Rao Tummala, “Mechanistic Interaction Study of Thin Oxide Dielectric with Conducting Organic Electrode,” Materials Chemistry and Physics 134 [1], 508-513(2012). Published online 28 Mar. 2012.(DOI: 10.1016/j.matchemphys.2012.03.024).
193. Cantwell G. Carson, Jason Ward, Xiao Tao Liu, Justin Schwartz, Rosario A. Gerhardt, and Rina Tannenbaum, “Dopant-controlled crystallization in metal-organic frameworks: The role of Copper(II) in Zinc 1,4–Benzenedicarboxylate,” J. Physical Chemistry C 116 (29), pp 15322–15328 (2012). Published online 26 Jun. 2012. (DOI: 10.1021/jp2117032)
192. R.L. Whelchel, R.A. Gerhardt and K.C. Littrell, “Modeling the Electrical Response of Waspaloy due to the Nucleation, Growth, and Coarsening of g’,” Materials Science Forum Vols. 706-709, 2406-2411(2012). Published online Jan. 2012. (DOI: 10.4028/www.scientific.net/MSF.706-709.2406)
191. M. Schlea, C. Meree, R.A. Gerhardt, E. Mintz, and M.L. Shofner, “Network Behavior of Thermosetting Polyimide/Multiwalled Carbon Nanotube Composites,” Polymer 53,1020-1027(2012). Published online 5 Jan. 2012. (DOI: 10.1016/j.polymer.2011.12.050).
190. Surajit Kumar and Rosario A. Gerhardt, “Role of Geometric Parameters in Electrical Measurements of Insulating Thin Films Deposited on a Conductive Substrate,” Measurement Science and Technology 23,035602 (17pp) (2012). (DOI: 10.1088/0957-0233/23/3/035602)
189. Chunqing Peng, Yonathan S. Thio and Rosario A. Gerhardt, “Effect of Precursor-Layer Surface Charge on the Layer-by-Layer Assembly of Polyelectrolyte/Nanoparticle Multilayers,” Langmuir 28, 84–91(2012). Published online 16 Nov. 2012. (DOI: 10.1021/la203626x).
188. Salil Joshi, Gregory W. Book and Rosario A. Gerhardt, “A Comparative Study of the Effect of Annealing and Plasma Treatments on the Microstructure and Properties of Colloidal Indium Tin Oxide Films and Cold-Sputtered Indium Tin Oxide Films”, Thin Solid Films 520, 2723-2730(2012). Published online 26 Nov. 2011. (DOI: 10.1016/j.tsf.2011.11.052)
187. R.L. Muhlbauer and R.A. Gerhardt, “A Review on the Synthesis of Carbon Nanotube Thin Films,” Invited chapter for a book entitled Carbon Nanotubes: Synthesis, Properties and Applications, Nova Science Publishers, 107-156 (2012)( ISBN: 978-1-62081-914-2)
186. Samual J. Wilson and Rosario A. Gerhardt, “Comparison of the Electrical Properties of PS-PMMA-MWNT Composites Made by Three Different Fabrication Methods,” Materials Research Society Symposium Proceedings, Spring 2012 (http://dx.doi.org/10.1557/opl.2013.1115)
185. Chunqing Peng, Yonathan S. Thio and Rosario A. Gerhardt, “pH-Promoted Exponential Layer-By-Layer Assembly of Polyelectrolyte/Nanoparticle Multilayers,” Chemistry of Materials, 23[20],4548-4556(2011). Published online 22 Sept. 2011. (DOI: 10.1021/cm2019229)
184. B.D. Bertram, R.A. Gerhardt and J.W. Schultz, “Extruded and Pressureless-Sintered Al2O3-SiCw Composite Rods: Fabrication, Structure, Electrical Behavior, and Elastic Modulus,” J.Am.Ceram.Soc. 94[12], 4391-4398(2011). Published online 27 Jul 2011. (DOI: 10.1111/j.1551-2916.2011.04745.x)
183. Lianghui Huang, Kefu Chen, Chunqing Peng and Rosario A. Gerhardt, “Highly Conductive Paper Fabricated with Multiwalled Carbon Nanotubes and Poly (3,4-Ethylenedioxythiopene)-Poly (Styrenesulfonate) by unidirectional drying,” Journal of Materials Science 46[11], 6648-6655(2011). (DOI: 10.1007/s10853-011-5617-2)
182. B.D. Bertram and R.A. Gerhardt, “Effects of Frequency, Percolation, and Axisymmetric Microstructure on the Electrical Response of Hot-Pressed Alumina–Silicon Carbide Whisker Composites,” J. Am. Ceram. Soc. 94[4]1125-1132(2011). Published online 18 Oct 2010. (DOI: 10.1111/j.1551-2916.2010.04156.x)
181. R. L. Whelchel, V.S.K.G. Kelekanjeri, R.A. Gerhardt And J. Ilavsky, “Effect of Aging Treatment on the Microstructure and Resistivity of a Nickel-Base Superalloy,” Metallurgical Transactions A, 42[5], 1362-1373(2011). (DOI:10.1007/s11661-010-0483-0)
180. R.A. Gerhardt, editor, Properties and Applications of Silicon Carbide, In-Tech Publications, 536 pages (2011). (ISBN: 978-953-307-201-2)
179. B.D. Bertram And R.A. Gerhardt, “Properties and Applications of Ceramic Composites Containing Silicon Carbide Whiskers”, Invited chapter for a book entitled Properties And Applications Of Silicon Carbides” In-Tech Publications, pp. 197-230(2011). (DOI: 10.5772/14889)
178. Timothy Pruyn and Rosario A. Gerhardt , “Characterization of Ceramic Powders During Compaction Using Electrical Measurements,” Advances in Bioceramics and Porous Ceramics IV: Ceramic Engineering and Science Proceedings, Volume 32, Issue 6, 199-210(2011). Published online 16 Nov. 2011. (DOI: 10.1002/9781118095263.ch18)
177. Lianghui Huang, Kefu Chen, Chunxiang Lin, Rendang Yang, Rosario A. Gerhardt, “Fabrication and Characterization of Superhydrophobic High Opacity Paper with Titanium Dioxide Nanoparticles,” J. Mat. Sc. 46[8], 2600-2605(2010). (DOI:10.1007/s10853-010-5112-1)
176. Matthew P. Garrett,Ilia N. Ivanov, Rosario A. Gerhardt, Alex A. Puretzky, And David B. Geohegan, “Separation of Junction and Bundle Resistance in Single Wall Carbon Nanotube Percolation Networks by Impedance Spectroscopy,” Appl.Phys.Lett. 97, 163105 (2010). Republished in Virtual Journal of Nanotechnology. Published online 18 Oct. 2010. (DOI: 10.1063/1.3490650)
175. C.Q. Peng, Y.S. Thio and R.A. Gerhardt, “Enhancing the Layer-By-Layer Assembly of Indium Tin Oxide Thin Films by Using Polyethyleneimine, J. Phys. Chem. C 114 [21], 9685–9692(2010). Published online 13 May 2010. (DOI: 10.1021/jp101722u)
174. Ricky L. Whelchel, Rosario A. Gerhardt and Ken Littrell, “Structure-Property Relationships In Waspaloy Via Small Angle Scattering and Electrical Resistivity Measurements,” Proc. 7th International Conference on Superalloys 718 and Derivatives (eds E.A. Ott, J.R. Groh, A. Banik, I. Dempster, T.P. Gabb, R. Helmink, X. Liu, A. Mitchell, G.P. Sjöberg and A. Wusatowska-Sarnek), John Wiley & Sons, Inc., Hoboken, NJ, USA(2010). Published online 17 Aug 2012. (DOI: 10.1002/9781118495223.ch65)
173. Ricky L. Whelchel, V.S.K.G. Kelekanjeri, Rosario A. Gerhardt, Jan Ilavsky and Ken C.Littrell, “Correlating Small Angle Scattering Spectra to Electrical Resistivity Changes in A Nickel-Base Superalloy,” Mat. Res.Symp.Proc. Volume 1268, Warrendale, PA. Paper Number W10-5, (2010). Book published and online. (DOI: 10.1557/PROC-1262-W10-05)
172. Salil Joshi, Gregory W. Book and Rosario A. Gerhardt. “Effect of Substrate Type on the Electrical and Optical Properties of Cold-Sputtered Indium Tin Oxide Films as a Function of Post-deposition Heat Treatment,” Mater. Res. Soc. Symp. Proc. Volume 1256E, Warrendale, PA. Paper Number N16-55, (2010). Online Proceedings Published (DOI: 10.1557/PROC-1256-N16-55)
171. Celeste Mason and Rosario A. Gerhardt, “Fabrication of Transparent, Conductive Phase-Segregated ITO/PC Composites,” Mater. Res. Soc. Symp. Proc. Volume 1257, Warrendale, PA. Paper Number O-3-50, (2010). Book Published and Online. (DOI: 10.1557/PROC-1257-O03-50)
170 Y.Y. Su, R.M. Shemenski and R.A. Gerhardt, “Qualitative and quantitative identification of copper oxides,” Wire Journal International 42[8], 66-75 (2009). SILVER Award Winner. (DOI: 10.1002/sia.2863)
169. Cantwell G. Carson, Kenneth Hardcastle, Justin Schwartz, Xiaotao Liu, Christina Hoffmann, Rosario A. Gerhardt and Rina Tannenbaum, “Synthesis and structure characterization of copper terephthalate metal-organic frameworks,” J. EuropeanPhysical Chemistry 16, 2338-2343 (2009). Published online 21 Apr. 2009. (DOI: 10.1002/ejic.200801224)
168. Charles J. Capozzi, Ilia N. Ivanov, Salil Joshi and Rosario A. Gerhardt, “The effect of atmosphere on the optical properties of as-synthesized colloidal indium tin oxide,” Nanotechnology 20, 145701 (2009). Published online 18 Mar 2009. (DOI: 10.1088/0957-4484/20/14/145701)
167. J. Waddell, R. Ou, C.J. Capozzi, S. Gupta, C.A. Parker, R.A. Gerhardt, K. Seal, S.V. Kalinin and A.P. Baddorf, “Detection of percolating paths in polyhedral segregated network composites using electrostatic force microscopy and conductive atomic force microscopy,” Appl.Phys.Lett. 95, 233122 (2009). Published online 11 Dec. 2009. (DOI: 10.1063/1.3265742)
166. V.S.K.G. Kelekanjeri, L.K. Moss, R.A. Gerhardt and J. Ilavsky, “Quantification of the coarsening kinetics of g’ precipitates in Waspaloy microstructures with different prior homogenizing treatments,” Acta Materialia 57[16], 4658-4670 (2009). Published online 28 July 2009. (DOI: 10.1016/j.actamat.2009.06.019)
165. Brian D. Bertram And Rosario A. Gerhardt, “Room Temperature Properties of Electrical Contacts to Alumina Composites Containing Silicon Carbide Whiskers,” J. Applied Phys. 105, 074902 (2009). Published online 3 April 2009. (DOI: 10.1063/1.3086279)
164. Ricky L. Whelchel, V.S.K.G. Kelekanjeri, and R.A. Gerhardt, “Mechanical and electrical characterization in age hardened Waspaloy microstructures,” J. International Heat Treatment and Surface Engineering 3[1-2], 35-39 (2009). BODYCOTE Award Winner (DOI: 10.1179/174951409X12450558152589)
163. V.S.K.G. Kelekanjeri and R.A. Gerhardt, “Etch pit and γ′ precipitate evolution in controlled Waspaloy microstructures aged at 725, 800 and 875 °C ,” Acta Materialia 57[2], 616 – 627(2009). Published online 10 Nov. 2008. DOI: 10.1016/j.actamat.2008.10.010
162. Surajit Kumar and Rosario A. Gerhardt, “Numerical Study of the Electrical Properties of Insulating Thin Films Deposited on a Conductive Substrate,” COMSOL Users Workshop Proceedings, Boston, October 2009. (Link)
161. Charles J. Capozzi, Zhi Li, Rosario A. Gerhardt and Robert J. Samuels, “Impedance Spectroscopy And Optical Characterization Of Polymethylmethacrylate/Indium Tin Oxide Nanocomposites With Three-Dimensional Voronoi Microstructures, J. Applied Physics 104[11], 114902/1-114902/10(2008). (DOI: 10.1063/1.3032512)
160. Chunqing Peng, Yonathan S. Thio and Rosario A. Gerhardt, “Conductive paper fabricated layer-by-layer assembly of polyectrolytes and ITO nanoparticles,” Nanotechnology 19, 505603 (10pp) (2008). (DOI: 10.1088/0957-4484/19/50/505603)
159. Richard A. Gilstrap, Charles J. Capozzi, Rosario A. Gerhardt and Christopher J. Summers, “Synthesis of a Nonagglomerated Indium Tin Oxide Nanoparticle Dispersion,” Advanced Materials 20, 4163–4166 (2008). Published online 29 Sept 2008. (DOI: 10.1002/adma.200702556)
158. R. Balaji Rao and Rosario A. Gerhardt, “Effect of Alkaline Earth Modifier Ion on the Optical, Magnetic and Electrical Properties of Lithium Nickel Borate Glasses,” Materials Chemistry and Physics 112[1], 186-197 (2008). Published online 7 July 2008. (DOI: 10.1016/j.matchemphys.2008.05.046)
157. Charles J. Capozzi and Rosario A. Gerhardt, “Correlation of the ac Electrical Conductivity and the Microstructure of PMMA/ITO Nanocomposites that Possess Phase-Segregated Microstructures,” J. Phys. Chem. C 112 [49], 19372-19382 (2008). Published online 12 Nov. 2008. (DOI: 10.1021/jp808595q)
156. R.Balaji Rao, Rosario A. Gerhardt and N. Veeraiah, “Spectroscopic Characterization, Conductivity and Relaxation Anomalies in the Li2O-MgO–B2O3 Glass System: Effect of Nickel Ions,” J. Phys.Chem. Solids 69, 2813–2826(2008). Published online 9 July 2008. (DOI: 10.1016/j.jpcs.2008.06.145)
155. V.S.K.G. Kelekanjeri and R.A. Gerhardt, “A closed-form solution for the computation of geometric correction factors for four-point resistivity measurements on cylindrical specimens” Measurement Sci. Technology 19, 025701(12pp) (2008). (DOI: 10.1088/0957-0233/19/2/025701)
154. V.S.K.G. Kelekanjeri and R.A. Gerhardt, “Computation of the Complex Impedance of a Cylindrical Conductor in an Ideal Two-probe Configuration,” Invited chapter for a book entitled Recent Advances in Modeling and Simulation, In-Tech Publications, pp. 85-110(2008).(DOI: 10.5772/5987)
153. V.S.K.G. Kelekanjeri and R.A. Gerhardt, “SPM-based Electrical Characterization of Aged Waspaloy Microstructures,” 2007 MRS Fall Meeting Proceedings, Boston, MA, USA, Volume 1025E (Issue Nanoscale Phenomena in Functional Materials by Scanning Probe Microscopy) Paper 1025-B13-10 (2008). (DOI: 10.1557/PROC-1025-B13-10)
152. R.J. Narayan, C.M. Jin, N. Menegazzo, B. Mizaikoff, R.A. Gerhardt, M. Andara, A. Agarwal, Arvind; C.C. Shih, C.M. Shih, S.J. Ling and Y.Y. Su, “Nanoporous Hard Carbon Membranes for Medical Applications,” J. Nanosc. and Nanotech.7[4-5],1486-1493(2007). (DOI: 10.1166/jnn.2007.331)
151. P.M. Raj, D. Balaraman, V. Govind, I.R. Abothu, W. Lixi, R. Gerhardt, M. Swaminathan and R. Tummala, “Processing and Dielectric Properties of Nanocomposite Thin Film “Supercapacitors” for High-Frequency Embedded Decoupling,” IEEE Transactions on [see also Components, Packaging and Manufacturing Technology, Part A: Packaging Technologies]30[4], 569-578(2007). Published online 27 Nov. 2007. (DOI: 10.1109/TCAPT.2007.901736)
150. V.S.K.G. Kelekanjeri and R.A. Gerhardt, “Electrical characterization of aged Waspaloy microstructures,”Advanced Materials Research, 15-17, 876-881 (2007). Published online Feb. 2006. (DOI: 10.4028/www.scientific.net/AMR.15-17.876)
149. Cantwell G. Carson, R.A. Gerhardt and R. Tannenbaum, “Chemical Stability and Characterization of Rhodium-Diisocyanide Coordination Polymers, J. Phys. Chem. B 111, 14114-14120(2007). Published online 30 Nov. 2007. (DOI: 10.1021/jp0765852)
148. C.J. Capozzi and R.A. Gerhardt, “Novel Percolation Mechanism in PMMA matrix composites containing segregated ITO nanowire networks,” Adv .Functional Matls 17, 2515-2521(2007). Published online 7 Aug. 2007. (DOI: 10.1002/adfm.200600756)
147. V. S.Kumar G. Kelekanjeri and R.A. Gerhardt, “Electric field distribution within a metallic cylindrical specimen for the case of an ideal two-probe impedance measurement” J. Applied Physics 101, 044904(2007). Published online 22 Feb. 2007. (DOI: 10.1063/1.2405734)
146. C.C. Shi, C.M. Shih, K.Y. Chou, Y.Y Su, S.J. Lin and R.A. Gerhardt, “Mechanism of Degradation of AgCl coating on Biopotential Sensors,” J. Biomed.Mater.Res 82A[4], 872-883(2007). Published online 2 Mar 2007. (DOI: 10.1002/jbm.a.31140)
145. L.E. Levine, G.G. Long, R.A. Gerhardt, R. Ou, J. Ilavsky and C.A. Parker, “Self-Assembly of Carbon Black into Nanowires that Form a Conductive Three Dimensional Network,” Applied Phys. Lett 90, 014101-01403(2007). Republished in Virtual Journal of Nanotechnology. (DOI: 10.1063/1.2425011)
144. Surajit Kumar, Heungjoo Shin, Zhengchun Peng, Cantwell G. Carson, Zhong Lin Wang, Rosario A. Gerhardt, and Peter J. Hesketh, “Dielectrophoretic Characterization of SnO2 Nanobelts,” Solid-state sensors, actuators and Microsystems Conference. Transducers 2007 International, 1063-1066 (2007). (DOI: 10.1109/SENSOR.2007.4300317)
143. C.G. Carson, R.A. Gerhardt and R. Tannenbaum, “Dielectric Properties of [Rh(1,4-diisocyanobenzene) (cl)]n with respect to Moisture,” Polymer Preprints 96, 238 (2007).
142. R.J. Narayan, W. Wei, C. Jin, M. Andara, A. Agarwal, R.A. Gerhardt, C.C. Shih, C.M. Shih, S.J. Lin, Y.Y. Su, R. Ramamurti and R.N. Singh, “Microstructural and biological properties of nanocrystalline diamond coatings,” Diamond and Related Matls. 15[11-12], 1935-1940 (2006). Published online 17 Oct. 2006. (DOI: 10.1016/j.diamond.2006.08.024)
141. M. Andara, A. Agarwal, D.Scholvin, R.A. Gerhardt, A. Doraiswamy, C.M. Jin, R.J. Narayan, C.C. Shih, C.M. Shih, S.J. Lin and Y.Y. Su, “Hemocompatibility of diamondlike carbon-metal composite thin films,” Diamond and Related Matls. 15[11-12], 1941-1948 (2006). Published online 30 June 2006. (DOI: 10.1016/j.diamond.2006.05.013)
140. Jianwen Xu, W. Florkowski, R.A. Gerhardt, K.S. Moon and C.P. Wong, “Shear Modulated Percolation in Carbon Nanotube Composites,” J.Phys.Chem.B 110[25], 12289-12292 (2006). Published online 6 June 2006. (DOI: 10.1021/jp061090i)
139. R. Ou, S. Gupta, C.A. Parker and R.A. Gerhardt, “Fabrication and Electrical Conductivity of Poly(methyl methacrylate) (PMMA)/Carbon Black (CB) Composites: Comparison between an ordered carbon black nanowire-like segregated structure and a randomly dispersed carbon black nanostructure” J. Phys. Chem. B 110 [45], 22362-22370(2006). Published online 17 Oct. 2006. (DOI: 10.1021/jp064498o)
138. S. Gupta, R.Ou and R.A. Gerhardt, “Effect of Fabrication Method on the Electrical Properties of Poly(acrylonitrile-co-butadiene-co-styrene)/Carbon Black Composites,” J.Electronic Matls. 35[2], 224-229(2006). (DOI: 10.1007/BF02692439)
137. D.S. Mebane, A.M. Gokhale and R.A. Gerhardt, “Trivariate, stereological length-radius-orientation unfolding derived and applied to alumina-silicon carbide whisker composites,” J.Am.Ceram.Soc. 89[2], 620-626(2006). Published online 28 Sept. 2005. (DOI: 10.1111/j.1551-2916.2005.00709.x)
136. D.S. Mebane and R.A. Gerhardt, “Interpreting Impedance Response of Silicon Carbide Whisker/Alumina Composites Through Microstructural Simulation,” J.Am.Ceram.Soc.
135. R. Ou, G. Cui, R.A. Gerhardt, and R.J. Samuels, “Effect of stretching on the structure and electrical conductivity of doped and undoped poly(phenylene vinylene) thin films,” Electrochimica Acta 51[8-9], 1728-1735(2006). Published online 31 Aug. 2005. (DOI: 10.1016/j.electacta.2005.02.140)
134. V.S. Kumar G. Kelekanjeri and R.A. Gerhardt, “Characterization of Microstructural Fluctuations in Waspaloy exposed to 760 °C for Times Up to 2500 h,” Electrochimica Acta 51[8-9], 1873-1880(2006). Published online 1 Sept. 2005. (DOI: 10.1016/j.electacta.2005.02.099)
133. C.J. Capozzi and R.A. Gerhardt, “Effect of Processing on the Microstructure and Electrical Conductivity of Hot Pressed PMMA/ITO Bulk Nanocomposites,” Extended Abstracts of the MRS Fall 2006 Meeting, Boston, MA. (DOI: 10.1557/PROC-977-0977-FF12-19)
132. V. Siva Kumar G. Kelekanjeri and Rosario A. Gerhardt, “Microstructure-Resistivity Correlations in Controlled Waspaloy Microstructures,” 0977-ff04-11 online version from 2006 fall meeting MRS proceedings (volume 977E). (DOI: 10.1557/PROC-977-0977-FF04-11)
131. Shantanu Talapatra and Rosario A. Gerhardt, “Optimization of the Electrical Conductivity of ABS Nanocomposites Filled with Carbon Black and Carbon Nanotubes,” 0977-ff11-04 online version from 2006 fall meeting MRS proceedings (volume 977E). (DOI: 10.1557/PROC-977-0977-FF11-04)
130. V. S.Kumar G. Kelekanjeri and R.A. Gerhardt, “Finite-element validation of electric field distribution inside a cylindrical conductor for an ideal two-probe impedance measurement”, COMSOL 2006 Users Conference Proceedings, Boston, MA, USA, 2006. (Link)
129. S. Kumar, S. Rajaraman, R. A. Gerhardt, Z.L. Wang and P.J. Hesketh, “Tin Oxide Nanosensor Fabrication Using AC Dielectrophoretic Manipulation of Nanobelts,” Electrochimica Acta 51[5], 943-951(2005). Published online 11 Aug. 2005. (DOI: 10.1016/j.electacta.2005.04.068)
128. C.C. Shih, C.M. Shih, Y.Y. Su, R.A. Gerhardt and S.J. Lin, “The Interaction of Selected Semiconducting Biomaterials with Platelet-Rich Plasma and Whole Blood,” J. Biomed.Mater.Res. 74A, 325-337(2005). Published online 11 July 2005. (DOI: 10.1002/jbm.a.30255)
127. D.S. Mebane, S.I. Lieberman, A.M. Gokhale and R.A. Gerhardt, “Bivariate stereological unfolding procedure for randomly oriented chopped fibers or whiskers,” Acta Materialia 53[18], 4943-4953 (2005). Published online 8 Sept. 2005. (DOI: 10.1016/j.actamat.2005.07.012)
126. R. Ou, S. Gupta, C.A. Parker and R.A. Gerhardt, “Low Percolation Threshold Composites Consisting of PMMA and Carbon Black,” TMS Letters 2[4],117-118(2005). (Link)
125. R.A. Gerhardt, “Impedance Spectroscopy and Mobility Spectra,” Chapter in Encyclopedia of Condensed Matter Physics, Elsevier Press, 350-363 (2005). (DOI: 10.1016/B0-12-369401-9/00685-9)
124. C.H. Cho, S.K. Kelekanjeri G., R.A. Gerhardt and H. Koinuma, “Combinatorial Synthesis of (Al,Ti)N Thin Films,” Mat.Res.Soc.Symp.Proc. 894, 79-84 (2005). (DOI: 10.1557/PROC-0894-LL02-07
123. D.S. Mebane and R.A. Gerhardt, “The Effect of Connectivity on the Impedance Response of Al2O3-SiCw Ceramic Matrix Composites,” E.P.D. Congress 2005, TMS Meeting in San Francisco, pp.157-163, Minerals, Metals and Materials Society, Warrendale, PA; computer Optical Disk(2005).
122. S. Lieberman, D.S. Mebane, A.M. Gokhale and R.A. Gerhardt, “Stereological Unfolding to Determine the Three-Dimensional Bivariate Size and Shape Distribution of TiB Whiskers in Ti-6Al-4V-2.9B,” E.P.D. Congress 2005, TMS Meeting in San Francisco, pp.139-143, Minerals, Metals and Materials Society, Warrendale, PA; computer Optical Disk(2005).
121. R. Ou, R. Samuels and R.A. Gerhardt, “Structure and Electrical Properties of Undoped Oriented Poly(phenylene vinylene) Films,” J.Poly. Sc. & Eng. 42[1]:98-116(2004). Published online 24 Nov. 2003. (DOI: 10.1002/polb.10751)
120. A. Trimurty Jue and R.A. Gerhardt, “Finite Element Analysis of Current Density Patterns in Conductor-Insulator Composites,” Chapter in Ceramic Materials and Multilayer Electronic Devices: Ceramic Transactions, Volume 150, American Ceramic Society, pp. 281-287(2004). (ISBN: 978-1-57498-205-3)
119. R. Ou, R.A. Gerhardt, D. Semler-Rosenthal and R.A. McCauley, “Electrical Properties of Al2O3-CeO2 Composites,” Chapter in Ceramic Materials and Multilayer Electronic Devices: Ceramic Transactions, Volume 150, American Ceramic Society, pp. 273-280(2004). (ISBN: 978-1-57498-205-3)
118. D.S. Mebane and R.A. Gerhardt, “Orientation Dependence of Resistivity in Anisotropic Ceramic Composites,” Chapter in Ceramic Materials and Multilayer Electronic Devices: Ceramic Transactions, Volume 150, American Ceramic Society, pp. 265-272(2004). (ISBN: 978-1-57498-205-3)
117. D.C. Maybury and R.A. Gerhardt, “A Probability Approach to Percolation,” Chapter in Ceramic Materials and Multilayer Electronic Devices: Ceramic Transactions, Volume 150, American Ceramic Society, pp. 63-70(2004). (ISBN: 978-1-57498-205-3)
116. S. Kumar K.G.V. and R.A. Gerhardt, “Effect of high temperature exposure on the microstructure of Waspaloy,” Microscopy & Microanalysis conference 2004. (DOI: 10.1017/S143192760488440X)
115. D.S. Mebane, A.M. Gokhale and R.A. Gerhardt, “The Effect of Microstructural Interconnectivity on the Resistivity of Anisotropic Al2O3-SiCw Composites,” AIP. Conf. Proc. 712, 350-354(2004). (DOI: 10.1063/1.1766549)
C.J. Capozzi, S. Shackelford, R. Ou and R.A. Gerhardt, “Study of Percolation in PMMA/Indium Tin Oxide Composites, Mat.Res.Symp.Proc. 819, 303-308(2004). (DOI: 10.1557/PROC-819-N3.13)
G. Cui and R.A. Gerhardt, “Characterization of the electrical properties of Nickel-based CMSX-4 super-alloys using atomic force microscopy (AFM),” Microscopy & Microanalysis Conference 2004. (DOI: 10.1017/S1431927604882291)
89[2], 538-543(2004). Published online 27 Sept. 2005. (DOI: 0.1111/j.1551-2916.2005.00710.x)
112. P. M. Raj, D. Balaraman, V. Govind, L. Wan, R. Abothu, R. Gerhardt, S. Bhattacharja, M. Swaminathan and R. Tummala, “High Frequency Characteristics of Nanocomposite Thin Film “Supercapacitors” and their Suitability for Embedded Decoupling,” IEEE Proc. Of ECTC Conference,154-161(2004) . (Outstanding Paper Award) (DOI: 10.1109/EPTC.2004.1396595)
111. R. Ou, R.A. Gerhardt, C. Marrett, A. Moulart and J.S. Colton, “Assessment of Percolation and Homogeneity in ABS/Carbon Black Composites by Electrical Measurements,” Composites Part B: Engineering 34B[7], 607-614(2003). Published online 19 July 2003. (DOI: 10.1016/S1359-8368(03)00085-4)
110. R. Ou, R. Samuels and R.A. Gerhardt, “Structure-electrical property study of anisotropic polyaniline films,” J. Poly. Sc.: Pol. Phys. 41[8]:823-841(2003). Published online 5 Mar 2003. (DOI: 10.1002/polb.10430)
109. R.A. Gerhardt, “Impedance spectroscopy of composite materials,” Electromagnetic Materials, Proceedings of the Symposium F, International Conference on Materials for Advanced Technologies, 2nd, Suntec City, Singapore, Dec. 7-12, 2003 (2003), 40-43.
108. R. Ou, R.A. Gerhardt and R. Samuels, “Three Dimensional Structure-Electrical Properties of Oriented PPV and PANI Films,” Advances in Electronic Packaging, EPTC Interpack 2003, 87-92.
107. R. Ou, H. Qin, R.A. Gerhardt and R. Ruh, “Electrical Properties of SiC-AlN Composites,” Ceram. Eng. Sc. Proc. 24[4], 349-354(2003). Published online 26 Mar 2008. (DOI: 10.1002/9780470294826.ch51)
106. H.X. Qin, R.A. Gerhardt and J.S. Zhu, “Doping effects on the properties and microstructure of intergrowth Bi4Ti3O12–SrBi4Ti4O15 thin films,” Integrated Ferroelectrics 45, 183-188(2002). (DOI:10.1080/713718227)
105. R.A. Gerhardt, A. Washabaugh, M.A. Alim and G.M. Choi, eds., Electrically Based Microstructural Characterization III, Materials Research Society Proceedings Volume 699, 365 pages (2002). (ISBN: 1-55899-635-4)
104. G.G. Long, L.E. Levine, R.A. Gerhardt, “USAXS imaging of carbon black/PMMA composites” advanced Photon Source Annual Report 2002, (http://www.aps.anl.gov/apsar2002/longg1.pdf)
103. P. R. Jemian,R. A. Gerhardt, G. G. Long ,, “Anomalous USAXS investigation of Ni-based superalloys,” Advanced Photon Source Annual Report 2002 (http://www.aps.anl.gov/apsar2002/jemian1.pdf)
102. R.A. Gerhardt, R. Ou, J. Colton, C. Marrett and A. Moulart, “Assessment of percolation and homogeneity in ABS/carbon black composites,” Ninth International Conference on Composites Engineering, Proc. ICCE/9, 231 (2002).
101. R. Ou, R. Samuels and R.A. Gerhardt, “The Structure and Electrical Properties of Polyaniline,” Mat.Res.Symp.Proc. 699, 333-338(2002). (DOI: 10.1557/PROC-699-R7.2)
100. X. Zou, T. Makram and R.A. Gerhardt, “Detection of Compositional Fluctuations in High Temperature Exposed Waspaloy,” Mat.Res.Symp.Proc. 699, 301-306(2002). (DOI: 10.1557/PROC-699-R2.6)
99. K. Pinkos, C. Laboy and R.A. Gerhardt, “Effect of Grain Boundaries and Indentation Load on the Electrical Properties of Nickel Base Super-alloys,” Mat.Res.Symp.Proc. 699, 289-294(2002). (DOI: 10.1557/PROC-699-R2.5)
98. Runqing Ou, Robert Samuels and R. A. Gerhardt, “In-plane impedance spectroscopy of doped polyaniline films,” J. Plastic Film and Sheeting 17[4],184-196(2001). (DOI: 10.1106/TL89-774C-VN9P-BKL1)
97. R.A. Gerhardt and R. Ruh, “Volume fraction and whisker orientation dependence of the electrical properties of SiC-whisker-reinforced mullite composites,” J. Am. Ceram. Soc. 84[10],2328-2334(2001). Published online 20 Dec. 2004. (DOI: 10.1111/j.1151-2916.2001.tb01010.x)
96. R.A. Gerhardt, J. Runyan, C. Sana, D.S. McLachlan and R. Ruh, “Electrical Properties of Boron Nitride Matrix Composites: III, Observations Near the Percolation Threshold in BN-B4C Composites”, J. Am. Ceram. Soc. 84[10],2335-2342(2001). Published online 20 Dec. 2004. (DOI: 10.1111/j.1151-2916.2001.tb01011.x)
95. J. Runyan, R.A. Gerhardt and R. Ruh, “Electrical properties of Boron Nitride matrix composites: II, Dielectric Relaxations in Boron Nitride–Silicon Carbide Composites,” J. Am. Ceram. Soc. 84[7], 1497-1503(2001). Published online 20 Dec. 2004. (DOI: 10.1111/j.1151-2916.2001.tb00867.x)
94. J. Runyan, R.A. Gerhardt and R. Ruh, “Electrical properties of Boron Nitride matrix composites: I, Analysis of the McLachlan equation in modeling the conductivity of Boron Nitride–Boron Carbide and Boron Nitride–Silicon Carbide composites”, J. Am. Ceram. Soc. 84[7], 1490-1496(2001). Published online 20 Dec. 2004. (DOI: 10.1111/j.1151-2916.2001.tb00866.x)
93. D.W. Riley and R.A. Gerhardt, “Microstructure and Optical Properties of Submicron Porous Silicon Thin Films Grown at Low Current Densities,” J.Appl.Phys. 87[5], 2169-2177 (2000). (DOI: 10.1063/1.372157)
92. Z. Mustapha, S-W Chan, A. Lam and R.A. Gerhardt, “Accuracy of Energy Dispersive X-Ray Composition Analysis of YBCO on Yttrium-Containing Substrates as Compared to Rutherford Backscattering Spectroscopy,” J.Mat.Sc. 35[2].443-453(2000). (DOI: 10.1023/A:1004723519096)
91. R.A. Gerhardt, “Electrically Based Non-Destructive Microstructural Characterization of All Classes of Materials,” Mat.Res.Symp.Proc. 591, 93-104 (2000). (DOI: 10.1557/PROC-591-93)
90. R.A. Gerhardt, D.W. Riley, C.S. Mucha, E. Mohamed and C.S. Summers, “Optical Properties of Multilayered Porous Silicon Thin Films Grown at Low Current Densities,” Extended Abstracts of International Conference PSST-2000, 103-104(2000).
89. W-Y Lin, R.A. Gerhardt and R.F. Speyer, “Thermal Processing and Properties of BaTi4O9 and Ba2Ti9O20 Dielectric Resonators,” J.Mat.Sc. 34[12], 3021-3025 (1999). (DOI: 10.1023/A:1004624510902)
88. H.M. Kerch, G.G. Long, S. Krueger, R.A. Gerhardt and F. Cosandey, “Characterization of Porosity Over Many Length Scales: Application to Colloidal Gels,” J.Mat.Res. 14[4], 1444-1454 (1999). Published online 31 Jan. 2011. (DOI: 10.1557/JMR.1999.0195)
87. M. Dong and R.A. Gerhardt, “Electrical Characterization of Sol-Gel Derived Pb(Zr,Ti)O3 Ceramics,” Chapter in Dielectric Ceramic Materials: Ceramic Transactions, Volume 100, American Ceramic Society, pp. 367-375 (1999). (ISBN: 978-1-57498-066-0)
86. R.A. Gerhardt, B. Lawless and D.J. Roth, “Impedance Spectroscopy of Waspaloy as a function of Thermal Exposure,” 3rd FAA/DOD/NASA Conference on Aging Aircraft, 1-14 (1999).
85. R.A. Gerhardt, J.R. Kokan, D.J. Roth, B.A. Lerch and B. Lawless, “Novel Electrical Method for Detecting Microstructural Changes in Aged Ni-Based Alloys,” Proceedings of the NASA Hitemp Conf. Vol. 2, 325-345 (1999).
84. R.A. Gerhardt, M.A. Alim and S.R. Taylor, eds., Electrically based microstructural characterization II, Materials Research Society Proceedings Volume 500, 395 pages (1998). (ISBN: 1-55899-405-X)
83. R.A. Gerhardt, “Causes of dielectric dispersion in ferroelectric materials,” Chapter in Advances in Dielectric Ceramic Materials: Ceramic Transactions, Volume 88, American Ceramic Society, pp. 41-60 (1998). (ISBN: 1-57498-013-0)
82. D.W. Riley and R.A. Gerhardt, “Effect on Porosity on the Optical Properties of Anodized Porous Silicon Thin Films,” IEEE Proc. CEIDP, 248-251 (1998). (DOI: 10.1109/CEIDP.1998.733952)
81. J.R. Kokan, R.A. Gerhardt and R. Ruh, “Electrical Properties of BN-B4C and BN-SiC Composites,” IEEE Proc. CEIDP, 252-255 (1998). (DOI: 10.1109/CEIDP.1998.733955)
80. M.Dong and R.A. Gerhardt, “Frequency and Temperature Dependence of the Dielectric Properties of Ferroelectric Materials,” IEEE Proc. CEIDP, 327-330 (1998). (DOI: 10.1109/CEIDP.1998.733998)
79. E.D. Birdsell and R.A. Gerhardt, “Porous Silica: A Potential Material for Low Dielectric Constant Applications,” Mat.Res.Symp.Proc. Vol. 511, 111-116 (1998). (DOI: 10.1557/PROC-511-111)
78. J.R. Kokan, R.A. Gerhardt , R. Ruh and D.S. McLachlan, “Dielectric Spectroscopy of Insulator-Conductor Mixtures,” Mat.Res.Symp.Proc. Vol. 500, 341-346 (1998). (DOI: 10.1557/PROC-500-341)
77. J.R. Kokan, R.A. Gerhardt and C-H Su, “Dielectric Spectroscopy of ZnSe Grown by Physical Vapor Transport,” Mat.Res.Symp.Proc. Vol. 487, 517-522 (1998). (DOI: 10.1557/PROC-487-517)
76. M. Dong and R.A. Gerhardt, “Complex Dielectric Spectroscopy of a Li0.982Ta1.004O3 Ferroelectric Single Crystal,” Mat.Res.Symp.Proc. Vol. 500, 195-200 (1998). (DOI: 10.1557/PROC-500-195)
75. R.A. Gerhardt and D.S. McLachlan, “Frequency Behavior of Percolating Systems,” Progress in Electromagnetics Research Extended Abstracts, July 1998.
74. Y. Berta and R.A. Gerhardt, “Microstructure of Porous Silicon Thin Films,” Microscopy and Microanalysis vol. 4 (Suppl. 2: Proc. Eds. G.W. Bailey, K.B. Alexander, W.G. Jerome, M.G. bond, J.J. McCarthy) Springer 1998, pp. 632-633.
73. Y. Berta and R.A. Gerhardt, “Carbon Induced UV Sensitivity in Aluminum Nitride,” Microscopy and Microanalysis vol. 4 (Suppl. 2: Proc. Eds. G.W. Bailey, K.B. Alexander, W.G. Jerome, M.G. Bond, J.J. McCarthy) Springer 1998, pp. 570-571. (ISBN: 1431-9276)
72. D.W. Riley and R.A. Gerhardt, “A Layer Stacking Model for Porous Silicon Film Growth,” Extended Abstracts of International Conference PSST-98, 218-219 (1998).
71. Y. Kim, R.A. Gerhardt and A. Erbil, “Dynamical Properties of Epitaxial Ferroelectric Heterostructures,” Phys.Rev.B.55, 4477-4485 (1997-II). (DOI: 10.1103/PhysRevB.55.8766)
70. W.Y. Lin, R.A. Gerhardt, R.F. Speyer, W.S. Hackenberger and T.R. Shrout, “Fabrication and Dielectric Properties of Phase-Pure Ba2Ti9O20 Microwave Resonators,” Mat.Res.Symp.Proc. Vol. 453, 501-506 (1997). (DOI: 10.1557/PROC-453-501)
69. J.R. Kokan and R.A. Gerhardt, “Sol-Gel Processing and Characterization of Silica Thin Films for On-Chip Humidity Sensors,” Mat.Res.Symp.Proc. Vol.446, 279-284 (1997). (DOI: 10.1557/PROC-446-279)
68. J.R. Kokan, G. Zhang and R.A. Gerhardt, “Porous Silica in Bulk and Thin Film Form for Use in Humidity Sensing Applications,” Proc. 6th Int. Wksp on Moisture in Microelectronics.
67. R.A. Gerhardt, “Electrically Based Microstructural Characterization of Composites,” Fourth International Conference on Composites Engineering, ICCE/4, pp. 102-103 (1997).
66. A. Erbil, Y. Kim and R.A. Gerhardt , “Giant Permittivity in Epitaxial Ferroelectric Heterostructures,” Phys. Rev. Lett. 77, 1628-1631(1996). (DOI: 10.1103/PhysRevLett.77.1628)
65. K.J. Duchow and R.A. Gerhardt, “Dielectric Characterization of Wood and Wood Infiltrated with Ceramic Precursors,” Mat.Sc.& Eng. C4, 125-131(1996). Published online 8 February 1999. (DOI: 10.1016/0928-4931(95)00129-8)
64. R. Gerhardt, “Porous Silica: A Versatile Material for Microelectronic Applications,” Chapter in Hybrid Microelectronic Materials: Ceramic Transactions, Volume 68, American Ceramic Society, pp. 57-70 (1996). (ISBN: 9781574980134)
63. R.A. Gerhardt, S.R. Taylor and E.J. Garboczi, eds., Electrically based microstructural characterization, Materials Research Society Proceedings Volume 411, 435 pages (1996). (ISBN: 1-55899-314-2)
62. A. Kushwaha, R.A. Gerhardt, Y. Kim and A. Erbil, “Electrical Characterization of MOCVD Grown Epitaxial and Polycrystalline PLT Thin Films,” IEEE Proc. Tenth International Symposium on Applications of Ferroelectric ISAF ‘96, 337-340 (1996). (DOI: 10.1109/ISAF.1996.602762)
61. R.A. Gerhardt and W. Cao, “Distinguishing bulk water from adsorbed water via dielectric measurements,” IEEE Proc. CEIDP, 102-105(1996). (DOI: 10.1109/CEIDP.1996.564605)
60. Y. Kim, A. Erbil, A. Kushwaha and R.A. Gerhardt, “Study of Ferroelectric Thin Film Superlattices,” Mat.Res.Symp.Proc.vol. 433, 339-344 (1996). (DOI: 10.1557/PROC-433-339)
59. A.X. Coles, R.A. Gerhardt and A. Rohatgi, “Optimization of Porous Silicon Reflectance for Solar Cell Applications,” Mat.Res.Symp.Proc. Vol. 426,557-562 (1996). (DOI: 10.1557/PROC-426-557)
58. K.S. Meyers, G. Zhang and R.A. Gerhardt , “Dielectric Properties Dependence on Residual Sodium and Potassium Content in Silica Xerogels,” Mat.Res.Soc.Symp.Proc.Vol.411, 217-222 (1996). (DOI: 10.1557/PROC-411-217)
57. W.Y. Lin, R.A. Gerhardt and R.F. Speyer, “Complex Impedance Analysis of Silica Surface Film on Molybdenum Disilicide,” Mat. Res. Soc. Symp.Proc. vol. 411, 223-228 (1996). (DOI: 10.1557/PROC-411-223)
56. J.R. Kokan and R.A. Gerhardt, “Humidity Effects on Porous Silica Thin Films,” Mat.Res.Soc.Symp.Proc vol. 411, 419-424 (1996). (DOI: 10.1557/PROC-411-419)
55. R. Gerhardt, “Impedance and Dielectric Spectroscopy Revisited: Distinguishing Localized Relaxation from Long-Range Conductivity,” J. Phys. Chem. Solids. 55[12], 1491-1506 (1994). Published online 8 May 2003. (DOI: 10.1016/0022-3697(94)90575-4)
54. J.C. Kaplan and R.A. Gerhardt, “Effect of Trace Carbon on the UV-Induced Behavior of Aluminum Nitride Ceramics,” J. Mat. Res. 9 [9], 2209-2212 (1994). Published online 3 Mar 2011. (DOI: 10.1557/JMR.1994.2209)
53. R.A. Gerhardt, J.R. Kokan and P.A. Kohl, “Low Permittivity Porous Silica Thin Films for MCM-C/D Applications,” in Advances in Ceramics Multi-chip Module(MCM) and High Performance Electronic Materials (ed. W.K. Jones) Kluwer Academic Publishers, Dordrecht, pp. 209-219 (1994). (DOI: 10.1007/978-94-011-0079-3_22)
52. J.C. Kaplan and R.A. Gerhardt, “Effect of Trace Impurities on UV Irradiation Induced Changes in Aluminum Nitride Substrates,” ISHM Proc. 27th Int. Symp. on Microelectronics, 415-420 (1994). (ISBN: 0930815416)
51. H.M. Kerch, H.E. Burdette, R.A. Gerhardt, S. Krueger and G.G. Long, “In-Situ Microstructure Characterization of Sintering of Controlled Porosity Materials,” Mat.Res.Soc.Symp.Proc. 346, 177-182 (1994). (DOI: 10.1557/PROC-346-177)
50. J.R. Kokan, F. Tadayon, R.A. Gerhardt and P.A. Kohl, “Sol-Gel Processing of Porous Silica Thin Films for Interlevel Dielectrics in Integrated Circuits,” IEEE Proc. 44th Annual Electron Components and Technology Conference, pp. 704-711 (1994). (DOI: 10.1109/ECTC.1994.367593)
49. R. Gerhardt, “Microstructural Characterization of Composites via Electrical Measurements,” Ceram. Eng. Sci. Proc. 15[5], 1174-1181 (1994). Published online 28 March 2008. (DOI: 10.1002/9780470314555.ch67)
48. H.M. Kerch, F. Cosandey and R. Gerhardt, “Imaging of Fine Porosity in a Colloidal Silica: Potassium Silicate Gel by Defocus Contrast Microscopy,” J. Non-Cryst. Solids 152, 18-31(1993). Published online 18 April 2003. (DOI: 10.1016/0022-3093(93)90440-9)
47. G.G. Long, S. Krueger, R.A. Gerhardt and R.A. Page, “Small-Angle Neutron Scattering Characterization of Processing/Microstructure Relationships in the Sintering of Crystalline and Glassy Ceramics,” J. Mat. Res. 6 [12], 2706-2715 (1991). Published online 31 Jan. 2011. (DOI: 10.1557/JMR.1991.2706)
46. F. D’Orazio, S. Bhattacharja, W.P. Halperin and R. Gerhardt, “Fluid transport in partially filled porous sol-gel silica glass,” Phys. Rev. B. 42 [10], 6503-6508 (1990). (DOI: 10.1103/PhysRevB.42.6503)
45. W. Cao and R. Gerhardt, “Calculation of Various Relaxation Times and Conductivity for a Single Dielectric Relaxation Process,” Solid State Ionics 42, 213-221 (1990). Published online 24 July 2002. (DOI: 10.1016/0167-2738(90)90010-O)
44. G.G. Long, S. Krueger, P.R. Jemian, D.R. Black, H.A. Burdette, J.P. Cline and R.A. Gerhardt, “Small-Angle-Scattering Determination of the Microstructure of Porous Silica Precursor Bodies,” J. Appl. Cryst. 23, 535-544 (1990). (DOI: 10.1107/S0021889890008263)
43. H.M. Kerch, R. Gerhardt and J. Grazul, “Quantitative Electron Microscopic Investigation of the pore structure in 10:90 Colloidal Silica/Potassium Silicate Sol-Gels,” J. Am. Ceram. Soc. 73[8],2228-2237 (1990). Published online 8 Mar 2005. (DOI: 10.1111/j.1151-2916.1990.tb07581.x)
42. R. Gerhardt and T.R. Grossman, “Characterization of Porosity in Thermal Barrier Coatings,” Chapter in Ceramic Thin and Thick Films: Ceramic Transactions, Volume 11, American Ceramic Society, pp. 189-200 (1990). (ISBN: ISBN: 0944904270)
41. W. Cao, R. Gerhardt and J.B. Wachtman, Jr., “Dielectric Relaxation of Water Adsorbed on Monolithic Porous Silica Gels,” Chapter in Ceramic Dielectrics: Composition, Processing and Properties: Ceramic Transactions, Volume 8, American Ceramic Society, pp. 175-184 (1990). (ISBN: 9780944904220)
40. W. Cao, R. Gerhardt and J.B. Wachtman, Jr., “Effect of Sodium Ions on the Dielectric Conductivity of Porous Silica in Humid Environments,” Mat. Res. Soc. Symp. Proc. vol. 195: 471-476 (1990). (DOI: 10.1557/PROC-195-471)
39. G.G. Long, S. Krueger, D.R. Black, J.P. Cline, P.R. Jemian and R. Gerhardt, “Small Angle Neutron Scattering and Small Angle X-Ray Scattering from Bulk Microporous Silica,” Mat. Res. Soc. Symp. Proc. vol. 166, 421-426 (1990). (DOI: 10.1557/PROC-166-421)
38. Siu-Wai Chan, D.M. Hwang, R. Ramesh, S. M. Sampere, L. Nazar, R. Gerhardt and P. Pruna, “Study of YBa2Cu3O7-x Thin Films Grown on Single Crystal SrTiO3: Not All High Angle Boundaries Destroy Jc,” AIP Conf. Proceedings 200, 172-185 (1990). (DOI: 10.1063/1.39040)
37. H.M. Kerch and R. Gerhardt, “Quantitative Stereological Analysis of the Pore Size Distribution in a Colloidal Silica Sol Gel,” in ELECTRON MICROSCOPY 1990 vol. 4, ed. L.D. Peachey and D.B. Williams, pp. 1078-1079 (1990).
36. R. Gerhardt and R. Ruh, “Electrical Properties of SiC-reinforced Mullite Composites,” Extended Abstracts of the Electronics Division at the 92nd Annual Meeting of the American Ceramic Society, May 1990.
35. R. Gerhardt and Siu-Wai Chan, “Microstructural Dependence of the Superconducting Properties in Mixed Phase Samples,” Extended Abstracts of the Electronics Division at the 92nd Annual Meeting of the American Ceramic Society, May 1990.
34. A. Lam, R. Gerhardt, Siu-Wai Chan, B.J. Wilkens and S. Sampere, “Compositional Analysis of YBaCuO Thin Films,” Extended Abstracts of the Electronics Division at the 92nd Annual Meeting of the American Ceramic Society, May 1990.
33. R. Anderson, R. Gerhardt, J.B. Wachtman, Jr., S. Becher and D.G. Onn, “Thermal, Mechanical and Dielectric Properties of Mullite Cordierite Composites,” Chapter in Ceramic Subtrastes and Packages for Electronic Applications: Advances in Ceramics, Vol. 26, American Ceramic Society, pp. 265-278 (1989). (ISBN: 0-916094-35-9)
32. E.A. Hayri, M. Greenblatt, P. Pruna and R. Gerhardt, “Na2O–P2O5–SiO2 Gels: Preparation and Characterization,” J. NonCryst. Solids. 111, 167-172 (1989). (DOI: 10.1016/0022-3093(89)90277-9)
31. S. Bhattacharja, F. D’Orazio, J.C. Tarczon, W.P. Halperin and R. Gerhardt, “Internal Structure of Porous Silica: A Model System for Characterization by Nuclear Magnetic Resonance,” J. Am. Ceram. Soc. 72 [11], 2126-2130 (1989). Published online 8 Mar. 2005. (DOI: 10.1111/j.1151-2916.1989.tb06043.x)
30. E.A. Hayri, M. Greenblatt, M. Miceli, J. Oliver and R. Gerhardt, “Magnetic, Electrical and Microstructural Properties of YBa2Cu3O7: A Comparison of Sol-Gel, Co-Precipitated and Solid State Processing Routes,” J. Mat. Res. 4 [5],1099-1102 (1989). Published online 31 Jan. 2012. (DOI: 10.1557/JMR.1989.1099)
29. F. D’Orazio, S. Bhattacharja, W.P. Halperin and R. Gerhardt, “Enhanced Self-Diffusion of Water in Restricted Geometry,” Phys.Rev.Lett. 63 [1], 43-46 (1989). (DOI: 10.1103/PhysRevLett.63.43)
28. R. Anderson, R. Gerhardt, J.B. Wachtman, Jr., S. Becher and D.G. Onn, “Thermal, Mechanical and Dielectric Properties of Mullite Cordierite Composites,” Chapter in Ceramic Subtrastes and Packages for Electronic Applications: Advances in Ceramics, Vol. 26, American Ceramic Society, pp. 265-278 (1989). (ISBN: 0-916094-35-9)
27. W. Cao, R. Gerhardt and J.B. Wachtman, Jr., “Low-Permittivity Porous Silica by a Colloidal Processing Method,” Chapter in Ceramic Subtrastes and Packages for Electronic Applications: Advances in Ceramics, Vol. 26, American Ceramic Society, pp. 409-418 (1989). (ISBN: 0-916094-35-9)
26. G.G. Long, S.T. Krueger and R.A. Gerhardt, “Small Angle Neutron Scattering Study of Microporous Silica,” Chapter in Ceramic Subtrastes and Packages for Electronic Applications: Advances in Ceramics, Vol. 26, American Ceramic Society, pp. 171-180 (1989).
25. H. Kerch and R. Gerhardt, “Ultramicrotomy of Porous Ceramics,” Chapter in Ceramic Subtrastes and Packages for Electronic Applications: Advances in Ceramics, Vol. 26, American Ceramic Society, pp. 360-369 (1989).
24. R. Gerhardt, “A Review of Conventional and Non-Conventional Pore Characterization Techniques,” Mat. Res. Symp. Proc. Vol. 137, 75-82 (1989). (DOI: 10.1557/PROC-137-75)
23. H.M. Kerch and R.A. Gerhardt, “Microscopy of Porous Ceramics,” Proc. 47th Annual Meeting of the Electron Microscopy Society of America, ed. G.W. Bailey, 1989, pp. 438-439.
22. H.M. Kerch, R.A. Gerhardt and J.L. Grazul, “A Transmission Electron Microscopic Study of the Densification of 10:90 Colloidal Silica:Alkali Silicate Sol Gels,” Proc. 47th Annual Meeting of the Electron Microscopy Society of America, ed. G.W. Bailey, 1989, pp. 436-437.
21. A.M. Krug, P. Pruna and R. Gerhardt, “Effects of Heat Treatment on the Microstructure and Electrical Properties of Y2BaCuO5,” Extended Abstracts of the Electronics Division at the 91st Annual Meeting of the American Ceramic Society, May 1989.
20. F. Marciniak, M.J. Miceli, P. Pruna and R. Gerhardt, “Microstructure and Electrical Properties of YBa2Cu3O7, Y2BaCuO5 and 50:50 Mixtures of Both,” Extended Abstracts of the Electronics Division at the 91st Annual Meeting of the American Ceramic Society, May 1989.
19. J.B. Wachtman, Jr., R. A. Haber and R. Gerhardt, “Properties of Particulate Composites and Microporous Ceramics,” Mat.Sc.Forum vol. 34, 497-504 (1988). (DOI: 10.4028/www.scientific.net/MSF.34-36.497)
18. W.Cao, R. Gerhardt and J. B. Wachtman, Jr., “Preparation and Sintering of Colloidal Silica–Potassium Silicate Gels,” J. Amer. Ceram. Soc. 71 [12], 1108-1113 (1988). Published online 8 Mar. 2005. (DOI: 10.1111/j.1151-2916.1988.tb05800.x)
17. K.V. Ramanujachary, B.T. Collins, M. Greenblatt, R. Gerhardt and E.A. Reitman, “Dielectric Investigation of the Sliding Charge-Density Wave in T10.3MoO3,” Phys. Rev. B. 38 [11], 7243-7249 (1988). (DOI: 10.1103/PhysRevB.38.7243)
16. R. Gerhardt, “Composites for Electronic Substrate Applications,” Mat. Res. Soc. Symp. Vol. 108, 101-106 (1988). (DOI: 10.1557/PROC-108-101)
15. W. Cao, R. Gerhardt and J.B. Wachtman, Jr., “Effects of Alkali Ions and Water Adsorption on the Dielectric Properties of Bulk Porous Silica By a Colloidal Processing Method,” Extended Abstracts of the Electronics Division at the 90sh Annual Meeting of the American Ceramic Society, May 1988.
14. P. Pruna and R. Gerhardt, “AC Spectroscopy of High Tc Superconductors,” Extended Abstracts of the Electronics Division at the 90sh Annual Meeting of the American Ceramic Society, May 1988.
13. P. Nichols and R. Gerhardt, “Aging Behavior of High Tc Superconducting Phases in the Presence of Controlled Relative Humidity Environments,” Extended Abstracts of the Electronics Division at the 90sh Annual Meeting of the American Ceramic Society, May 1988.
12. S. Clark and R. Gerhardt, “Glass: Boron Nitride Composites for Electronic Substrate Applications,” Extended Abstracts of the Electronics Division at the 90sh Annual Meeting of the American Ceramic Society, May 1988.
11. R.Gerhardt, “Influence of Geometric Factors on Dielectric Constant Measurements,” Extended Abstracts of the Electronics Division at the 90sh Annual Meeting of the American Ceramic Society, May 1988.
10. W.K. Lee, R. Gerhardt and A.S. Nowick, “Anelastic and Dielectric Relaxation of Scandia-Doped Ceria,” J. de Physique 48 [12], C8/251-C8/256 (1987). (DOI: 10.1051/jphyscol:1987835)
9. R. Gerhardt, W.K. Lee and A.S. Nowick, “Anelastic and Dielectric Relaxation of Scandia-Doped Ceria,” J. Phys. Chem. Solids 48 [6], 563-570 (1987). Published online 30 Aug. 2002. (DOI: 10.1016/0022-3697(87)90053-9)
8. R. Gerhardt, A.S. Nowick, M.E. Mochel and I. Dumler, “Grain-Boundary Effect in Ceria Doped with Trivalent Cations, II: Microstructure and Microanalysis,” J. Amer. Ceram. Soc. 69 [9], 647-651(1986). Published online 8 Mar. 2005. (DOI: 10.1111/j.1151-2916.1986.tb07465.x)
7. R. Gerhardt and A.S. Nowick, “Grain-Boundary Effect in Ceria Doped with Trivalent Cations, I: Electrical Measurements,” J. Amer. Ceram. Soc. 69 [9], 641-646 (1986). Published online 8 Mar. 2005. (DOI: 10.1111/j.1151-2916.1986.tb07464.x)
6. R. Gerhardt-Anderson and A.S. Nowick, “The Role of Dopant Ionic Radius in 02–Conducting Solid Electrolytes,” in Transport in Non-stoichiometric Compounds, (ed. by George Simkovich and V.S. Stubican) NATO ASI Series Volume 129, pp 111-124 (1985), (DOI: 10.1007/978-1-4613-2519-2_10)
5. R. Gerhardt-Anderson, F. Zamani-Noor, A.S. Nowick, C.R.A. Catlow and A. Cormack, “Study of Sc2O3 doped Ceria by Anelastic Relaxation,” Solid State Ionics 9 & 10, 931-936 (1983). Published online 18 Sept. 2002. (DOI: 10.1016/0167-2738(83)90113-3)
4. R. Gerhardt-Anderson, A.S. Nowick, M.E. Mochel and I. Dumler, “Microstructure and Microanalysis in Relation to the Grain Boundary Conductivity Effect in Doped Ceria,” Proceedings of the Conference on High Temperature Solid Oxide Electrolytes, August 1983, Brookhaven National Laboratory Report BNL 51738, Vol. I of II, 225-239(1983).
3. Gerhardt, Rosario, “Effects of Dopant Size on Ceria Oxygen Ion Conductors,” Ph.D. Diss. Columbia University, 1983.
2. R. Gerhardt-Anderson and A.S. Nowick, “Ionic Conductivity of CeO2 with Trivalent Dopants of Different Ionic Radii,” Solid State Ionics 5, 547-550(1981). Published online 23 Sept. 2002. (DOI: 10.1016/0167-2738(81)90313-1)
Gerhardt, Rosario, “The Electrical Conductivity in CeO2 Doped with Gd2O3, La2O3 and Sc2O3,” MS thesis Columbia University, 1979.