[15] Sneh Sinha, Robert Daniels, Omer Yassin, Matthew Baczkowski, Mattewos Tefferi, Ajinkya Deshmukh, Yang Cao, Gregory Sotzing, “All Organic Textile Display from Robust, Open-air Fabrication Technique”, Advanced Materials Technologies, admt.202100548R1, accepted, Oct. 20, 2021.

[14] Tohid Shahsavarian, Di Zhang, Patrick McGinnis, Steven Walker, Zheyu Zhang, Yang Cao, “Altitude Readiness of High Voltage IGBTs Subjected to the Partial Discharge at Harsh Environmental Conditions for Hybrid Electric Aircraft Propulsion“, IEEE Transactions on Power Electronics, accepted, Oct. 15, 2021.

[13] Chao Wu , Ajinkya A. Deshmukh , Omer Yassin , Jierui Zhou , Abdullah Alamri , John Vellek , Stuti Shukla , Michael Sotzing , Riccardo Casalini , Gregory A. Sotzing , Yang Cao, “Flexible cyclic-olefin with enhanced dipolar relaxation for harsh condition electrification”, Proceedings of the National Academy of Sciences of the United States of America (PNAS), accepted, Oct.4th, 2021.

[12] Yifei Wang, Shamima Nasreen, Deepak Kamal, Zongze Li, Chao Wu, Jindong Huo, Lihua Chen, Rampi Ramprasad, Yang, Tuning Surface States of Metal/Polymer Contacts Toward Highly Insulating Polymer-Based Dielectrics“, ACS Applied Materials & Interfaces, Vol.13, pp.46142-46150, 2021. DOI: 10.1021/acsami.1c12854

[11] Mohamadreza Arab Baferani, Chuanyang Li, Mattewos Tefferi, Ningzhen Wang, Yang Cao, “Large Improvement in DC electrical properties of EPDM with 2D platelet nanoclay”, Journal of Physics D: Applied Physics, Vol. 54, 475304 (11pages), 2021. DOI: 10.1088/1361- 6463/ac2277

[10] Chao Wu, Lihua Chen, Ajinkya Deshmukh, Deepak Kamal, Zongze Li, Pranav  Shetty,  Jierui Zhou, Harikrishna Sahu,  Huan Tran, Gregory Sotzing, Ramp Ramprasad*, Yang Cao*, “Dielectric polymers tolerant to electric field and temperature extremes: Integration of phenomenology, informatics and experimental validation”, ACS Applied Materials & Interfaces, published online, August 13, 2021. DOI: 10.1021/acsami.1c11885

[9] Chuanyang Li, Tohid Shahsavarian, Mohamadreza Arab Baferani, and Yang Cao, “Tailoring  insulation surface conductivity for surface partial discharge mitigation“, Applied Physics Letters, Vol. 119, 032903, 2021. Doi: 10.1063/5.0050456.

[8] Ningzhen Wang, Robert Daniels, Liam Connelly, Michael Sotzing, Chao Wu, Reimund Gerhard, Gregory A. Sotzing, Yang Cao, “All-organic flexible ferroelectret nanogenerator with fabric-based electrodes for self-powered body area networks”, Small, 2103161, 2021. DOI:10.1002/smll.202103161 Inside Front Cover

[7] Chao  Wu, Ajinkya A.  Deshmukh, Zongze  Li, Lihua  Chen, Abdullah  Alamri, Yifei  Wang, Jierui  Zhou, Omer  Yassin, Rampi  Ramprasad, Gregory A.  Sotzing, Yang  Cao, “Remarks on the Design of Flexible High-Temperature Polymer Dielectrics for Emerging Grand Electrification – Exemplified by Poly(oxa)norbornenes”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol.28, pp.1468-1470, 2021. DOI: 10.1109/TDEI.2021.009620

[6] Boya Zhang, Jingjing Liu, Ming Ren, Chao Wu, Thomas J. Moran, Songshan Zeng, Sonia E. Chavez, Zaili Hou, Zongze Li, Anna Marie LaChanceT. Richard Jow, Bryan D. Huey, Yang Cao*, Luyi Sun*, “Reviving the ‘Schottky’ barrier for flexible polymer dielectrics with a superior 2D nano-assembly coating”, Advanced Materials, Vol.33,2101374, 2021. DOI: 10.1002/adma.202101374   Insider Front Cover Highlight

[5] T. Shahsavarian, Y. Pan, Z. Zhang, C. Pan, H. Naderiallaf, J. Guo, C. Li*, Y. Cao*, “A Review of Knowledge-based Defect Identification via PRPD patterns in High Voltage Apparatus“, IEEE ACCESS, Vol.9, pp.77705 – 77728, May 17, 2021. DOI: 10.1109/ACCESS.2021.3082858.

Knowledge-based PRPD pattern analysis for defect and fault predictions in high voltage apparatus.

[4] Tohid Shahsavarian, Xin Wu, Charles Lents, Di Zhang, Chuanyang Li, Yang Cao, “Temperature-dependent Partial Discharge Characteristics of High Temperature Materials at DC Voltage for Hybrid Propulsion SystemsHigh Voltage, Vol. 6, pp.590-598, 2021. DOI: 10.1049/hve2.12110

[3] Deepak Kamal, Tran Huan, Chiho Kim, Yifei Wang, Lihua Chen, Yang Cao, V. Roshan Joseph, and Rampi Ramprasad , “Novel High-Voltage Polymer Insulators using Computational and Data-Driven Techniques, Journal of Chemical Physics, Vol. 154, 174906, 2021. DOI: 10.1063/5.0044306

[2] Peinan Zhou*, Yifei Wang*, Shamima Nasreen*, Yang Cao, “Barrier heights of polymer-electrode interfaces measured via photo injection current methodSurfaces and Interfaces, Vol.24, 101070, 2021. DOI: 10.1016/j.surfin.2021.101070.

[1] Gregory Allen Sotzing, Yang Cao, “Flexible fabric antenna system comprising conductive polymers and method of making same”, US Patent # 11043728, 6/22/2021.

[2] Guest Editorial: Chuanyang Li, Yang Cao, Qi Li, Uwe Reichert, David Fabiani, “Focus on Gas-Solid Interface Charging Physics”, Nanotechnology,

[1] Guest Editorial: Cheng Pan, Yang Cao, Chuanyang Li, “Partial discharge at DC voltage”, High Voltage, Vol. 6, pp.563-564, 2021. DOI:10.1049/hve2.12134.



[15]Hiep Nguyen, Arshiah Mirza, Weiqiang Chen, Yiqi Liu, JoAnne Ronzello, Jack Chapman, Ali Bazzi and Yang Cao, “Investigation of 2D Nano-structured Winding Insulation for High Torque Density Medium-Voltage Motor“, IEEE ACCESS, Vol.9, pp.2274-2282, 2021. DOI: 10.1109/ACCESS.2020.3047103

A revolutionary 2D nanostructured insulation is developed in the manufacturing of large propulsion motors with game-changing torque density and payload efficiency for marine next-generation integrated power system.

[14] Jindong Huo, Yifei Wang, Yang Cao, “3D computational study of arc splitting during power interruption: the influence of metal vapor enhanced radiation on arc dynamics”, Journal of Physics D: Applied Physics, Vol.54, 085502 (18pp),, Oct.30, 2020.

[13] Chuanyang  Li, Tohid  Shahsavarian, Mohamadreza  Arab Baferani, Ningzhen  Wang, JoAnne  Ronzello, Yang  Cao, “High Temperature Insulation Materials for DC Cable Insulation-Part III: Degradation and Surface Breakdown”, IEEE Transactions on Dielectric and Electrical Insulation, Vol.28, pp.240-247, 2021.

[12] Tohid  Shahsavarian, Chuanyang  Li, Mohamadreza  Arab Baferani, JoAnne   Ronzello, Xin  Wu, Di  Zhang, Yang  Cao, “High Temperature Insulation Materials for DC Cable Insulation-Part II: Partial Discharge Behavior at Elevated Altitudes”,  IEEE Transactions on Dielectric and Electrical Insulation, Vol.28, pp.231-239, 2021.

[11] Mohamadreza  Arab Baferani, Chuanyang  Li, Tohid  Shahsavarian, JoAnne  Ronzello, Yang  Cao, “High Temperature Insulation Materials for DC Cable Insulation-Part I: Space Charge”, IEEE Transactions on Dielectric and Electrical Insulation, Vol.28, pp.223-230, 2021.

[10] Mattewos Tefferi, Mohamadreza Arab Baferani, Hiroaki Uehara, Yang Cao, “The Correlation and Balance of Material Properties for DC cable insulation at Design Field”, IEEE ACCESS, Vol.8, pp.187840-187847, Oct. 12, 2020. DOI: 10.1109/ACCESS.2020.3030005

[9] Zhousheng Zhang, Zheming Wang, Gilbert Teyssedre, Tohid Shahsavarian, Mohamadreza Arab Baferani, Geng Chen, Chuanjie Lin, Bo Zhang, Uwe Riechert, Zhipeng Lei, Yang Cao, Chuanyang Li, “Gas-solid Interface Charge Tailoring Techniques: What We Grasped and Where to Go”, Nanotechnology, Vol.32, 122001 (32pp), 2021. DOI: 10.1088/1361-6528/abccea

[8] Chao  Wu, Mohamadreza  Arab, JoAnne  Ronzello, Yang  Cao, “Charge Transport Dynamics and Space Charge Accumulation in XLPE Composites with 2D Platelet Fillers for HVDC Cable Insulation”, IEEE Transactions on Dielectric and Electrical Insulation, Vol.28, pp.3-10, 2021.

[7] Jindong Huo, JoAnne Ronzello, Alex Rontey, Yifei Wang, Linda Jacobs, Timothy Sommerer, Yang Cao, “Development of an arc root model for studying the electrode vaporization and its influence on arc dynamics”, AIP AdvancesVol.10, No.8, 085324, Aug. 31, 2020. DOI: 10.1063/5.0012159

[6] Deepak Kamal, Yifei Wang, Huan Tran, Lihua Chen, Zongze Li, Chao Wu, Shamima Nasreen, Yang Cao, Rampi Ramprasad, “Computable Bulk and Interfacial Electronic Structure Features as Proxies for Dielectric Breakdown of Polymers”, ACS Applied Materials & Interfaces, Vol.12, pp.37182-37187, 2020. DOI: 10.1021/acsami.0c09555.

[5] Yifei Wang, Zongze Li, Chao Wu, Yang Cao, “High-Temperature Dielectric Polymer Nanocomposites with Interposed Montmorillonite Nanosheets”, Chemical Engineering Journal, Vol.401, 126093, 2020. DOI: 10.1016/j.cej.2020.126093

[4] Tohid Shahsavarian, Yang Cao, Emmanouil Anagnostou, Roderick kalbfleisch, “Novel Modulated Equivalent Model of Point-to-Point LCC-based High Voltage AC/DC/AC System for Geomagnetic Storm-Induced Unbalanced Harmonic Studies”, International Journal of Electrical Power and Energy Systems, Vol.122, 106173, 2020. DOI: 10.1016/j.ijepes.2020.106173

[3] Lihua Chen, Chiho Kim, Rohit Batra, Jordan Lightstone, Chao Wu, Zongze Li, Ajinkya A. Deshmukh, Yifei Wang, Tran Huan, Priya Vashishta, Gregory Sotzing, Yang Cao, Rampi Ramprasad, “Frequency-dependent Dielectric Constant Prediction of Polymers using Machine Learning”, npj Computational Materials, vol.6, article 61, pp.1-9, 2020. DOI: 10.1038/s41524-020-0333-6

[2] Chao Wu, Ajinkya A. Deshmukh, Zongze Li, Lihua Chen, Abdullah Alamri, Yifei Wang, Rampi Ramprasad, Gregory A. Sotzing, Yang Cao, “Flexible temperature-invariant polymer dielectrics with large bandgap”, Advanced Materials, Vol.32, 2000499, 2020. Cover highlightDOI: 10.1002/adma.202000499


[1] Zongze Li, Sneh K. Sinha, Gregory M. Treich, Yifei Wang, Qiuwei Yang, Ajinkya A. Deshmukh, Gregory A. Sotzing, Yang Cao, “All-Organic Flexible Fabric Antenna for Wearable Electronics”, Journal of Materials Chemistry C, Vol. 8, pp.5662-5667, 2020. Cover highlightdoi: 10.1039/DOTC00691B.

Graphical abstract: Inside front cover     Graphical abstract: All-organic flexible fabric antenna for wearable electronicsimage file: d0tc00691b-f3.tif



[5] Chao Wu, Zongze Li, Gregory M. Treich, Mattewos Tefferi, Riccardo Casalini, Rampi Ramprasad, Gregory A. Sotzing, Yang Cao, “The Dynamics of Dipolar Relaxation of the Modified Polythiourea with High Dielectric Constant”, Applied Physics Letters, Vol.115, pp.163901, 2019. doi: 10.1063/1.5123484.


[4] Jindong Huo , Svetlana Selezneva, Linda Jacobs, Yang Cao, “Study of Wall Ablation on Low-Voltage Arc Interruption: The effect of Stefan Flow”, Journal of Applied Physics, Vol.125, No.21, pp.213302(1-12), 2019.


[3] Zongze Li, Gregory M. Treich, Mattewos Tefferi, Chao Wu, Shamima Nasreen, Sydney K. Scheirey, Ramamurthy Ramprasad, Gregory A. Sotzing , Yang Cao, “High Energy Density and High Efficiency All-Organic Polymers with Enhanced Dipolar Polarization”, Journal of Materials Chemistry A, Vol.7, pp.15026-15030, 2019. Front cover highlight.

Graphical abstract: Front cover       Graphical abstract: High energy density and high efficiency all-organic polymers with enhanced dipolar polarization

[2] Mattewos Tefferi, Zongze Li, Hiroaki Uehara, Qin Chen, Yang Cao, “Novel EPR Insulated DC Cables for Future Multi-terminal MVDC Integration”, IEEE Electrical Insulation Magazine, Vol.35, No.5, pp.20-27, 2019. Featured Article. DOI: 10.1109/MEI.2019.8804331

Figure 1Figure 5

[1] Hiroaki Uehara, Shiya Iwata, Yasuo Sekii, Tatsuo Takada, Yang Cao ,  “Molecular Dynamics Simulation and Quantum Chemical Calculations of Surfactant Having Suppression Effect on Water Trees”, IEEJ Transactions on Fundamentals and Materials, Vol.139, pp.92-98, 2019.



[7] S. Nasreen, M. Baczkowski, G. Treich,  M. Tefferi, C. Anastaia, R. Ramprasad,  Y. Cao, G. Sotzing,  “Sn‐Polyester/Polyimide Hybrid Flexible Free‐Standing Film as a Tunable Dielectric Material”, Macromolecular Rapid Communications, 1800679, Nov. 2018. DOI: 10.1002/marc.201800679

[6] L. Chen, R. Batra, R. Ranganathan, G. Sotzing, Y. Cao, R. Ramprasad, “Electronic Structure of Polymer Dielectrics: The Role of Chemical and Morphological Complexity”, Chemistry of Materials, Vol.30 (21), pp.7699-7706, 2018. DOI: 10.1021/acs.chemmater.8b02997

[5] Shamima Nasreen, Gregory M. Treich, Matthew L. Baczkowski, Arun K. Mannodi- Kanakkithodi, Aaron BaldwinSydney K. Scheirey, Yang  Cao, Ramamurthy Ramprasad, Gregory A. Sotzing,  “A Material Genome Approach towards Exploration of Zn- and Cd-Coordination Complex Polyester as Dielectrics: Design, Synthesis and Characterization”, Polymer, Elsevier, Vol.159, pp.95-105, 2018. DOI: 10.1016/j.polymer.2018.10.017

[4] Mattewos Tefferi, Mona   Ghassemi,  Christopher   Calebrese, Qin   Chen, Yang  Cao, “Characterizations of Solid-Liquid Interface in a Wet-Mate Subsea HVDC Connector”, Journal of Electrostatics, Elsevier, Vol.94, pp.51-59, 2018. DOI: 10.1016/j.elstat.2018.06.001

 Fig. 1Fig. 2

[3] Mattewos Tefferi, Mona   Ghassemi,  Christopher   Calebrese, Qin   Chen, Yang  Cao, “Correlation between current-voltage characteristics and DC field grading for dielectric liquid used in Wet-Mate DC Connector”, IEEE Transactions on Dielectric and Electrical Insulation, Vol.25, pp.1668 – 1678, 2018. DOI 10.1109/TDEI.2018.007015

Figure 13

[2] Boya  Zhang, Nenad  Uzelac, Yang  Cao, “Fluoronitrile/CO2 Mixture as an eco-friendly alternative to SF6 for medium voltage switchgears”, IEEE Transactions on Dielectric and Electrical Insulation, Vol.25, pp.1340 – 1350, 2018. DOI: 10.1109/TDEI.2018.007146

Figure 18

[1] M. Ghassemi, Y. Cao, Q. Chen, “A Thermo-Electrodynamic Electric Field Dependent Molecular Ionization Model to Design Electrical Insulation System of HVDC Wet-Mate Connectors under Transient Conditions”, IEEE Transactions on Dielectric and Electrical Insulation, Vol.25, pp.476-485, 2018. DOI: 10.1109/TDEI.2018.006691Figure 3



[6] Shamima Nasreen, Gregory M. Treich, Matthew L. Baczkowski, Arun K. Mannodi-Kanakkithodi, Yang Cao, Ramamurthy Ramprasad, Gregory Sotzing, “Polymer Dielectrics for Capacitor Application”, Kirk-Othmer Encyclopedia of Chemical Technology, John Wiley & Sons, Inc., Published Online: 15 DEC 2017, DOI: 10.1002/0471238961.koe00036

[5] S. Gupta, I. Offenbach, J. Ronzello, Y. Cao, S. Boggs, R.A. Weiss and M. Cakmak, “Evaluation of Poly(4-methyl-1-pentene) as a Dielectric Capacitor Film for High Temperature Energy Storage Applications”, Journal of Polymer Science, Part B: Polymer Physics, Vol.55, pp. 1497-1515, 2017.

[4] Hiroaki Uehara, Zongze Li, Qin Chen, Gian Carlo Montanari,and Yang Cao, “Space Charge Behavior under Thermal Gradient in Cross-linked Polyethylene and Ethylene-propylene Rubber”, Sensors and Materials, Vol.29, No (8), pp.1199-1212, 2017.

[3] M. Ghassemi, Q. Chen, Y. Cao, “The Influence of Magnitude and Rise Time of Applied Voltage and the Type of Oil on Streamer Growth in a Wet-Mate DC Connector”, IEEE Transactions on Dielectric and Electrical Insulation, Vol. 24, Issue 3, pp. 1646-1656, June 2017.

[2] M. Ghassemi, M.B. Tefferi, Q. Chen, Y. Cao, “A Thermo-Electrodynamic Electric Field Dependent Molecular Ionization Model to Realize Positive Streamer Propagation in a Wet-Mate DC Connector”, IEEE Transactions on Dielectric and Electrical Insulation, Vol. 24, Issue 2, pp. 901-914, April 2017.

[1] Gregory M. Treich, Mattewos Tefferi, Shamima Nasreen, Arun Mannodi-Kanakkithodi, Zongze Li, Rampi Ramprasad, Gregory A. Sotzing and Yang Cao, “A Rational Co-Design Approach to the Creation of New Dielectric Polymers with High Energy Density”, IEEE Transactions on Dielectric and Electrical Insulation, Vol. 24, Issue 2, pp. 732-743, April 2017.



[8] Z.Z Li, C.C. Xu, H. Uehara, S.A. Boggs, Y. Cao, “Transient characterization of extreme field conduction in dielectrics”, AIP Advances, 6, 115025, 2016.

[7] Bogdan Neculaes, Antonio Caiafa, Yang Cao, Bruno De Man, Peter M. Edic, Kristopher Frutschy, Satish Gunturi, Lou Inzinna, Joseph Reynolds, Mark Vermilyea, David Wagner, Xi Zhang, Yun Zou, Norbert J. Pelc, and Brian Lounsberry, “Multisource inverse-geometry CT. Part II. X-ray source design and prototype” Medical Physics 43, 4617 (2016)

[6] Gregory Martin Treich, Shamima Nasreen, Arun Mannodi-Kanakkithodi, Rui Ma, Mattewos Tefferi, James Flynn, Yang Cao, Rampi Ramprasad, and Gregory Allen Sotzing, “Optimization of Organotin Polymers for Dielectric Applications” ACS Appl. Mater. Interfaces, DOI: 10.1021/acsami.6b04091

[5] P. Cox, R. Fleming, F. Krajick, S. Boggs, Y. Cao, “AC and Impulse Performance of Medium Voltage Ethylene Propylene– Rubber Cables With Over 25 Years of In-Service Aging in a Wet Underground Environment”, IEEE Electrical Insulation Magazine, Vol. 32, No.3, pp23-27,2016

[4] Mannodi-Kanakkithod , G.M. Treich, T.D. Huan, R. Ma, M. Tefferi, Y. Cao, G.A. Sotzing, R.Ramprasad, “Rational Co-Design of Polymer Dielectrics for Energy Storage”, Advanced Materials,  DOI: 10.1002/ adma.201600377, 2016

[3] G.A. Sotzing, Y. Cao, “Fabric sensor, method of making the fabric sensor, and applications thereof”, US Patent App. 15/135,895, 4/22/2016.

[2] US Patent 9,390,857, Issued on July 12, 2016, Film Capacitor

[1] US Patent 9,293,972, Issued on March 22, 2016, Apparatus for forming insulation for electrical components



[6] R. Ma,   V. Sharma,   A. F. Baldwin, M. Tefferi, I. Offenbach, M. Cakmak, R. Weiss, Y. Cao,   R. Ramprasad, G A. Sotzing “Rational Design and Synthesis of Polythioureas as Capacitor Dielectrics”, J. Mater. Chem. A, 2015 3 (28), 14845-14852, DOI: 10.1039/C5TA01252J

[5] A. F. Baldwin, T. D. Huan, R. Ma, A. M. Kanakkithodi, M. Tefferi, J. E. Marszalek, N. Katz, Y. Cao, R. Ramprasad, GA. Sotzing “Rational Design of Organotin Polyesters”, Macromolecules, 2015, 48 (8), pp 2422–2428

[4] A. F. Baldwin, R. Ma, A. M. Kanakkithodi, T. D. Huan, C. C. Wang, M. Tefferi, J. E. Marszalek, M. Cakmak, Y. Cao, R. Ramprasad, GA. Sotzing “Poly(dimethyltin glutarate) as a Prospective Material for Dielectric Applications”, Advanced Materials, 27, 347-351, 2015.

[3] Q.M. Zhang, M. Yu, Y. Cao, “Electrets and Related Phenomena”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 22, No. 3, pp.1335-1336, 2015.

[2] US Patent 8,928,441, Issued on January 6, 2015, Liquid cooled magnetic component with indirect cooling for high frequency and high power applications

[1] Sotzing, Y. Cao, “A FABRIC SENSOR, METHOD OF MAKING THE FABRIC SENSOR, AND APPLICATIONS THEREOF”, U.S. Provisional Application No. 62/151,623, April 23, 2015