Yang Cao

Office: GANT 105D
Phone: (860) 486-0915
Email: yang.cao@uconn.edu


  • PhD in Material Science, University of Connecticut, 2002
  • MS in Condensed Matter Physics, Tongji University, 1995
  • BS in Applied Physics, Tongji University, 1992



  • High voltage engineering
  • Flexible electronics
  • Protection and Grid asset management


  • NASA DC Breaker, Co-PI, NASA/NPS, Notice of Award, 2020-2023
  • ONR “High Torque Density Motor Insulation” (N00014-19-1-2306), PI, 5/15/19 to 5/14/2022
  • ONR “Accelerated Co-Designs of High K Polymer Dielectrics” (N00014-19-1-2304), PI, 5/01/19 to 4/30/2022
  • G&W “DC Research Project”, PI, 3/25/19 to 3/24/2020
  • G&W “SF6 Alternative Material Compatibility”, PI, 2/8/19 to 2/7/2020
  • NASA HVDC Aerospace Electric System, UTRC/NASA, PI, 4/1/2018-12/30/2018
  • Komatsu, Motor insulation, Komatsu, PI, 4/1/2018-3/30/2021
  • Nextflex, Printing passive circuit, Nextflex/Boeing, Co-PI, 4/1/2018-3/30/2019
  • MURI, Tracking, Diagnosing and Impeding Dielectric Breakdown in Polymers, Co-PI (N00014-17-1-2656), 8/1/2017-7/31/2022. https://muri.ims.uconn.edu
  • NSF Phase I i/UCRC University of Connecticut Site: Center for Novel High Voltage/Temperature Materials and Structures (HVT) (NSF 1650544), Site Director, 2/1/2017 –   http://www.hvtcenter.org
  • GE/ABB, Arc Interruption Gas Dynamics, PI, 9/1/2013-12/30/2019
  • ONR DURIP (N00014-16-1-2885), PI, 7/15/2016-10/14/2018
  • ONR “High Field Aging” (N00014-16-R-BA01), Co-PI, 7/1/2016-12/31/2018
  • ARL “Nanocoating” (W911NF-16-2-0146), PI, 8/23/2016-12/22/2016
  • ONR “Propulsion Insulation” (N00014-15-1-2413), PI, 5/15/2015-12/30/2019
  • EPR Cable Consortium, PI, 1/1/1998-12/30/2025
  • ONR MURI “Capacitors” (N00014-10-1-0944), Co-PI, 10/1/2010-9/30/2016
  • DOE “Wet-Mate DC Connector”, Co-PI, 9/1/2014-6/30-2016
  • DOE “DC Cabling” (DE-AR0000231), PI, 1/22/2012- 2/28/2014


  • Professional: IEEE Senior Member
  • Research: GE Technical Career Award (2013), GE Technical Achievement Award (2011), GE Innovation Award (2010)
  • Service: Member of Technical Program Committee, IEEE Dielectric and Electrical Insulation Society 2019, 2018, 2017



  • 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, am-2020-09555x.R2, accepted.
  • 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
  • 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.
  • 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
  • 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 highlight.jpgDOI: 10.1002/adma.202000499


  • 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


  • 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


  • 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. DOI: 10.1063/1.5090867


  • 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. DOI: 10.1039/C9TA03601F

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

  • 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. 10.1109/MEI.2019.8804331

Figure 1Figure 5

  • 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. DOI: 10.1541/ieejfms.139.92


  1. 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 
  2. 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
  3. 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
  5. 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. 10.1109/TDEI.2018.007015
  6. 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. 10.1109/TDEI.2018.007146
  7. 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. 10.1109/TDEI.2018.006691


  1. 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, Published Online: 15 DEC 2017, DOI: 10.1002/0471238961.koe00036
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.