Prof. Jianyong Ouyang received his PhD, master and bachelor degrees from the Institute for Molecular Science in Japan, the Institute of Chemistry of the Chinese Academy of Science, and the Tsinghua University in Beijing, respectively. He worked as an assistant professor at the Japanese Advanced Institute of Science and Technology and a postdoctoral researcher at the University of California, Los Angeles (UCLA) before joining the National University of Singapore (NUS) as an assistant professor in 2006. Prof. Ouyang is the recipient of many awards, including The Distinguished Award for Novel Materials and Their Synthesis by International Union of Pure and Applied Chemistry & Organization Committee of Novel Materials and Their Synthesis (2015), NUS Young Investigator Award (2017), and The Amada Award for Science and Technology Research by the Japan-China Science and Technology Exchange Association (1999). He is in the list of World’s top 2% Scientist from 2019 to 2022, and the career ranks are 10,954 (2022), 12,865 (2021), 13,263 (2020) and 16,243 (2019).
Research Interests
The research directions at Prof. Ouyang’s lab include mainly high-performance conducting polymers, thermoelectric polymers, and ionic thermoelectric materials. He made numerous original research contributions. He invented the first polymer/nanoparticle memristor (2004), the first hybrid ionic/electronic thermoelectric converter (2020) and the first adhesive intrinsically conducting polymers (2020), demonstrated the first application of flexible strain sensors for food processing monitoring (2021), observed the ductilization of polymers for the first time (2022), proposed the polaron level splitting to enhance the Seebeck coefficient of thermoelectric polymers (2023), and continually reported world-record conductivities and thermoelectric properties of solution-processable conducting polymers and world-record thermoelectric properties of ionic conductors. He published more than 200 papers in international journals. In terms of Google Scholar, the total citation is close to 30,000, and H-index is 87.
Selected Publications:
Journal Papers
- C. Li, C. Shan, D. Luo, X. Gu, Q. Le, A. K. K. Kyaw*, Z. Dong, K. Sun*, and J. Ouyang.* Great Enhancement in the Seebeck coefficient of PEDOT:PSS by Polaron Level Splitting via π-π Overlapping with Nonpolar Small Aromatic Molecules. Adv. Funct. Mater., 34, 2311578 (2024). (proposed the polar level splitting theory)
- H. He, R. Chen, S. Yue, S. Yu, J. Wei, and J. Ouyang.* Salt-Induced Ductilization and Strain-Insensitive Resistance of an Intrinsically Conducting Polymer. Sci. Adv., 8, eabq8160 (2022). (observed the ductilization of polymers for the first time in the world)
- Z. Liu, H. Cheng*, Q. Le, R. Chen, J. Li*, and J. Ouyang.* Giant Thermoelectric Properties of Ionogels with Cationic Doping. Adv. Energy Mater., 12, 2200858 (2022). (Proposed the cationic doping for ionic thermoelectric materials and reported world-record ionic thermoelectric properties)
- L. Zhang, J. Li, S. Yue, H. He, and J. Ouyang.* Biocompatible Blends of an Intrinsically Conducting Polymer as Stretchable Strain Sensors for Real-Time Monitoring of Starch-Based Food Processing. Adv. Funct. Mater., 31, 2102745 (2021). (Reported the application of flexible sensors for food processing monitoring)
- S. Wang, Y. Fang, H. He, L. Zhang, C. Li, and J. Ouyang.* Wearable Stretchable Dry and Self-Adhesive Strain Sensors with Conformal Contact to Skin for High-Quality Motion Monitoring. Adv. Funct. Mater., 31, 2007495 (2021). (reported flexible sensors self-adhesive to skin)
- L. Zhang, S. K. Kirthika, H. He, C. J. Cai, X. He, H. Gao, S. Yue, C. Li, R. C.-S. Seet, H. Ren*, and J. Ouyang.* Fully Organic, Skin-compliant, Self-adhesive and Stretchable Dry Electrodes for Long-term Motion-robust Epidermal Biopotential Monitoring. Nat. Commun., 11, 4683 (2020). (reported the first self-adhesive conducting polymers in the world)
- H. Cheng and J. Ouyang.* Ultrahigh Thermoelectric Power Generation from Both Ion Diffusion by Temperature Fluctuation and Hole Accumulation by Temperature Gradient. Adv. Energy Mater., 10, 2001633 (2020). (reported the first hybrid ion/electron thermoelectric converter)
- Y. Xia, K. Sun, and J. Ouyang.* Solution-Processed Metallic Conducting Polymer Films as Transparent Electrode of Optoelectronic Devices. Adv. Mater., 24, 2436 (2012). (reported the world-record conductivity of >3,000 S/cm)
- J. Ouyang, C.-W. Chu, C.s Szmanda, L, Ma, and Y, Yang.* Programmable Polymer Thin Film and Nonvolatile Memory Device. Nat. Mater., 3, 918 (2004). (reported the first polymer/nanoparticle memristors)
- J. Ouyang*, Q. Xu, C.-W. Chu, Y. Yang*, G. Li, and J. Shinar. On the Mechanism of Conductivity Enhancement in Poly(3,4-ethylenedioxythiophene):Poly(styrene sulfonate) Film through Solvent Treatment. Polymer, 45, 8443 (2004). (a classic work in conducting polymers)
Book Chapters
- Nishanth K. Gopalan, Abhijit Dutta, and Jianyong Ouyang, “Carbon nanomaterials as electrocatalysts for energy conversion” in volume 11 “Hydrogen and Other Technologies” of the Series “Energy science and technology”, Studium Press, to be published.
- Jianyong Ouyang, “Two-terminal organic memories with metal or semiconductor nanoparticles” in “Charge-trapping nonvolatile memories”, ed. by P. Dimitrakis, Springer, to be published.
- Kuan Sun, Yijie Xia and Jianyong Ouyang, “Next-generation transparent electrode materials for organic solar cells” in “Solar cell materials, devices and systems”, Taylor and Francis, to be published.
- Jianyong Ouyang, Chapter 14 “Application of graphene and graphene oxide in dye-sensitized solar cells” in “Handbook of graphene science”, CRC press, to be published.
- Yijie Xia and Jianyong Ouyang, Chapter 9 “Transparent conducting polymers” in “Organic Optoelectronic Materials” ed. by Yongfang Li, Springer, to be published.
- Jianyong Ouyang, Chapter 12 “Organic/Polymeric Films with Resistive-Switching Behavior and Their Application as Nonvolatile Memory Devices” in “Nonvolatile Memories: Materials, Devices and Application”, volume 2, page 1-19, ed. By Tseung-Yuen Tseng and Simon M. Sze, American Scientific Publishers, 2012. (R-284-000-040-112)
- Yang Yang, Jianyong Ouyang, Liping Ma, Chih-Wei Chu and Ricky Tseng, Chapter 15 “Polymer and Organic Thin-Film Memory Devices” in Semiconducting Polymers: Chemistry, Physics and Engineering, Second Edition”, ed. Georges Hadziioannou & George G. Malliaras, Wiley-VCH, 2006.
- Jianyong Ouyang, Chih-Wei Chu, Ricky Tseng and Yang Yang, Chapter 8 “Electrical Bistable Polymer Films and Their Applications in Memory Devices” in Handbook of Conducting Polymers, 3rd edition (editors: T. A. Skotheim and J. Reynold), CRC Press, 2006, p311.
- Yang Yang, Liping Ma, Jianyong Ouyang, Jun He, Hai Ming Liem, Chih-Wei Chu and Ankita Prakash, “Organic Nonvolatile Memories” in chapter 2 of book Materials for Information Technology (Editors. E. Zschech, C. Whelan, T. Mikolajick), Springer-Verlag, 2005, p197.
Teaching
- MLE4202, Selected Advanced Topics on Polymers
- MLE5214, Advances in Polymeric Materials