Photo of Dr Hai-Yao Deng

Dr Hai-Yao Deng

Associate Research Fellow


Telephone: 01392 724198

Extension: (Streatham) 4198

Biographical Outline

I received a PhD from the Hong Kong Polytechnic University in 2012 by a thesis focused on ferroelectrics. I also managed to work on other subjects such as high temperature superconductors and polymer dynamics as well as open quantum systems. Shortly after finishing my PhD, I visited and joined Dr. K. Wakabyashi's group in National Institute for Materials Science (NIMS) in Tsukuba, Japan. There I was awarded a two-year fellowship by the Japan Society for the Promotion of Science (JSPS) to study the electronic and transport properties of atomic layers such as graphene. Currently my interest is mostly in surface plasma waves. 

Research Interests

As a physicist, I have great fun in finding out the workings of Nature. I would love to solve any interesting while sufficiently challenging problems which I come across and find of scientific value. My research interests are broad and they all contribute in one way or another in painting a coherent picture of Nature for me. My current effort is focused on what I call ballistic plasmonics, a subject that has so far received little attention. Although driven by pure curiosity, the knowledge created in this pursuit are highly likely to help resolving some critical issues met with in nano-phononics and related areas. In this project I collaborate with Dr. Chi-Hang Lam from the Hong Kong Polytechnic University and Dr. Katsunori Wakabayashi from National Institute for Materials Science, Japan. Another problem I'm assaulting, in collaboration with Dr. Eros Mariani and Thomas McDermott in Exeter, is how to utilize only D.C. electrical signals to drive a nano-mechanical system into vibrations and how to detect such vibrations. Such systems, called 'NEMS', are of great interest in some applications.

Selected Publications (Here for a complete list)     
  • Hai-Yao Deng, K. Wakabayashi and C.-H. Lam, Universal Self-amplification Channel for Surface Plasma Waves. Physical Review B 95, 045428 (10 pages) (2017, Jan)
  • Hai-Yao Deng, Feng Liu and K. Wakabayashi, Optical Excitation of Surface Plasma Waves without Gratings, EPL 114, 35002 (5 pages) (2016, May)
  • Hai-Yao Deng and K. Wakabayashi, Vacancy effects on electronic and transport properties of graphene nanoribbons, Physical Review B 91, 035425 (13 pages) (2015, Jan)     
  • Hai-Yao Deng and K. Wakabayashi, Edge Effect on a Vacancy State in Semi-infinite Graphene, Physical Review B 90, 115413 (13 pages) (2014, Sep)
  • Zeng-Zhao Li, Cho-Tung Yip, Hai-Yao Deng, Mi Chen, Ting Yu, J. Q. You and Chi-Hang Lam, Approach to solving spin-boson dynamics via non-Markovian quantum trajectories, Physical Review A 90, 022122 (6 pages) (2014, Aug)
  • Hai-Yao Deng, K. Wakabayashi and Chi-Hang Lam, Formation Mechanism of Bound States in Graphene Point Contacts, Physical Review B 89, 045423 (9 pages) (2014, Jan)
  • Hai-Yao Deng, N. R. Li, Haitao Huang, O. T. C. Tsui and Chi-Hang Lam, Power Spectral Density of Free-Standing Viscoelastic Films by Adiabatic Approximation, Langmuir 29, 4283 (7 pages) (2013, Mar)
  • Hai-Yao Deng, On the terahertz dielectric response of cubic BaTiO3: Coexistence of displacive and order-disorder dynamics, EPL 100, 27001 (5 pages) (2012, Oct)