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 with a thesis in 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. I moved to Exeter and took my current position in 2016. 

Research Interests

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 like tiny force and mass sensing.

Selections of Recent Publications (Here for a complete list)
  • Hai-Yao Deng, Theory of non-retarded ballistic surface plasma waves in metal films. Physical Review B 95, 125442 (13 pages) (2017, Mar)
  • 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, F. 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)
  • 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)