Wei-Chih Liu

Professor
Department of Physics
National Taiwan Normal University
Taipei 116, Taiwan, Republic of China

Email: wcliu@phy.ntnu.edu.tw
Office : Science Building A215
Tel: +886-2-7734-6043, +886-2-2934-3183
Fax: +886-2-2932-6408

Associate Professor, 2002-2006, Department of Physics, National Taiwan Normal University
Assistant Professor, 1999-2002, Department of Physics, National Taiwan Normal University
Postdoctoral Fellow, 1996-1999, Rochester Theory Center for Optical Science and Engineering, University of Rochester

Ph.D. in Chemical Physics, 1991-1996, University of Maryland at College Park
M.S., 1987-1989, Department of Physics, National Taiwan University
B.S., 1983-1987, Department of Physics, National Taiwan University

Course (2009 Fall semester)

• Computational Physics (1) (NTNU E-Learing Moodle platform)
• Applications of Computer in Physics (1) (NTNU E-Learing Moodle platform)

Current Research

• Nano-optics and Plasmonics - Surface plasmon of subwavelength metallic structures

  Nano-optics studeis the interaction of light with nanostructures. For subwavelength metallic structures, it is possible to excite surface plasmon to enhance and to localize light.
  
  Near-field distribution around the array of three pairs of silver nanocylinders with a TM illumination. For an animation of near-field distributions of different sizes of nanocylinders, click here.
  

• High-density near-field optical disks and light-harvesting/emitting devices with plasmonic metamaterials
  Metallic nanostructures can enhance and localize light to crearte plasmonic metamaterials whose special optical properties can apply to near-field ultra-high density optical data storage and light-harvesting/emitting nano-devices. Collaborating with Prof. Tsai (Dept. of Physics, NTU), we study their physical mechanism.
  
• Strong-field laser-atom interaction
  Laser-atom interaction; two-electron correlation effects; multiphoton processes; above threshold ionization (ATI); high harmonic generation (HHG).
  
  The two-electron wavefunction in an intense laser field (5x10¹⁴W/cm²). The wavefunction for each electron is reduced into a one-dimensional wavefunction and is drawed in x and y direction respectively. For an animation of the wavefunction under a 6-cycle pulse, click here.
  
  
• Subluminal and superluminal light

  The propagating velocity of light can be near to zero or larger then c by laser-atom interaction. Propagation of light in model atoms is simulated with semi-classical approach to study the dynamical behavior.

Research Group

Publications

This page is always under construction...

Last modified: 2009-09-16