冒牌自然老師

Professor Kam Tai Chan陳錦泰教授
Professor of Electronic Engineering,
Director of Biomedical Engineering Programme,
Director of Center for Advanced Research in Photonics
The Chinese University of Hong Kong 香港中文大學

2009年12月24日(星期四) 14:00-15:00
December 24, 2009 (Thu.) PM 14:00-15:00
台灣大學凝態科學中心暨物理新館304室
Room 304, Condensed Matter Science and Physics Building, NTU

Plasmonics has been receiving a lot of research attention lately because of the advancements in nano-technology which has enabled the observation of new optical phenomena derived from structures and devices having nanometer-scale dimensions. There are many well-known examples and potential applications of plasmonics, such as superlens effect, improving the efficiencies of solar cells and light emitting diodes, nanolithography, nano-optical circuits and etc. However, the dimensions of such devices are below the optical wavelength and their fabrication andphysical characterization are still somewhat inconvenient or expensive. Here I shall describe our study in terahertz wave plasmonics where the devices under study have dimensions that are many times that of the optical wavelength so that fabrication and physical characterization are quite straight forward and convenient. To study their plasmonic properties, we built a time domain terahertz spectroscopy system and have used it to study some simple structures made on polyimide. I shall report the terahertz wave properties of those structures and compare them with simulations. We hope to gain a more thorough understanding of plasmonics through the study in the terahertz wave regime.