Optical Studies of Au-based Meta-materials on Nano-scale

• Main Authors: Min-chen Wu, 吳旻蓁
• Other Authors: Wei-xi Ni
• Format: Others
• Language: en_US
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/39492414367168751846

碩士 === 國立交通大學 === 電子工程系所 === 96 === Meta-materials are periodic metal structures exhibiting plasmonic resonance, artificial magnetism, and/or left-handed behaviors, which correspond to negative values of permittivity (ε), permeability (μ), and consequent refraction index (n), when electromagnetic (EM) waves propagate in these patterned arrays at a certain range of wavelengths. By using e-beam lithography and lift-off technique, three types of gold ring resonators with line width 120-360 nm were fabricated on glass. The area of the patterned array was about 90 90μm2. Fourier transfer infrared spectroscopy (FTIR) measurements were engaged for the study of optical properties of these meta-material structures. The properties of the electric resonance, such as scaling, were observed. The influence of the orientation of the ring resonators with respect to the incident electric field on the reflection spectra were also compared among different ring resonator structures.