The design and simulation of resonant plasmon nanoantennas

• Main Authors: YU-XING WU, 吳育欣
• Other Authors: YAW-DONG WU
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/54963748524105347256

碩士 === 國立高雄應用科技大學 === 電子工程系 === 99 === In this thesis, we discussed the properties and parameter of grating arms. By adjusting properties of grating arms and using finite-difference time-domain method (FDTD), the the visible-multiple-wavelength plasmonic nanoantenna arrays and the double-wavelength single-focal-point plasmonic nanoantennas have been proposed. Firstly, we design visible multiple-wavelength multiple-focal nanoantenna array operated in visible spectrum by adjusting parameters of grating rods. The numerical results show that the multiple-focal nanoantenna array can focus light waves in seven focal points at seven visible wavelengths, the electric field intensity enhancement is at least 600 in each arrays. Finally, we proposed the double wavelength single-focal plasmonic nanoantennas resonating at the blue light and the red light wavelengths simultaneously by arranging the straight and the oblique grating arms. The numerical results show that the single-focal point plasmonic nanoantenna can focus light waves in the same focal point resonating at the blue light and the red light wavelengths simultaneously，the electric field intensity enhancement is at least 800. In the future, these plasmonic nanoantennas would be the potential key components in the applications of optical manipulation, fluorescence enhancement, multi-spectral single-molecule spectroscopy in biosensor and molecule detections.