http://scholars.ntou.edu.tw/handle/123456789/1834
標題: | Controlling SERS intensity by tuning the size and height of a silver nanoparticle array | 作者: | Wen-Chi Lin Shi-Hwa Huang Chang-Long Chen Chih-Chia Chen Din Ping Tsai Hai-Pang Chiang |
公開日期: | 十月-2010 | 出版社: | Springer Nature | 卷: | 101 | 期: | 1 | 起(迄)頁: | 185–189 | 來源出版物: | Applied Physics A-Materials Science & Processing | 摘要: | It is demonstrated that the surface-enhanced Raman scattering (SERS) intensity of R6G molecules adsorbed on a Ag nanoparticle array can be controlled by tuning the size and height of the nanoparticles. A firm Ag nanoparticle array was fabricated on glass substrate by using nanosphere lithography (NSL) combined with reactive ion etching (RIE). Different sizes of Ag nanoparticles were fabricated with seed polystyrene nanospheres ranging from 430 nm to 820 nm in diameter. By depositing different thicknesses of Ag film and lifting off nanospheres from the surface of the substrate, the height of the Ag nanoparticles can be tuned. It is observed that the SERS enhancement factor will increase when the size of the Ag nanoparticles decreases and the deposition thickness of the Ag film increases. An enhancement factor as high as 2×106 can be achieved when the size of the polystyrene nanospheres is 430 nm in diameter and the height of the Ag nanoparticles is 96 nm. By using a confocal Raman mapping technique, we also demonstrate that the intensity of Raman scattering is enhanced due to the local surface plasmon resonance (LSPR) occurring in the Ag nanoparticle array. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/1834 | ISSN: | 0947-8396 | DOI: | 10.1007/s00339-010-5777-y |
顯示於: | 光電與材料科技學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。