Kim Ju-Hyun, Kang Taejoon, Yoo Seung Min, Lee Sang Yup, Kim Bongsoo, Choi Yang-Kyu
Division of Electrical Engineering, School of Electrical Engineering and Computer Science, KAIST, Daejeon 305-701, Korea.
Nanotechnology. 2009 Jun 10;20(23):235302. doi: 10.1088/0957-4484/20/23/235302. Epub 2009 May 18.
A controllable flower-like Au nanostructure array for surface-enhanced Raman scattering (SERS) was fabricated using the combined technique of the top-down approach of conventional photolithography and the bottom-up approach of electrodeposition. Au nanostructures with a mean roughness ranging from 5.1 to 49.6 nm were obtained by adjusting electrodeposition time from 2 to 60 min. The rougher Au nanostructure provides higher SERS enhancement, while the highest SERS intensity obtained with the Au nanostructure is 29 times stronger than the lowest intensity. The SERS spectra of brilliant cresyl blue (BCB), benzenethiol (BT), adenine and DNA were observed from the Au nanostructure.
采用传统光刻自上而下方法与电沉积自下而上方法相结合的技术，制备了一种用于表面增强拉曼散射（SERS）的可控花状金纳米结构阵列。通过将电沉积时间从2分钟调整到60分钟，获得了平均粗糙度在5.1至49.6纳米范围内的金纳米结构。粗糙度更高的金纳米结构提供更高的SERS增强效果，而用该金纳米结构获得的最高SERS强度比最低强度强29倍。从该金纳米结构中观察到了灿烂甲酚蓝（BCB）、苯硫酚（BT）、腺嘌呤和DNA的SERS光谱。
