9 October 2012 Huge SERS enhancement via ZnO nanowires on gold nanoislands
Author Affiliations +
Abstract
We experimentally investigated Zinc oxide (ZnO) nanowires (NWs) on flat Si substrate and ZnO NWs on Au nanoislands attached on a Si substrate via hydrothermal technique, pursuing surface enhanced Raman scattering (SERS). Au nanoislands were formed by thermal annealing of a Au thin film deposited on Si substrate. ZnO NWs were then grown on two types of substrates (with and without Au nanoislands) and thermally annealed together. During the thermal annealing process, the ZnO NWs were coupled to Au nanoislands. After the thermal annealing, strong SERS enhancement was observed of ZnO NWs on Au nanoislands. Over 30 times enhancement in SERS was found when the initial Au layer thickness was 40 nm.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mohammad Tariq Yaseen, Mohammad Tariq Yaseen, R. Thangavel, R. Thangavel, Rakesh S. Moirangthem, Rakesh S. Moirangthem, Yia-Chung Chang, Yia-Chung Chang, } "Huge SERS enhancement via ZnO nanowires on gold nanoislands", Proc. SPIE 8457, Plasmonics: Metallic Nanostructures and Their Optical Properties X, 84572D (9 October 2012); doi: 10.1117/12.929396; https://doi.org/10.1117/12.929396
PROCEEDINGS
5 PAGES


SHARE
Back to Top