Vertical silver nanorod growth as a surface-enhanced Raman scattering

NoSoung Myoung; Jung Su Park; Yong-Suk Shin; Chang-Lyoul Lee; Sang-Youp Yim

doi:10.1117/12.2078603

12 March 2015 Vertical silver nanorod growth as a surface-enhanced Raman scattering

NoSoung Myoung, Jung Su Park, Yong-Suk Shin, Chang-Lyoul Lee, Sang-Youp Yim

Proceedings Volume 9352, Synthesis and Photonics of Nanoscale Materials XII; 93520O (2015) https://doi.org/10.1117/12.2078603
Event: SPIE LASE, 2015, San Francisco, California, United States

Abstract

We report an optimization of the fabrication method on arrays of vertically grown nanometer scaled silver rod using nanosphere (polystyrene) lift-off on SiO₂ wafer as a surface-enhance Raman scattering substrate by thermal evaporation technology as well as real-time vapor phase detection of CHCl₃ by the radiation of fiber optic coupled 785 nm diode laser. Raman peak at 668.2 cm^-1 for CHCl₃(C-H stretching band) was compared to the peak at 1088.4 cm^-1 of 1- propanethiol (CH₃ rock band) and the detection limit of CHCl₃ vapor phase contamination level was estimated as a function of the peak intensity ratio of 668.2 vs. 1088.4. The detectable range using Ag nanorod wells on SiO₂ substrate was 20-800 ppm. We were able to make significant steps toward developing cost effective nano-pattern as a Raman sensor.

Citation Download Citation

NoSoung Myoung, Jung Su Park, Yong-Suk Shin, Chang-Lyoul Lee, and Sang-Youp Yim "Vertical silver nanorod growth as a surface-enhanced Raman scattering", Proc. SPIE 9352, Synthesis and Photonics of Nanoscale Materials XII, 93520O (12 March 2015); https://doi.org/10.1117/12.2078603

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