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Hybrid surface-enhanced Raman scattering substrate from gold nanoparticle and photonic crystal: maneuverability and
Cheng Yi Wu1, Chia Chi Huang, Jia Sin Jhang
1Department of Physics, National Chung Cheng University, Ming Hsiung, Chia Yi, Taiwan.
Abstract:
A novel hybrid surface-enhanced Raman scattering (SERS) substrate based on Au nanoparticles decorated inverse opal (IO) photonic crystal (PhC) is presented. In addition to the enhancement contributed from Au nanoparticles, a desired Raman signal can be selectively further enhanced by appropriately overlapping the center of photonic bandgap of the IO PhC with the wavelength of the Raman signal. Furthermore, the lattice structure of the IO PhC provides excellent control of the distribution of Au nanoparticles to produce SERS spectra with high uniformity. The new design of SERS substrate provides extra maneuverability for ultra-high sensitivity sensor applications.
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