Hybrid surface-enhanced Raman scattering substrate from gold nanoparticle and photonic crystal: maneuverability and uniformity of Raman spectra.
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.
Wu
Cheng Yi
CY
Department of Physics, National Chung Cheng University, Ming Hsiung, Chia Yi, Taiwan.
Huang
Chia Chi
CC
Jhang
Jia Sin
JS
Liu
An Chi
AC
Chiang
Chun-Chen
CC
Hsieh
Ming-Lung
ML
Huang
Ping-Ji
PJ
Tuyen
Le Dac
le D
Minh
Le Quoc
le Q
Yang
Tzyy Schiuan
TS
Chau
Lai-Kwan
LK
Kan
Hung-Chih
HC
Hsu
Chia Chen
CC
D015374:Biosensing Techniques; D003460:Crystallization; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles; D008855:Microscopy, Electron, Scanning; D008956:Models, Chemical; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods; D055095:Optics and Photonics; D017785:Photons; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013499:Surface Properties
D006046:Gold