scholarly journals Hollow-Core Photonic Crystal Fibers for Surface-Enhanced Raman Scattering Probes

2011 ◽  
Vol 2011 ◽  
pp. 1-11 ◽  
Author(s):  
Xuan Yang ◽  
Chao Shi ◽  
Rebecca Newhouse ◽  
Jin Z. Zhang ◽  
Claire Gu
Keyword(s):  
Photonic Crystal ◽  
Raman Scattering ◽  
Photonic Crystal Fibers ◽  
High Sensitivity ◽  
Surface Enhanced Raman Scattering ◽  
Hollow Core ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Crystal Fibers

Photonic crystal fiber (PCF) sensors based on surface-enhanced Raman scattering (SERS) have become increasingly attractive in chemical and biological detections due to the molecular specificity, high sensitivity, and flexibility. In this paper, we review the development of PCF SERS sensors with emphasis on our recent work on SERS sensors utilizing hollow-core photonic crystal fibers (HCPCFs). Specifically, we discuss and compare various HCPCF SERS sensors, including the liquid-filled HCPCF and liquid-core photonic crystal fibers (LCPCFs). We experimentally demonstrate and theoretically analyze the high sensitivity of the HCPCF SERS sensors. Various molecules including Rhodamine B, Rhodamine 6G, human insulin, and tryptophan have been tested to show the excellent performance of these fiber sensors.

Towards Full-Length Accumulative Surface-Enhanced Raman Scattering-Active Photonic Crystal Fibers

2010 ◽  
Vol 22 (24) ◽  
pp. 2647-2651 ◽  
Author(s):  
Yun Han ◽  
Siliu Tan ◽  
Maung Kyaw Khaing Oo ◽  
Denis Pristinski ◽  
Svetlana Sukhishvili ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Raman Scattering ◽  
Photonic Crystal Fibers ◽  
Surface Enhanced Raman Scattering ◽  
Full Length ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Crystal Fibers

scholarly journals Detection of Organic Substances by a SERS Method Using a Special Ag-Poly(Chloro-P-Xylylene)-Ag Sandwich Substrate

Coatings ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 799
Author(s):  
Irina Boginskaya ◽  
Aliia Gainutdinova ◽  
Alexey Gusev ◽  
Karen Mailyan ◽  
Anton Mikhailitsyn ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Sandwich Structures ◽  
Control Sample ◽  
Film Surface ◽  
High Sensitivity ◽  
Surface Enhanced Raman Scattering ◽  
Silver Layer ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Spectroscopy based on surface enhanced Raman scattering (SERS) is widely used as a method with extremely high sensitivity for molecular and chemical analysis. We have developed thin-film sandwich structures, in which, when used as sensitive elements for detecting organic compounds at low concentrations, high-amplitude spectra of surface enhanced Raman scattering are observed. Using gas-phase cryochemical synthesis and thermal sputtering in vacuum, SERS active sandwich structures Ag–poly(chloro-p-xylylene)–Ag (Ag–PCPX–Ag) were obtained. In the process of creating sandwich structures, the upper silver film takes the form of a complex island topology with submicron sizes. A series of samples were made with different thicknesses of the polymer and upper silver layers. SERS spectra of the analyte chemically adsorbed on the film surface were obtained, demonstrating a significant amplification (up to 104) compared with the control sample. The dependence of the gain on the silver concentration is characterized by a maximum polymer layer thickness of 600 nm and a 30 nm thick upper silver layer. A selective amplification of the low molecular weight compound spectra with respect to proteins was observed. A semi-empirical model is proposed that is in good agreement with the experimental results.

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