An easy produced optical fiber SERS sensor

Surface Enhanced Raman Scattering (SERS) is typically observed with the substrate in a liquid medium and it has been proposed as a promising technique for detecting low levels of pollutants in liquids. The design and fabrication of an optical fibre SERS sensor based on Au nanoparticles (Au-NPs), which is self-assembly immobilized onto the end surface of an optical fibre is described. Two toxic materials, Rhodamine 6G (R6G) and crystal violet were analysed using this optical fibre SERS sensor combined with portable Raman spectrometer. Our proposed fabrication and analytical method offers a rapid, cheap and disposable trace detection capability for toxic materials in the field.

[1]  M. Fleischmann,et al.  Raman spectra of pyridine adsorbed at a silver electrode , 1974 .

[2]  Meikun Fan,et al.  Silver nanoparticles self assembly as SERS substrates with near single molecule detection limit. , 2009, Physical chemistry chemical physics : PCCP.

[3]  D. L. Jeanmaire,et al.  Surface raman spectroelectrochemistry: Part I. Heterocyclic, aromatic, and aliphatic amines adsorbed on the anodized silver electrode , 1977 .

[4]  Changxi Yang,et al.  Combined taper-and-cylinder optical fiber probes for highly sensitive surface-enhanced Raman scattering , 2014 .

[5]  Yi Zhang,et al.  Surface-enhanced Raman scattering sensor based on D-shaped fiber , 2005 .

[6]  Alexandre G. Brolo,et al.  Nanohole-Enhanced Raman Scattering , 2004 .

[7]  Alexander Argyros,et al.  Surface enhanced Raman scattering in a hollow core microstructured optical fiber. , 2007, Optics express.

[8]  K. Kavanagh,et al.  A new generation of sensors based on extraordinary optical transmission. , 2008, Accounts of chemical research.

[9]  N. Pieczonka,et al.  Inherent complexities of trace detection by surface-enhanced Raman scattering. , 2005, Chemphyschem : a European journal of chemical physics and physical chemistry.

[10]  Wenbing Li,et al.  SERS-Active Silver Nanoparticles Prepared by a Simple and Green Method , 2010 .

[11]  C. Gu,et al.  Novel index-guided photonic crystal fiber surface-enhanced Raman scattering probe. , 2008, Optics express.

[12]  R. Dasari,et al.  Single Molecule Detection Using Surface-Enhanced Raman Scattering (SERS) , 1997 .