Research on Ultrasensitive Detecting Method Based on Surface Enhanced Raman Scattering Effect

DOI

10.2991/jimec-17.2017.121How to use a DOI?

Keywords

SERS; silver nanoprisms; aggregation; 633 nm laser.

Abstract

Surface enhanced Raman scattering (SERS) spectroscopy has been reported as an ultrasensitive detecting method. Adding salts is a main way to induce nanoparticles aggregation to obtain giant enhancement of Raman signal. However, this method needs more procedures and the adding salts may interfere the detection reaction. Here an effective and simple method is reported to enhance SERS effect of the aggregation of silver nanoparticles (Ag NPs) induced by the laser of 633 nm. Ag NPs were prepared by plasmon-mediated method. Surface plasmon band of Ag NPs is ~ 635 nm which could effectively absorb the 633 nm laser energy. When laser irradiating Ag NPs during the detection of Raman spectra, these Ag NPs gradually aggregated and SERS spectra of analytes (4-mercaptobenzoic acid, 4-MBA) were gradually enhanced. And enhancement factor of Raman spectra ~109 is obtained by this method. Due to the huge magnitude of SERS in the near infrared region (excitation wavelength 633 nm), this technique has the potential application in the field of biochemical tests.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jia Liu
AU  - Yi Xu
AU  - Changjun Zhao
AU  - Zhenqiong Lin
PY  - 2017/10
DA  - 2017/10
TI  - Research on Ultrasensitive Detecting Method Based on Surface Enhanced Raman Scattering Effect
BT  - Proceedings of the 2017 2nd Joint International Information Technology, Mechanical and Electronic Engineering Conference (JIMEC 2017)
PB  - Atlantis Press
SP  - 558
EP  - 561
SN  - 2352-538X
UR  - https://doi.org/10.2991/jimec-17.2017.121
DO  - 10.2991/jimec-17.2017.121
ID  - Liu2017/10
ER  -