Biosensors Based on Plasmonics
- Corresponding Author:
- Guo Z
School of Computer and Information
Hefei University of Technology
Hefei, 230009, China
Tel: 86 551 6290 10
Received Date: July 30, 2015; Accepted Date: August 28, 2015; Published Date: August 31, 2015
Citation: Ge C, Tao Y, Guo Z (2015) Biosensors Based on Plasmonics. Biosens J 4:123. doi:10.4172/2090-4967.1000123
Copyright: © 2015 Ge C, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Because of the sensitivity to refractive index changes, plasmonics nanostructures have been investigated broadly for the bio-molecules detection through the excitations of the propagating surface plasmon resonance (PSPR) or localized surface plasmon resonance (LSPR). PSPR sensors can detect sub-monolayer quantities of bio-molecules at the gold film surface and provide real-time data through continuous optical measurements. LSPR sensors could be more sensitive to local refractive index changes and the factors of nanoparticle material, shape and size are all interrelated and contribute to the refractive index sensitivities.