Enhancement of the resolution of surface plasmon resonance biosensors by control of the size and distribution of nanoparticles
- 15 June 2004
- journal article
- research article
- Published by Optica Publishing Group in Optics Letters
- Vol. 29 (12), 1390-1392
- https://doi.org/10.1364/ol.29.001390
Abstract
A new resolution-enhanced surface plasmon resonance (SPR) biosensor offers a tenfold improvement in resolution compared with conventional SPR biosensors in the detection of the surface coverage of biomaterials. The proposed optical biosensor, based on the attenuated total-reflection method, excites both the surface plasmons and particle plasmons to enhance the local electromagnetic field by control of the size and volume fraction of embedded Au nanoparticles to increase the resolution of the device. The SPR biosensor design is based on the Maxwell-Garnett model and the Fresnel equations, and the device is fabricated with a cosputtering deposition system.Keywords
This publication has 10 references indexed in Scilit:
- Modeling the optical response of nanoparticle-based surface plasmon resonance sensorsSensors and Actuators B: Chemical, 2002
- Transmission Surface-Plasmon Resonance (T-SPR) Measurements for Monitoring Adsorption on Ultrathin Gold Island FilmsChemistry – A European Journal, 2002
- Gold nanoparticle thin filmsColloids and Surfaces A: Physicochemical and Engineering Aspects, 2002
- Investigating the kinetics of DNA–DNA and PNA–DNA interactions using surface plasmon resonance-enhanced fluorescence spectroscopyBiosensors and Bioelectronics, 2001
- A surface plasmon resonance array biosensor based on spectroscopic imagingBiosensors and Bioelectronics, 2001
- Surface plasmon resonance sensors: reviewSensors and Actuators B: Chemical, 1999
- Optimum massthickness of Ag-nanoparticle film for surface enhanced Raman scatteringMaterials Science and Engineering B, 1998
- Modelling of particle-enhanced sensitivity of the surface-plasmon-resonance biosensorSensors and Actuators B: Chemical, 1994
- Surface plasmon resonance for gas detection and biosensingSensors and Actuators, 1983
- XII. Colours in metal glasses and in metallic filmsPhilosophical Transactions of the Royal Society A, 1904