Physics and Astronomy Publications
Document Type
Article
Publication Date
2013
Journal
Sensors and Actuators A: Physical
Volume
189
Issue
15
First Page
474
Last Page
480
URL with Digital Object Identifier
https://doi.org/10.1016/j.sna.2012.08.041
Abstract
We present a biosensor based on periodic arrays of gold nanodisks patterned on top of a glass substrate. The sensor’s resonance wavelength, peak linewidth and figure of merit were studied both in experiments and in simulations. We analyzed the dependence of the sensor’s resolution on the inherent figure of merit of the sensor structure and the signal to noise ratio of the detection system. The best achieved refractive index resolution is 1.5×10-4 RIU and the detection limit on and antigen-antibody binding is better than 1 ng/mL.
