Research Papers

Analysis of sensing performance of Gaussian-shaped metallic nanogratings

[+] Author Affiliations
Haiying Li, Xiangang Luo, Chunlei Du, Xunan Chen, Yongqi Fu

State Key Lab. of Optical Technology for Microfabrication, Institue of Optics and Electronics, Chinese Academy of Sciences, Shuangliu, P.O. Box 350, Chengdu, Sichuan 610209 China

J. Nanophoton. 2(1), 023508 (August 1, 2008). doi:10.1117/1.2973901
History: Received March 22, 2008; Revised July 27, 2008; Accepted July 28, 2008; August 1, 2008; Online August 01, 2008
Text Size: A A A

Abstract

A new type of structure which is composed of a Gaussian profile-shaped metallic nanograting, was put forth from the nanofabrication point of view. Dependence of the structural parameters on the sensitivity was analyzed by means of a multiple multipole program (MMP) method. One of the important applications of the nanograting is in biosensing: immunoassay. Our numerical simulation results showed that the sensitivity to refractive index of 490 nm/RIU and the reflection spectra at site of full-width at halfmaximum (FWHM) ~9 nm can be obtained through the optimized structure. The figure of merit (FOM) of the sensor can exceed 55. The resonant wavelength increases linearly with increasing of the refractive index of bio-samples. These reflection properties make the nanograting more suitable to be used in the localized surface plasma resonance (LSPR)-based biosensors for immunoassay.

© 2008 Society of Photo-Optical Instrumentation Engineers

Citation

Haiying Li ; Xiangang Luo ; Chunlei Du ; Xunan Chen and Yongqi Fu
"Analysis of sensing performance of Gaussian-shaped metallic nanogratings", J. Nanophoton. 2(1), 023508 (August 1, 2008). ; http://dx.doi.org/10.1117/1.2973901


Figures

Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.