Design of Gaussian-Shaped and Double Sides Flanked Metallic Nano-Grating Surface Plasma Resonance Biosensors

Author

Li, Haiying ; Zhang, Zhidong ; Luo, Xiangang ; Xunan Chen

Author_Institution

Sch. of Sci., Hebei Univ. of Technol., Tianjin, China

fYear

2010

fDate

19-21 June 2010

Firstpage

1

Lastpage

4

Abstract

In this paper, a new type of gaussian-shaped metallic nano-grating surface plasma resonance (NGSPR) biosensors and the design optimization process are presented in nano fabrication point of view. The influence of structural factors of nano- corrugations on the sensitivity of NGSPR sensors was investigated using the multiple multipole program (MMP) method. Biosensors with the line width of the gaussion profile about 50nm and the depth of the gaussion profile about 30nm show narrow and deep reflection peaks .The wavelength of the resonance reflection can be customized by adjusting the grating period. We predict that a high refractive idex sensitivity about 420nm/RIU can be obtained using our optimized structure. Sharp reflection resonance peaks with the full-width at half-maximum (FWHM) of 6nm will further increase the figure of merit (FOM) of the sensor. These reflection properties make it possible to be used as NGSPR biosensors.

Keywords

Gaussian distribution; nanobiotechnology; nanofabrication; nanophotonics; nanosensors; optical sensors; reflectivity; refractive index; surface plasmon resonance; FOM; FWHM; MMP; NGSPR sensor; biosensor; double side flanked metallic nanograting surface plasma resonance; figure of merit; full-width at half-maximum; gaussian-shaped metallic nanograting surface plasma resonance; gaussion profile; grating period; line width; multiple multipole program; nanocorrugation; nanofabrication; reflection properties; reflection resonance peak; refractive idex sensitivity; structural factors; Biomedical optical imaging; Biosensors; Gaussian processes; Optical films; Optical reflection; Optical refraction; Optical sensors; Optical surface waves; Plasmas; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics and Optoelectronic (SOPO), 2010 Symposium on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-4963-7

Electronic_ISBN

978-1-4244-4964-4

Type

conf

DOI

10.1109/SOPO.2010.5504056

Filename

5504056