Nanoscale biosensor chip

Author

Koppa, Santosh ; Joo, Youngjoong ; Venkataramasubramani, Meenakshi ; Tang, Liang

Author_Institution

Dept. of Electr. & Comput. Eng., UTSA, San Antonio, TX, USA

fYear

2010

Firstpage

268

Lastpage

271

Abstract

In this report, we demonstrate a nanoscale biosensor required for in field and fast detection. This sensor utilizes the Surface Plasmon Resonance (SPR) property of the gold nanorods of aspect ratio 5 to amplify the bio detection whose response is captured by three different photodiodes fabricated by the TSMC 0.18μm. Pinned photodiode yielded 176% and 80% higher response current than N+ diffusion/ P substrate (N+/psub) and N well/P substrate (NW/psub) diodes respectively. However NW/psub diode exhibited 1.5 and 6.7 times more sensitivity to 20nm shift in gold nanorod spectrum when compared to pinned and N+/psub diodes respectively.

Keywords

biosensors; gold; nanobiotechnology; nanorods; photodiodes; surface plasmon resonance; TSMC; bio detection; gold nanorods; in field detection; nanoscale biosensor chip; photodiodes; pinned photodiode; surface plasmon resonance; Absorption; Biosensors; Diodes; Gold; Integrated circuit synthesis; Optical sensors; Photodiodes; Signal synthesis; Signal to noise ratio; Substrates; Gold nanorod; SPR; biosensor; photodiode;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (MWSCAS), 2010 53rd IEEE International Midwest Symposium on

Conference_Location

Seattle, WA

ISSN

1548-3746

Print_ISBN

978-1-4244-7771-5

Type

conf

DOI

10.1109/MWSCAS.2010.5548781

Filename

5548781