bullet Sensors & Transducers Journal

    (ISSN 1726- 5479)

156.504

2007 e-Impact Factor

25 Top Downloaded Articles

Journal Subscription 2008

Editorial Calendar 2008

Submit an Article

Editorial Board

Current Issue

Sensors & Transducers journal's cover

 

Sensors & Transducers Journal 2007

2000-2002 S&T e-Digest Contents

2003 S&T e-Digest Contents

2004 S&T e-Digest Contents

2005 S&T e-Digest Contents

2006 S&T e-Digest Contents

 

Best Articles 2007

 

 

 

Vol. 91, Issue 4, April 2008, pp.24-30

 

 

Bullet

Cantilever Embedded MOSFET Characteristics for Detection of Photosystem I Reaction Centers

 

Sazia A. Eliza1, Ida Lee2, Syed K. Islam1, and Elias Greenbaum2

1Department of Electrical and Computer Engineering, The University of Tennessee, Knoxville,

TN 37996-2100, USA

2Oak Ridge National Laboratory, Oak Ridge, TN 37831-6194, USA

E-mail: seliza@utk.edu, leei@ornl.gov

 

 

Received: 11 December 2007   /Accepted: 21 April 2008   /Published: 30 April 2008

 

Abstract: This paper presents a micro sensor for detection and characterization of biomolecular photodiodes - Photosystem I (PS I) reaction centers. In oxygenic plants, photons are captured with high quantum efficiency by two specialized reaction centers, Photosystems I and II (PS I and PS II). Photon capture triggers rapid charge separation and the conversion of light energy into an electric voltage across the nanometer-scale (~6 nm) reaction centers.  In this work, MOSFET embedded micro cantilevers have been used to detect the energy harvesting biomolecules. The bending of cantilevers due to immobilization of reaction centers induces stress on MOSFET gate and hence modulates the MOSFET current voltage characteristics. Again, the optoelectrical property of PS I alter the electrostatic properties of the MOS gate, which reflects in the transport characteristics of the transistor.

 

Keywords: Cantilever embedded MOS, Photosystem I, biomolecular, photodiode

 

 Acrobat reader logo Click <here> or title of paper to download the full pages article (561 K)

 

 

 

 


1999 - 2008 Copyright , International Frequency Sensor Association (IFSA). All Rights Reserved.


Home - News - Links - Archives - Tools - Standardization - Patents - Marketplace - Projects - Wish List - Subscribe - Search - e-Shop - Membership

 Members Area -Sensors Portal -Training Courses - S&T Digest - For advertisers - Bookstore - Forums - Polls - Sensor Jobs - Site Map