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Semiconductor Nanostructure-Based Field Effect Transistors for Biosensing Applications

Title: Semiconductor Nanostructure-Based Field Effect Transistors for Biosensing Applications.
Name(s): Hazel, Anthony, author
Department of Physics
Type of Resource: text
Genre: Text
Issuance: serial
Date Issued: 2012
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Semiconductor nanostructures have shown great potential for detecting and measuring chemical and biological interactions. The advantage of the electrically based schemes is real-time, label-free detection, which had been absent from methods which involved chemical and/or optical markers such as fluorescent labels. The most common technique is the utilization of single nanowire-based field-effect transistors (FETs), where the nanowire acts as the semiconducting channel. As biomolecules interact with nanowire via chemisorption, the charge of the biomolecule supplies a local electric field that will affect the current through the wire. This project will focus on the use of tin dioxide (SnO2) nanobelt-based FETs and testing the viability of an extended gate design. The extended gate – a gold contact pad functionalized with a 16-mercaptohexadecanoic acid (MHA) self-assemble monolayer (SAM) – will be functionalized instead of the nanobelt, which will be isolated via an oxide dielectric layer. Since MHA has an isoelectric point of 4.3, pH tests will determine if an appreciable signal can be obtained with the extended gate design.
Identifier: FSU_migr_uhm-0115 (IID)
Keywords: FET, Biosensing, Nanotechnology
Submitted Note: A Thesis submitted to the Department of Physics in partial fulfillment of the requirements for the degree Honors in the Major.
Degree Awarded: Summer Semester, 2012.
Date of Defense: August 2, 2012.
Subject(s): Biophysics
Chemistry, Physical and theoretical
Condensed matter
Persistent Link to This Record:
Owner Institution: FSU
Is Part of Series: Honors Theses.

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Hazel, A. (2012). Semiconductor Nanostructure-Based Field Effect Transistors for Biosensing Applications. Retrieved from