Highly efficient potentiometric glucose biosensor based on functionalized InN quantum dots

Alvi, Naveed ul Hassan and Soto Rodríguez, Paul and Gómez Hernández, Víctor Jesús and Kumar, Praveen and Amin, G. and Nur, O. and Willander, Magnus and Nötzel, R. (2012). Highly efficient potentiometric glucose biosensor based on functionalized InN quantum dots. "Applied Physics Letters", v. 101 (n. 15); p. 153110. ISSN 0003-6951. https://doi.org/10.1063/1.4758701.

Description

Title: Highly efficient potentiometric glucose biosensor based on functionalized InN quantum dots
Author/s:
  • Alvi, Naveed ul Hassan
  • Soto Rodríguez, Paul
  • Gómez Hernández, Víctor Jesús
  • Kumar, Praveen
  • Amin, G.
  • Nur, O.
  • Willander, Magnus
  • Nötzel, R.
Item Type: Article
Título de Revista/Publicación: Applied Physics Letters
Date: October 2012
ISSN: 0003-6951
Volume: 101
Subjects:
Freetext Keywords: biochemistry, biosensors, blood, electrochemical sensors, enzymes, III-V semiconductors, indium compounds, molecular beam epitaxial growth, molecular biophysics, nanofabrication, patient diagnosis, potentiometers, semiconductor quantum dots, wide band gap semiconductors
Faculty: Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM) (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

We present a fast, highly sensitive, and efficient potentiometric glucose biosensor based on functionalized InN quantum-dots (QDs). The InN QDs are grown by molecular beam epitaxy. The InN QDs are bio-chemically functionalized through physical adsorption of glucose oxidase (GOD). GOD enzyme-coated InN QDs based biosensor exhibits excellent linear glucose concentration dependent electrochemical response against an Ag/AgCl reference electrode over a wide logarithmic glucose concentration range (1 × 10−5 M to 1 × 10−2 M) with a high sensitivity of 80 mV/decade. It exhibits a fast response time of less than 2 s with good stability and reusability and shows negligible response to common interferents such as ascorbic acid and uric acid. The fabricated biosensor has full potential to be an attractive candidate for blood sugar concentration detection in clinical diagnoses.

More information

Item ID: 15751
DC Identifier: http://oa.upm.es/15751/
OAI Identifier: oai:oa.upm.es:15751
DOI: 10.1063/1.4758701
Official URL: http://apl.aip.org/resource/1/applab/v101/i15/p153110_s1
Deposited by: Memoria Investigacion
Deposited on: 27 Jul 2013 08:49
Last Modified: 21 Apr 2016 16:03
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