Rapid Prototyping of a Low-cost Graphene-based Impedimetric Biosensor

Sinziana Popescu, Carl Dale, Neil Keegan, Biswajit Ghosh, Richard Kaner, John Hedley

Research output: Contribution to journalArticle

Abstract

This paper presents a preliminary investigation towards rapid prototyping of a low-cost biosensor based on reduced graphene oxide (rGO). The devices are fabricated via a laser scribing process and their functionality is demonstrated by their functionalization and subsequent immobilization of 7% bovine serum albumin (BSA). Non-faradaic electrochemical impedance spectroscopy (EIS) indicated a 33-42% decrease in impedance upon immobilization. An electroless nickel deposition process is demonstrated to enable electrical contacts to the device, with optimized plating conditions (pH, temperature) leading to a rGO-nickel contact resistance of 19 Ω/mm2.
LanguageEnglish
Pages274-276
JournalProcedia Technology
Volume27
Early online date13 Jul 2017
DOIs
Publication statusPublished - 13 Jul 2017

Fingerprint

Graphite
Rapid prototyping
Biosensors
Contact resistance
Bovine Serum Albumin
Nickel
Electrochemical impedance spectroscopy
Plating
Oxides
Costs
Lasers
Temperature
nickel monoxide

Bibliographical note

© 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.

Keywords

  • graphene
  • reduced graphene oxide
  • impedimetric biosensor
  • interdigitated electrode array
  • electroless nickel deposition

Cite this

Popescu, Sinziana ; Dale, Carl ; Keegan, Neil ; Ghosh, Biswajit ; Kaner, Richard ; Hedley, John. / Rapid Prototyping of a Low-cost Graphene-based Impedimetric Biosensor. In: Procedia Technology. 2017 ; Vol. 27. pp. 274-276.
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Rapid Prototyping of a Low-cost Graphene-based Impedimetric Biosensor. / Popescu, Sinziana; Dale, Carl; Keegan, Neil; Ghosh, Biswajit; Kaner, Richard; Hedley, John.

In: Procedia Technology, Vol. 27, 13.07.2017, p. 274-276.

Research output: Contribution to journalArticle

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