Two scientific articles on graphene-based sensors prove popular in the research community

Mar 28, 2012

When it comes to checking for trace levels of chemicals that could be the early warning signs of disease or chemical exposure, doctors and patients want to use as small of blood samples as possible. This drive for small samples is spurring the scientific community to examine graphene: durable, conductive, and easy-to-tailor two-dimensional carbon sheets. Two articles on graphene biosensors by scientists at Pacific Northwest National Laboratory and Princeton University have proven quite popular. The articles are being regularly accessed online and are amassing citations.

The first article is on creating a glucose detector by combining graphene with a glucose-sensing enzyme and chitosan. Because graphene has a high surface-to-volume ratio and excellent electron conductivity, the researchers immobilized enzymes in graphene/chitosan nanocomposite film and demonstrated the excellent sensitivity and stability for measuring glucose. This article, in in 2009, has been cited 128 times, and is in the list of most-cite articles of the journal.

In another popular article, the authors reviewed graphene-based sensors. They covered the , including how electrons move between the graphene electrode and the enzyme without mediators. They also discuss graphene-based electrodes for detecting dopamine and other biomolecules for industrial and clinical uses. Scientists have cited the paper 123 times, and it was the second most accessed article in Wiley's Electroanalysis in February 2012.

Explore further: Thinnest feasible nano-membrane produced

More information: Shao Y, J et al.  2010.  "Graphene Based Electrochemical Sensors and Biosensors: A Review."  Electroanalysis 22(10):1027-1036.  doi:10.1002/elan.200900571

Kang X, et al.  2009.  "Glucose Oxidase-Graphene-Chitosan Modified Electrode for Direct Electrochemistry and Glucose Sensing."  Biosensors and Bioelectronics 25(4):901-905.  doi:10.1016/j.bios.2009.09.004

add to favorites email to friend print save as pdf

Related Stories

Flaky graphene makes reliable chemical sensors

Jan 17, 2012

Scientists from the University of Illinois at Urbana-Champaign and the company Dioxide Materials have demonstrated that randomly stacked graphene flakes can make an effective chemical sensor.

Seeing an atomic thickness

May 19, 2011

Scientists from NPL, in collaboration with Linkoping University, Sweden, have shown that regions of graphene of different thickness can be easily identified in ambient conditions using Electrostatic Force ...

Scientists produce graphene using microorganisms

Mar 22, 2012

The Graphene Research Group at Toyohashi University of Technology (Japan) reports on the synthesis of graphene by reducing graphene oxide using microorganisms extracted from a local river.

Recommended for you

Thinnest feasible nano-membrane produced

Apr 17, 2014

A new nano-membrane made out of the 'super material' graphene is extremely light and breathable. Not only can this open the door to a new generation of functional waterproof clothing, but also to ultra-rapid filtration. The ...

Wiring up carbon-based electronics

Apr 17, 2014

Carbon-based nanostructures such as nanotubes, graphene sheets, and nanoribbons are unique building blocks showing versatile nanomechanical and nanoelectronic properties. These materials which are ordered ...

Making 'bucky-balls' in spin-out's sights

Apr 16, 2014

(Phys.org) —A new Oxford spin-out firm is targeting the difficult challenge of manufacturing fullerenes, known as 'bucky-balls' because of their spherical shape, a type of carbon nanomaterial which, like ...

User comments : 0

More news stories