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Potentiometric cholesterol biosensing application of graphene electrode with stabilized polymeric lipid membrane

100%
Nikoleli G.-P., Ibupoto Z., Nikolelis D., Likodimos V., Psaroudakis N., Tzamtzis N., Willander M., Hianik T.
Open Chemistry
|
2013
|
vol. 11
|
issue 9
1554-1561
EN
Abstract A novel potentiometric cholesterol biosensor has been fabricated through the immobilization of the stabilized polymeric lipid membrane onto graphene electrode. The stabilized polymeric lipid membrane is composed of cholesterol oxidase enzyme and polymerization mixture; which holds paramount influence on the properties of the cholesterol biosensor. The presented biosensor reveals an appreciable reproducibility, good selectivity and high sensing capability with a linear slope curve of ∼64 mV per decade. The strong biocompatibility among stabilized polymeric lipid membranes and human biofluids provides the possibility to use for real blood samples and other biological applications. Graphical abstract [...]
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Probing Electronic Properties of Graphene on the Atomic Scale by Scanning Tunneling Microscopy and Spectroscopy

72%
Gao L.
Graphene and 2D Materials
|
2014
|
vol. 1
|
issue 1
EN
Atomic scale investigations of the electronic properties of graphene are playing a crucial role in understanding and tuning the exotic properties of this material for its potential device applications. Scanning tunneling microscopy (STM) and spectroscopy (STS) are unique techniques for atomic scale investigations and have been extensively used in graphene research. In this article, we review recent progresses in STM and STS studies of the electronic properties of suspended graphene as well as graphene supported by different substrates including graphite, metals, silicon carbide, silicon dioxide and boron nitride.
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