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Literature DB >> 18850701

Solution-gated epitaxial graphene as pH sensor.

Priscilla Kailian Ang¹, Wei Chen, Andrew Thye Shen Wee, Kian Ping Loh.

Abstract

A solution-gate field effect transistor (SGFET) has been fabricated on few-layer graphene (FLG). The ideally polarizable graphene/aqueous electrolyte interface allows the capacitive charging of the surface by hydroxyl (OH-) and hydroxonium ions (H3O+). The conductivity versus gate potential curve exhibits "V" shaped ambipolar transfer characteristics of graphene, with hole and electron mobilities of 3600 cm2/Vs and 2100 cm2/Vs, respectively. The shift of the negative gate potential with pH shows a supra-Nernstian response of 99 meV/pH. Our work points to the potential application of graphene in ultrafast and ultralow noise chemical or biological sensors.

Entities: Chemical

Year: 2008 PMID： 18850701 DOI： 10.1021/ja805090z

Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419

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Cited

38 in total

1. Flow injection small-volume fiber-optic pH sensor based on evanescent wave excitation and fluorescence determination.

Authors: Yan Xiong; Ying Huang; Zhongbin Ye; Yafeng Guan
Journal: J Fluoresc Date: 2010-12-24 Impact factor: 2.217

2. pH Sensing Properties of Flexible, Bias-Free Graphene Microelectrodes in Complex Fluids: From Phosphate Buffer Solution to Human Serum.

Authors: Jinglei Ping; Jacquelyn E Blum; Ramya Vishnubhotla; Amey Vrudhula; Carl H Naylor; Zhaoli Gao; Jeffery G Saven; Alan T Charlie Johnson
Journal: Small Date: 2017-06-14 Impact factor: 13.281

Review 3. A review of organic and inorganic biomaterials for neural interfaces.

Authors: Pouria Fattahi; Guang Yang; Gloria Kim; Mohammad Reza Abidian
Journal: Adv Mater Date: 2014-03-26 Impact factor: 30.849

4. Removal of endrin and dieldrin isomeric pesticides through stereoselective adsorption behavior on the graphene oxide-magnetic nanoparticles.

Authors: Kamlesh Shrivas; Archana Ghosale; Nidhi Nirmalkar; Arti Srivastava; Sunil Kumar Singh; Sandip S Shinde
Journal: Environ Sci Pollut Res Int Date: 2017-09-16 Impact factor: 4.223

Solution-gated epitaxial graphene as pH sensor.

1. Flow injection small-volume fiber-optic pH sensor based on evanescent wave excitation and fluorescence determination.

2. pH Sensing Properties of Flexible, Bias-Free Graphene Microelectrodes in Complex Fluids: From Phosphate Buffer Solution to Human Serum.

Review 3. A review of organic and inorganic biomaterials for neural interfaces.

4. Removal of endrin and dieldrin isomeric pesticides through stereoselective adsorption behavior on the graphene oxide-magnetic nanoparticles.

5. Polyelectrolyte multilayer electrostatic gating of graphene field-effect transistors.

6. Ion Sensing with Solution-Gated Graphene Field-Effect Sensors in the Frequency Domain.

7. In vivo targeting and imaging of tumor vasculature with radiolabeled, antibody-conjugated nanographene.

8. An aptameric graphene nanosensor for label-free detection of small-molecule biomarkers.

9. Modeling Electrolytically Top-Gated Graphene.

10. Detecting the translocation of DNA through a nanopore using graphene nanoribbons.