Prev. Article Next Article Table of Contents

Letter

Intrinsic Response of Graphene Vapor Sensors

Figures
Citing Articles

Your current credentials do not allow retrieval of the full text.

Purchase the full-text

PDF/HTML,
figures/images,
references and tables,
(where available)

Yaping Dan^†, Ye Lu^‡, Nicholas J. Kybert^‡^§, Zhengtang Luo^‡ and A. T. Charlie Johnson*^†^‡

Department of Electrical and Systems Engineering, Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, and Department of Physics, University of Warwick, Coventry, CV4 7AL, U.K.

Nano Lett., 2009, 9 (4), pp 1472–1475

DOI: 10.1021/nl8033637

Publication Date (Web): March 6, 2009

* To whom correspondence should be addressed. E-mail: cjohnson@physics.upenn.edu., †

Department of Electrical and Systems Engineering, University of Pennsylvania.

, ‡

Department of Physics and Astronomy, University of Pennsylvania.

, §

University of Warwick.

Section:

Inorganic Analytical Chemistry

Abstract

Graphene is a two-dimensional material with extremely favorable chemical sensor properties. Conventional nanolithography typically leaves a resist residue on the graphene surface, whose impact on the sensor characteristics has not yet been determined. Here we show that the contamination layer chemically dopes the graphene, enhances carrier scattering, and acts as an absorbent layer that concentrates analyte molecules at the graphene surface, thereby enhancing the sensor response. We demonstrate a cleaning process that verifiably removes the contamination on the device structure and allows the intrinsic chemical responses of the graphene monolayer to be measured. These intrinsic responses are surprisingly small, even upon exposure to strong analytes such as ammonia vapor.

View: Full Text HTML | Hi-Res PDF | PDF w/ Links

Citing Articles

View all 25 citing articles

Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.

This article has been cited by 25 ACS Journal articles (5 most recent appear below).

Biomimetic Peptide Nanosensors
Yue Cui, Sang N. Kim, Rajesh R. Naik, and Michael C. McAlpine
Accounts of Chemical Research2012 Article ASAP
- Biomimetic Peptide Nanosensors
  Yue Cui, Sang N. Kim, Rajesh R. Naik, and Michael C. McAlpine
  Accounts of Chemical Research2012 Article ASAP
  The development of a miniaturized sensing platform tailored for sensitive and selective detection of a variety of biochemical analytes could offer transformative fundamental and technological opportunities. Due to their high surface-to-volume ratios, ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
Stacked Graphene-Al₂O₃ Nanopore Sensors for Sensitive Detection of DNA and DNA–Protein Complexes
Bala Murali Venkatesan, David Estrada, Shouvik Banerjee, Xiaozhong Jin, Vincent E. Dorgan, Myung-Ho Bae, Narayana R. Aluru, Eric Pop, and Rashid Bashir
ACS Nano2012 6 (1), 441-450
- Stacked Graphene-Al₂O₃ Nanopore Sensors for Sensitive Detection of DNA and DNA–Protein Complexes
  Bala Murali Venkatesan, David Estrada, Shouvik Banerjee, Xiaozhong Jin, Vincent E. Dorgan, Myung-Ho Bae, Narayana R. Aluru, Eric Pop, and Rashid Bashir
  ACS Nano2012 6 (1), 441-450
  We report the development of a multilayered graphene-Al2O3 nanopore platform for the sensitive detection of DNA and DNA–protein complexes. Graphene-Al2O3 nanolaminate membranes are formed by sequentially depositing layers of graphene and Al2O3, with ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
Simultaneous Transfer and Doping of CVD-Grown Graphene by Fluoropolymer for Transparent Conductive Films on Plastic
Wi Hyoung Lee, Ji Won Suk, Jongho Lee, Yufeng Hao, Jaesung Park, Jae Won Yang, Hyung-Wook Ha, Shanthi Murali, Harry Chou, Deji Akinwande, Kwang S. Kim, and Rodney S. Ruoff
ACS Nano2012 Article ASAP
- Simultaneous Transfer and Doping of CVD-Grown Graphene by Fluoropolymer for Transparent Conductive Films on Plastic
  Wi Hyoung Lee, Ji Won Suk, Jongho Lee, Yufeng Hao, Jaesung Park, Jae Won Yang, Hyung-Wook Ha, Shanthi Murali, Harry Chou, Deji Akinwande, Kwang S. Kim, and Rodney S. Ruoff
  ACS Nano2012 Article ASAP
  Chemical doping can decrease sheet resistance of graphene while maintaining its high transparency. We report a new method to simultaneously transfer and dope chemical vapor deposition grown graphene onto a target substrate using a fluoropolymer as both ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
In Situ Electronic Characterization of Graphene Nanoconstrictions Fabricated in a Transmission Electron Microscope
Ye Lu, Christopher A. Merchant, Marija Drndić, and A. T. Charlie Johnson
Nano Letters2011 11 (12), 5184-5188
- In Situ Electronic Characterization of Graphene Nanoconstrictions Fabricated in a Transmission Electron Microscope
  Ye Lu, Christopher A. Merchant, Marija Drndić, and A. T. Charlie Johnson
  Nano Letters2011 11 (12), 5184-5188
  We report electronic measurements on high-quality graphene nanoconstrictions (GNCs) fabricated in a transmission electron microscope (TEM), and the first measurements on GNC conductance with an accurate measurement of constriction width down to 1 nm. To ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
Electrochemical Behavior of Monolayer and Bilayer Graphene
Anna. T. Valota, Ian A. Kinloch, Kostya S. Novoselov, Cinzia Casiraghi, Axel Eckmann, Ernie W. Hill, and Robert A. W. Dryfe
ACS Nano2011 5 (11), 8809-8815
- Electrochemical Behavior of Monolayer and Bilayer Graphene
  Anna. T. Valota, Ian A. Kinloch, Kostya S. Novoselov, Cinzia Casiraghi, Axel Eckmann, Ernie W. Hill, and Robert A. W. Dryfe
  ACS Nano2011 5 (11), 8809-8815
  Results of a study on the electrochemical properties of exfoliated single and multilayer graphene flakes are presented. Graphene flakes were deposited on silicon/silicon oxide wafers to enable fast and accurate characterization by optical microscopy and ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links