Abstract
Graphene is a promising material for vapor sensor applications because of its potential to be functionalized for specific chemical gases. In this work, we present a graphene gas sensor that uses single-stranded DNA (ssDNA) molecules as its sensing agent. We investigate the characteristics of graphene field effect transistors (FETs) coated with different ssDNAs. The sensitivity and recovery rate for a specific gas are modified according to the differences in the DNA molecules' Guanine (G) and Cytosine (C) content. ssDNA-functionalized devices show a higher recovery rate compared to bare graphene devices. Pattern analysis of a 2-by-2 sensor array composed of graphene devices functionalized with different-sequence ssDNA enables identification of NH3, NO2, CO, SO2 using Principle Component Analysis (PCA).
Original language | English |
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Title of host publication | Fifth Asia-Pacific Optical Sensors Conference, APOS 2015 |
Editors | Byoungho Lee, Yunjiang Rao, Sang Bae Lee |
Publisher | SPIE |
ISBN (Electronic) | 9781628418651 |
DOIs | |
Publication status | Published - 2015 |
Event | 5th Asia-Pacific Optical Sensors Conference, APOS 2015 - Jeju, Korea, Republic of Duration: 2015 May 20 → 2015 May 22 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 9655 |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Other
Other | 5th Asia-Pacific Optical Sensors Conference, APOS 2015 |
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Country/Territory | Korea, Republic of |
City | Jeju |
Period | 15/5/20 → 15/5/22 |
Bibliographical note
Publisher Copyright:© 2015 Copyright SPIE.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering