Selective vapor detection of an integrated chemical sensor array

Youngmo Jung, Young Jun Kim, Jaebin Choi, Chaehyun Lim, Beom Ju Shin, Hi Gyu Moon, Taikjin Lee, Jae Hun Kim, Minah Seo, Chong Yun Kang, Seong Chan Jun, Seok Lee, Chulki Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 languageEnglish
Title of host publicationFifth Asia-Pacific Optical Sensors Conference, APOS 2015
EditorsByoungho Lee, Yunjiang Rao, Sang Bae Lee
PublisherSPIE
ISBN (Electronic)9781628418651
DOIs
Publication statusPublished - 2015 Jan 1
Event5th Asia-Pacific Optical Sensors Conference, APOS 2015 - Jeju, Korea, Republic of
Duration: 2015 May 202015 May 22

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9655
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

Other5th Asia-Pacific Optical Sensors Conference, APOS 2015
CountryKorea, Republic of
CityJeju
Period15/5/2015/5/22

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Jung, Y., Kim, Y. J., Choi, J., Lim, C., Shin, B. J., Moon, H. G., Lee, T., Kim, J. H., Seo, M., Kang, C. Y., Jun, S. C., Lee, S., & Kim, C. (2015). Selective vapor detection of an integrated chemical sensor array. In B. Lee, Y. Rao, & S. B. Lee (Eds.), Fifth Asia-Pacific Optical Sensors Conference, APOS 2015 [96551A] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9655). SPIE. https://doi.org/10.1117/12.2185259