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게이트웨이 모듈 기반 그래핀 어레이 센서 가스 반응 연구
정영모(Youngmo Jung),전성찬(Seong Chan Jun) 한국위험물학회 2015 한국위험물학회지 Vol.3 No.1
Graphene is a promising material to use in vapor sensor material since it can be functionalized for a specific chemical gas. Here we present a way to improve the selectivity of graphene chemical sensors by using single-stranded DNAs (ssDNAs) as a sensing agent. We analyze the sensitivity and recovery of the ssDNA coated graphene devices with the different DNA sequences. According to the difference of guanine(G) and cytosine(C) rate in DNA sequence, the sensitivity and recovery are changed for a specific gas. The resulting devices show a higher recovery rate to the baseline associated with bare graphene at room temperature. We can classify NH3, NO2, CO, SO2 vapor based on the pattern analysis of the sensor array using Principle Component Analysis (PCA), in terms of the sensitivity and recovery rate.
Glucose Detection with Radio Frequency Biosensor
박형구(Hyung Goo Park),정영모(Youngmo Jung),윤형서(Hyongseo Yoon),오주영(Juyoung Oh),임주환(Juhwan Lim) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4
A glucose detecting biosensor, based on the S parameter in RF, is presented in this article. Glucose is possible to finely detect with PBA on the surface of the nano-scaled graphene. This PBA provides the excellent sensitivity and accuracy, covalently bonded to two or three hydroxides of glucose.