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논문 기본 정보

자료유형
학술저널
저자정보
Zhang, Wenjun (Department of Civil & Environmental Engineering, Northeastern University) Liu, Yu (Department of Electrical & Computer Engineering, Northeastern University) Wang, Ming. L (Department of Civil & Environmental Engineering, Northeastern University)
저널정보
테크노프레스 Smart structures and systems Smart structures and systems 제12권 제1호
발행연도
2013.1
수록면
73 - 95 (23page)

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초록· 키워드

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Nine deoxyribonucleic acid (DNA) sequences were used to functionalize single-walled carbon nanotube (SWNT) sensors to detect the trace amount of methanol, acetone, and HCl in vapor. DNA 24 Ma (24 randomly arranged nitrogenous bases with one amine at each end of it) decorated SWNT sensor and DNA 24 A (only adenine (A) base with a length of 24) decorated SWNT sensor have demonstrated the largest sensing responses towards acetone and HCl, respectively. On the other hand, for the DNA GT decorated SWNT sensors with different sequence lengths, the optimum DNA sequence length for acetone and HCl sensing is 32 and 8, separately. The detection of methanol, acetone, and HCl have identified that DNA functionalized SWNT sensors exhibit great selectivity, sensitivity, and repeatability with an accuracy of more than 90%. Further, a sensor array composed of SWNT functionalized with various DNA sequences was utilized to identify acetone and HCl through pattern recognition. The sensor array is a combination of four different DNA functionalized SWNT sensors and two bare SWNT sensors (work as reference). This wireless sensing system has enabled real-time gas monitoring and air quality assurance for safety and security.

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