« Previous AbstractRapid differentiation of Chinese hop varieties (Humulus lupulus) using volatile fingerprinting by HS-SPME-GC-MS combined with multivariate statistical analysis    Next AbstractThe role of H(2)S in low temperature-induced cucurbitacin C increases in cucumber »

Sensors (Basel)

Title:		A Room Temperature VOCs Gas Sensor Based on a Layer by Layer Multi-Walled Carbon Nanotubes/Poly-ethylene Glycol Composite
Author(s):		Liu Z; Yang T; Dong Y; Wang X;
Address:		"Graduate School at Shenzhen, Tsinghua University, University Town of Shenzhen, Shenzhen 518055, China. lzt17@mails.tsinghua.edu.cn. Graduate School at Shenzhen, Tsinghua University, University Town of Shenzhen, Shenzhen 518055, China. yty15@mails.tsinghua.edu.cn. Graduate School at Shenzhen, Tsinghua University, University Town of Shenzhen, Shenzhen 518055, China. dongy@tsinghua.edu.cn. Graduate School at Shenzhen, Tsinghua University, University Town of Shenzhen, Shenzhen 518055, China. xhwang@tsinghua.edu.cn. Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, University Town of Shenzhen, Shenzhen 518055, China. xhwang@tsinghua.edu.cn"
Journal Title:		Sensors (Basel)
Year:		2018
Volume:		20180915
Issue:		9
Page Number:		-
DOI:		10.3390/s18093113
ISSN/ISBN:		1424-8220 (Electronic) 1424-8220 (Linking)
Abstract:		"Sensitive detection of volatile organic compounds (VOCs) is significant for environmental monitoring and medical applications. In this work, multi-walled carbon nanotubes (MWCNTs) and polyethylene glycol (PEG) that have good adsorption for VOCs, were sprayed layer by layer on an interdigitated electrode (IDE) to build a sensitive VOCs gas sensor. The relative resistance change ( big up tri, openR/R) when the sensor was exposed to VOCs was measured. The sensor showed high sensitivity to acetone, ethanol, isopropanol and isoprene with fast response (110 +/- 5 s) and recovery (152 +/- 5 s) at room temperature, and the lower detection limit (LDL) of the sensor reached 9 ppm. With the micro-fabricated IDE structure, the sensor can be easily built into an electric nose for VOC recognition and measurement"
Keywords:		MWCNTs Peg Voc gas sensor room temperature;
Notes:		"PubMed-not-MEDLINELiu, Zitao Yang, Tuoyu Dong, Ying Wang, Xiaohao eng JCYJ20160411164305110 and JCYJ20150831192244849/Shenzhen Science and Technology Research and Development Funds/ 2015AA043505/National High Technology Research and Development Plan of China/ Switzerland 2018/09/19 Sensors (Basel). 2018 Sep 15; 18(9):3113. doi: 10.3390/s18093113"