{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T21:54:06Z","timestamp":1775685246495,"version":"3.50.1"},"reference-count":27,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2018,9,15]],"date-time":"2018-09-15T00:00:00Z","timestamp":1536969600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Shenzhen Science and Technology Research and Development Funds","award":["JCYJ20160411164305110 and  JCYJ20150831192244849"],"award-info":[{"award-number":["JCYJ20160411164305110 and  JCYJ20150831192244849"]}]},{"name":"National High Technology Research and Development Plan of China","award":["2015AA043505"],"award-info":[{"award-number":["2015AA043505"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>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 (\u25b3R\/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 \u00b1 5 s) and recovery (152 \u00b1 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.<\/jats:p>","DOI":"10.3390\/s18093113","type":"journal-article","created":{"date-parts":[[2018,9,17]],"date-time":"2018-09-17T10:42:20Z","timestamp":1537180940000},"page":"3113","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":52,"title":["A Room Temperature VOCs Gas Sensor Based on a Layer by Layer Multi-Walled Carbon Nanotubes\/Poly-ethylene Glycol Composite"],"prefix":"10.3390","volume":"18","author":[{"given":"Zitao","family":"Liu","sequence":"first","affiliation":[{"name":"Graduate School at Shenzhen, Tsinghua University, University Town of Shenzhen, Shenzhen 518055, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tuoyu","family":"Yang","sequence":"additional","affiliation":[{"name":"Graduate School at Shenzhen, Tsinghua University, University Town of Shenzhen, Shenzhen 518055, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ying","family":"Dong","sequence":"additional","affiliation":[{"name":"Graduate School at Shenzhen, Tsinghua University, University Town of Shenzhen, Shenzhen 518055, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaohao","family":"Wang","sequence":"additional","affiliation":[{"name":"Graduate School at Shenzhen, Tsinghua University, University Town of Shenzhen, Shenzhen 518055, China"},{"name":"Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, University Town of Shenzhen, Shenzhen 518055, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,9,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"633","DOI":"10.1016\/j.molmed.2015.08.001","article-title":"Exhaled molecular fingerprinting in diagnosis and monitoring: Validating volatile promises","volume":"21","author":"Boots","year":"2015","journal-title":"Trends Mol. 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