DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Seon-Jin | ko |
dc.contributor.author | Kim, Il-Doo | ko |
dc.contributor.author | Park, Hee Jung | ko |
dc.date.accessioned | 2021-12-07T06:40:48Z | - |
dc.date.available | 2021-12-07T06:40:48Z | - |
dc.date.created | 2021-12-07 | - |
dc.date.created | 2021-12-07 | - |
dc.date.created | 2021-12-07 | - |
dc.date.issued | 2022-01 | - |
dc.identifier.citation | APPLIED SURFACE SCIENCE, v.573 | - |
dc.identifier.issn | 0169-4332 | - |
dc.identifier.uri | http://hdl.handle.net/10203/290094 | - |
dc.description.abstract | Collecting real-time breath humidity data is important for calibrating gas sensors from interfering signals in breath components, ultimately for accurately monitoring a patient's physiological information for applications in non-invasive and point-of-care diagnostics. In this work, atomically thin 2D metal oxide nanosheets (NSs) were synthesized by a liquid phase exfoliation process and their humidity sensing properties were investigated. Interestingly, Opposite humidity sensing responses (R-D/R-H) were observed between semiconducting oxide and metallic oxide NSs. For the semiconducting manganese (Mn) oxide NSs, decreasing resistance transitions were obtained with the response of 24.01 at 44.5% RH at low humidity levels (i.e., 6.1-45% RH), which was governed by proton (H+) conduction. On the other hand, the metallic ruthenium (Ru) oxide NSs exhibited increasing resistance transitions with the response of 0.28 at 96.3% RH at a high humidity range (i.e., 50-99.9% RH) as a result of proton trapping by accepting electrons upon the exposure to excess water molecules. Ru oxide NSs exhibited the response and recovery times of 68 sec and 8 sec, respectively, at 96.3% RH. Real-time breath humidity monitoring is demonstrated by integrating Ru oxide NSs with a wristband-type wireless sensing module, which can transmit the sensing data to a mobile device. | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.title | 2D layered Mn and Ru oxide nanosheets for real-time breath humidity monitoring | - |
dc.type | Article | - |
dc.identifier.wosid | 000722835000001 | - |
dc.identifier.scopusid | 2-s2.0-85147272683 | - |
dc.type.rims | ART | - |
dc.citation.volume | 573 | - |
dc.citation.publicationname | APPLIED SURFACE SCIENCE | - |
dc.identifier.doi | 10.1016/j.apsusc.2021.151481 | - |
dc.contributor.localauthor | Kim, Il-Doo | - |
dc.contributor.nonIdAuthor | Choi, Seon-Jin | - |
dc.contributor.nonIdAuthor | Park, Hee Jung | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | 2D materials | - |
dc.subject.keywordAuthor | Metal oxide nanosheets | - |
dc.subject.keywordAuthor | Ru oxide | - |
dc.subject.keywordAuthor | Mn oxide | - |
dc.subject.keywordAuthor | Humidity sensor | - |
dc.subject.keywordPlus | GRAPHENE OXIDE | - |
dc.subject.keywordPlus | SENSOR | - |
dc.subject.keywordPlus | PHOTODETECTOR | - |
dc.subject.keywordPlus | GAS | - |
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