Flexible Room-Temperature NH3 Sensor for Ultrasensitive, Selective, and Humidity-Independent Gas Detection
DC Field | Value | Language |
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dc.contributor.author | Li, Hua-Yao | - |
dc.contributor.author | Lee, Chul-Soon | - |
dc.contributor.author | Kim, Do Hong | - |
dc.contributor.author | Lee, Jong-Heun | - |
dc.date.accessioned | 2021-09-02T07:37:57Z | - |
dc.date.available | 2021-09-02T07:37:57Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2018-08-22 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/73739 | - |
dc.description.abstract | Ammonia (NH3) is an irritant gas with a unique pungent odor; sub-parts per million-level breath ammonia is a medical biomarker for kidney disorders and Helicobacter pylon bacteria-induced stomach infections. The humidity varies in both ambient environment and exhaled breath, and thus humidity dependence of gas-sensing characteristics is a great obstacle for real-time applications. Herein, flexible, humidity-independent, and room-temperature ammonia sensors are fabricated by the thermal evaporation of CuBr on a polyimide substrate and subsequent coating of a nanoscale moisture-blocking CeO2 overlayer by electron beam evaporation. CuBr sensors coated with a 100 nm-thick CeO2 overlayer exhibits an ultrahigh response (resistance ratio) of 68 toward 5 ppm ammonia with excellent gas selectivity, rapid response, reversibility, and humidity-independent sensing characteristics at room temperature. In addition, the sensing performance remains stable after repetitive bending and long-term operation. Moreover, the sensors exhibit significant response to the simulated exhaled breath of patients with H. pylori infection; the simulated breath contains 50 ppb NH3. The sensors thus show promising potential in detecting sub-parts per million-level NH3, regardless of humidity fluctuations, which can open up new applications in wearable devices for in situ medical diagnosis and indoor/outdoor environment monitoring. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | AMMONIA GAS | - |
dc.subject | BREATH AMMONIA | - |
dc.subject | ELECTRICAL-CONDUCTIVITY | - |
dc.subject | FACILE FABRICATION | - |
dc.subject | CHEMICAL SENSORS | - |
dc.subject | CUBR FILMS | - |
dc.subject | PERFORMANCE | - |
dc.subject | DISEASE | - |
dc.subject | CEO2 | - |
dc.subject | NANOCOMPOSITE | - |
dc.title | Flexible Room-Temperature NH3 Sensor for Ultrasensitive, Selective, and Humidity-Independent Gas Detection | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Heun | - |
dc.identifier.doi | 10.1021/acsami.8b09169 | - |
dc.identifier.scopusid | 2-s2.0-85050860128 | - |
dc.identifier.wosid | 000442706600034 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.10, no.33, pp.27858 - 27867 | - |
dc.relation.isPartOf | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 10 | - |
dc.citation.number | 33 | - |
dc.citation.startPage | 27858 | - |
dc.citation.endPage | 27867 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | AMMONIA GAS | - |
dc.subject.keywordPlus | BREATH AMMONIA | - |
dc.subject.keywordPlus | ELECTRICAL-CONDUCTIVITY | - |
dc.subject.keywordPlus | FACILE FABRICATION | - |
dc.subject.keywordPlus | CHEMICAL SENSORS | - |
dc.subject.keywordPlus | CUBR FILMS | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | DISEASE | - |
dc.subject.keywordPlus | CEO2 | - |
dc.subject.keywordPlus | NANOCOMPOSITE | - |
dc.subject.keywordAuthor | gas sensor | - |
dc.subject.keywordAuthor | ammonia | - |
dc.subject.keywordAuthor | CeO2-coated CuBr | - |
dc.subject.keywordAuthor | humidity dependence | - |
dc.subject.keywordAuthor | exhaled breath analysis | - |
dc.subject.keywordAuthor | selectivity | - |
dc.subject.keywordAuthor | medical diagnosis | - |
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