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A Miniaturized Amperometric Hydrogen Sulfide Sensor Applicable for Bad Breath Monitoring
KTH, School of Electrical Engineering and Computer Science (EECS), Micro and Nanosystems.
KTH, School of Electrical Engineering and Computer Science (EECS), Micro and Nanosystems.ORCID iD: 0000-0001-9552-4234
KTH, School of Electrical Engineering and Computer Science (EECS), Micro and Nanosystems.ORCID iD: 0000-0002-7147-6730
2018 (English)In: Micromachines, ISSN 2072-666X, E-ISSN 2072-666X, Vol. 9, no 12, article id 612Article in journal (Refereed) Published
Abstract [en]

Bad breath or halitosis affects a majority of the population from time to time, causing personal discomfort and social embarrassment. Here, we report on a miniaturized, microelectromechanical systems (MEMS)-based, amperometric hydrogen sulfide (H2S) sensor that potentially allows bad breath quantification through a small handheld device. The sensor is designed to detect H2S gas in the order of parts-per-billion (ppb) and has a measured sensitivity of 0.65 nA/ppb with a response time of 21 s. The sensor was found to be selective to NO and NH3 gases, which are normally present in the oral breath of adults. The ppb-level detection capability of the integrated sensor, combined with its relatively fast response and high sensitivity to H2S, makes the sensor potentially applicable for oral breath monitoring.

Place, publisher, year, edition, pages
MDPI , 2018. Vol. 9, no 12, article id 612
Keywords [en]
hydrogen sulfide, amperometric, MEMS, gas sensor, bad breath, halitosis
National Category
Medical Laboratory and Measurements Technologies
Identifiers
URN: urn:nbn:se:kth:diva-242263DOI: 10.3390/mi9120612ISI: 000455072800003PubMedID: 30469481Scopus ID: 2-s2.0-85057839920OAI: oai:DiVA.org:kth-242263DiVA, id: diva2:1285423
Note

QC 20190204

Available from: 2019-02-04 Created: 2019-02-04 Last updated: 2019-02-04Bibliographically approved

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Stemme, GöranRoxhed, Niclas

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