Respiratory Monitoring by Ultrafast Humidity Sensors with Nanomaterials: A Review
- 주제(키워드) humidity sensor , fast response , nanomaterial , respiratory monitoring , physiological monitoring
- 주제(기타) Chemistry, Analytical; Engineering, Electrical & Electronic; Instruments & Instrumentation
- 설명문(일반) [Kano, Shinya; Mekaru, Harutaka] Natl Inst Adv Ind Sci & Technol, Human Augmentat Res Ctr, Kashiwa, Chiba 2770882, Japan; [Kano, Shinya; Mekaru, Harutaka] Natl Inst Adv Ind Sci & Technol, Sensing Syst Res Ctr, Tsukuba, Ibaraki 3058563, Japan; [Jarulertwathana, Nutpaphat; Mohd-Noor, Syazwani; Hyun, Jerome K.] Ewha Womans Univ, Dept Chem & Nanoscience, Seoul 03760, South Korea; [Asahara, Ryota] Natl Inst Adv Ind Sci & Technol, Human Informat & Interact Res Inst, Tsukuba, Ibaraki 3058566, Japan
- 등재 SCIE, SCOPUS
- OA유형 gold, Green Published
- 발행기관 MDPI
- 발행년도 2022
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000203013
- 본문언어 영어
- Published As https://doi.org/10.3390/s22031251
- PubMed https://pubmed.ncbi.nlm.nih.gov/35161997
초록/요약
Respiratory monitoring is a fundamental method to understand the physiological and psychological relationships between respiration and the human body. In this review, we overview recent developments on ultrafast humidity sensors with functional nanomaterials for monitoring human respiration. Key advances in design and materials have resulted in humidity sensors with response and recovery times reaching 8 ms. In addition, these sensors are particularly beneficial for respiratory monitoring by being portable and noninvasive. We systematically classify the reported sensors according to four types of output signals: impedance, light, frequency, and voltage. Design strategies for preparing ultrafast humidity sensors using nanomaterials are discussed with regard to physical parameters such as the nanomaterial film thickness, porosity, and hydrophilicity. We also summarize other applications that require ultrafast humidity sensors for physiological studies. This review provides key guidelines and directions for preparing and applying such sensors in practical applications.
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