Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 현가담 | * |
dc.date.accessioned | 2021-11-10T16:30:56Z | - |
dc.date.available | 2021-11-10T16:30:56Z | - |
dc.date.issued | 2021 | * |
dc.identifier.issn | 1944-8244 | * |
dc.identifier.issn | 1944-8252 | * |
dc.identifier.other | OAK-30211 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/259266 | - |
dc.description.abstract | Touchless user interfaces offer an attractive pathway toward hygienic, remote, and interactive control over devices. Exploiting the humidity generated from fingers or human speech is a viable avenue for realizing such technology. Herein, titania microspheres including solid and yolk-shell structures with varying microstructural characteristics were demonstrated as high-performance, ultrafast, and stable optical humidity sensors aimed for touchless control. When water molecules enter the microporous network of the microspheres, the effective refractive index of the microsphere increases, causing a detectable change in the light scattering behavior. The microstructural properties of the microspheres, namely, the pore characteristics, crystallinity, and particle size, were examined in relation to the humidity-sensing performance, establishing optimum structural conditions for realizing humidity-responsive wavelength shifts above 100 nm, near full-scale relative humidity (RH) responsivity, ultrashort response times below 30 ms, and prolonged lifetimes. These optimized microspheres were used to demonstrate a colorimetric touchless sensor that responds to humidity from a finger and a microcontroller-based detector that translates the moisture pattern from human speech to electrical signals in real time. These results provide practical strategies for enabling humidity-based touchless user interfaces. | * |
dc.language | English | * |
dc.publisher | AMER CHEMICAL SOC | * |
dc.subject | titania microspheres | * |
dc.subject | mesoporous particles | * |
dc.subject | humidity sensors | * |
dc.subject | Mie scattering | * |
dc.subject | touchless control | * |
dc.subject | ultrashort humidity responsivity | * |
dc.title | Mesoporous Solid and Yolk-Shell Titania Microspheres as Touchless Colorimetric Sensors with High Responsivity and Ultrashort Response Times | * |
dc.type | Article | * |
dc.relation.issue | 37 | * |
dc.relation.volume | 13 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 44786 | * |
dc.relation.lastpage | 44796 | * |
dc.relation.journaltitle | ACS APPLIED MATERIALS & INTERFACES | * |
dc.identifier.doi | 10.1021/acsami.1c12514 | * |
dc.identifier.wosid | WOS:000700877100092 | * |
dc.identifier.scopusid | 2-s2.0-85115636443 | * |
dc.author.google | Jarulertwathana, Nutpaphat | * |
dc.author.google | Mohd-Noor, Syazwani | * |
dc.author.google | Hyun, Jerome K. | * |
dc.contributor.scopusid | 현가담(15059072600) | * |
dc.date.modifydate | 20240429132401 | * |