Sliver-Nanoparticle Enhanced Pva Thin-Film Colorimetric Humidity Sensor

Yangxi Zhang, Ouyang Xia, Kwun Hei Ho, Zengtian Liang, Dangyuan Lei, A. Ping Zhang, Hwa Yaw Tam

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

In this paper, a fast-response colorimetric humidity sensor based on silver-nanoparticle (AgNP) enhanced polyvinyl alcohol (PVA) thin-film interferometer is reported. The AgNPs are directly printed on a titanium dioxide (TiO2) capped quartz substrate via precision photoreduction technology. Compared with a single layer of PVA film, this PVA-AgNP-TiO2 structure displays more brilliant and abundant colors. The colorimetric sensor can rapidly respond to humidity change in air, and the measured rise time of response is 87 ms. Such fast-response colorimetric sensors have great potential for many applications, such as breath analysis and smartphone camera-based biochips.

Original languageEnglish
Title of host publication2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1219-1221
Number of pages3
ISBN (Electronic)9781728120072
DOIs
Publication statusPublished - Jun 2019
Event20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII - Berlin, Germany
Duration: 23 Jun 201927 Jun 2019

Publication series

Name2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII

Conference

Conference20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII
CountryGermany
CityBerlin
Period23/06/1927/06/19

Keywords

  • colorimetric sensor
  • humidity sensor
  • Silver nanoparticles
  • thin-film interferometer

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Spectroscopy
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Electronic, Optical and Magnetic Materials
  • Control and Optimization
  • Instrumentation

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