Events 8th International Symposium on Sensor Science

Event submissions

Published

10.3390/I3S2021Dresden-10069 (registering DOI)

This submission belongs to the session S6 - Special session. Flexible and Stretchable Sensors of the event 8th International Symposium on Sensor Science

Published date

17 May, 2021

Citation

Katerina Lazarova, Silvia Bozhilova, Sijka Ivanova, Darinka Christova, Tsvetanka Babeva, Study of the effect of bending deformation on the performance of flexible polymer layered humidity sensor, in Proceedings of 8th International Symposium on Sensor Science, 17 May–28 May 2021, MDPI: Basel, Switzerland, doi: 10.3390/I3S2021Dresden-10069

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Study of the effect of bending deformation on the performance of flexible polymer layered humidity sensor

Katerina Lazarova ¹

Silvia Bozhilova ²

Sijka Ivanova ²

Darinka Christova ²

Tsvetanka Babeva ³

1. Institute of Optical Materials and Technologies “Acad. J. Malinowski”, Bulgarian Academy of Sciences, Akad. G. Bonchev str, bl. 109, 1113 Sofia, Bulgaria, Bulgaria

2. Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., bl. 103-A, 1113 Sofia, Bulgaria

3. Institute of Optical Materials and Technologies ‘‘Acad. J. Malinowski’’, Bulgarian Academy of Sciences, Akad. G. Bonchev str., bl. 109, 1113 Sofia, Bulgaria

Abstract

Humidity-sensitive polymer, namely poly(vinyl alcohol-co-vinyl acetal) was deposited on a flexible poly(ethylene terephthalate) (PET) substrate pre-covered with sputtered Au:Pd thin layer in order to develop an optical flexible humidity sensor. Spin-coating method was applied for the thin polymer film deposition. The optical and sensing properties of the device were studied after repeated bending deformation in the range 25−1000 times. Transmittance measurements at different levels of relative humidity were conducted in order to examine the sensing properties of probed flexible sample. The influence of the number of bending deformations on performance of the sensor is studied and the possibility for its successful application is demonstrated and discussed.

Keywords

humidity

optical sensor

polymers

flexible substrates

PET

thin films

Manuscript

sciforum-044255.pdf

Poster

Lazarova presentation Humidity 2021_final.pdf

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