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https://open.uns.ac.rs/handle/123456789/18042
Nаziv: | Fabrication and Characterization of Flexible and Miniaturized Humidity Sensors Using Screen-Printed TiO2 Nanoparticles as Sensitive Layer | Аutоri: | Dubourg, Georges Segkos, Apostolos Katona, Jaroslav Radović, Marko Savić, Slavica Niarchos, Georgios Tsamis, Christos Crnojević-Bengin, Vesna |
Ključnе rеči: | humidity sensors; flexible substrate; TiO2 nanoparticles; screen-printing; laser ablation | Dаtum izdаvаnjа: | авг-2017 | Izdаvаč: | MDPI | Čаsоpis: | Sensors | Sažetak: | This paper describes the fabrication and the characterization of an original example of a miniaturized resistive-type humidity sensor, printed on flexible substrate in a large-scale manner. The fabrication process involves laser ablation for the design of interdigitated electrodes on PET (Poly-Ethylene Terephthalate) substrate and a screen-printing process for the deposition of the sensitive material, which is based on TiO2 nanoparticles. The laser ablation process was carefully optimized to obtain micro-scale and well-resolved electrodes on PET substrate. A functional paste based on cellulose was prepared in order to allow the precise screen-printing of the TiO2 nanoparticles as sensing material on the top of the electrodes. The current against voltage (I–V) characteristic of the sensor showed good linearity and potential for low-power operation. The results of a humidity-sensing investigation and mechanical testing showed that the fabricated miniaturized sensors have excellent mechanical stability, sensing characteristics, good repeatability, and relatively fast response/recovery times operating at room temperature. | URI: | https://open.uns.ac.rs/handle/123456789/18042 | ISSN: | 1424-8220 | DOI: | 10.3390/s17081854 |
Nаlаzi sе u kоlеkciјаmа: | IBS Publikacije/Publications |
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