Fabrication and characterization of low-cost humidity sensor

被引：0
|
作者：
Pasupuleti, Venkata Prasanth [1 ]
Sarje, Anshu [1 ]
机构：
[1] IIIT Hyderabad, CVEST, Hyderabad, India
来源：
2022 IEEE INTERNATIONAL CONFERENCE ON FLEXIBLE AND PRINTABLE SENSORS AND SYSTEMS (IEEE FLEPS 2022) | 2022年
关键词：
thin film sensors; spray coating; spin-coating; drop-casting; low-cost sensor fabrication; humidity sensor;
D O I：
10.1109/FLEPS53764.2022.9781593
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper presents a low cost, easy to fabricate, thin-film sensor. We used three different methods to make the thin film using two different base (film) materials: carbon and graphite. We briefly summarize the method and outcome of multi-layer thin film fabrication using spray coating, spin-coating, and drop-casting. The quality of the thin films is compared, and electrical resistance is characterized. The fabricated thin film is used to measure humidity and is characterized against a commercial humidity sensor (DHT22). The experimental details and results of humidity measurement are discussed. We were able to achieve resistance range of 5k - 1.5k ohms for 40 - 80 % RH, respectively. Plans to further optimize the sensitivity of the sensor, in future is discussed.
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页数：4
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