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BPN842: Conductometric Gas Sensing Behavior of WS2 Aerogel

Project ID BPN842
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Start Date Tue 2016-Aug-23 18:10:58
Last Updated Wed 2016-Aug-24 11:36:45
Abstract The gas sensing characteristics of a high surface area tungsten disulfide (WS2) aerogel are investigated. Gas sensors are fabricated by integrating a low-density WS2 aerogel onto a low power polysilicon microheater platform to provide control over the operating temperature. The response of the WS2 aerogel-based sensors to NO2, O2, and H2 is investigated with the sensing characteristics indicating p-type behavior. The optimum sensing temperature is found to be about 250 ℃;, when considering sensitivity, power consumption and response time. The role of O2 in H2 and NO2 sensing is probed and O2 is found to be helpful for enhancing the sensitivity and recovery of the sensor to H2.
Status New
Funding Source NSF
IAB Research Area Physical Sensors & Devices
Researcher(s) Wenjun Yan
Advisor(s) Roya Maboudian, Carlo Carraro
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