Roll-to-roll manufacturing of flexible acetone sensors
Ya-Ching Yu, Nicholas Glassmaker, Ana M. Ulloa, Benson Kunhung Tsai, Amit Barui, Haiyan Wang, Lia Stanciu, Yadvendra Singh, Yadvendra Singh, Yadvendra Singh, Yadvendra Singh
TL;DR
This paper introduces a scalable method to manufacture flexible acetone sensors using a nanocomposite material, enabling efficient and reliable detection of volatile organic compounds.
Contribution
The first roll-to-roll manufactured flexible acetone sensor using a MoS2-SWCNT nanocomposite is proposed, enabling scalable production.
Findings
Electro-spraying produced over 100 uniform electrodes with an average resistance of 99.63 Ω.
Functionalization with tetrafluorohydroquinone improved acetone selectivity and sensor response by 120%.
The sensor retained 90% of its signal after 30 days in nitrogen, demonstrating good stability.
Abstract
A fully roll-to-roll (R2R) manufactured conductometric sensor has been developed for acetone detection. It features flexible, screen-printed silver electrodes modified with a MoS2 and single-walled carbon nanotube (SWCNT) nanocomposite. The electro-spraying process allowed for the simultaneous fabrication of over 100 electrodes. The optimized electro-sprayed electrodes showed a consistent average resistance of 99.63 Ω (SD = 8.10), ensuring uniform and reliable sensor performance for volatile organic compounds (VOCs) detection. SEM and TEM analyses revealed that the porous 3D MoS2-SWCNT network enhances gas adsorption and sensor performance. To improve acetone selectivity, electrodes were functionalized with tetrafluorohydroquinone (TFQ), which binds with acetone and facilitates charge transfer, reducing holes in p-type SWCNT and increasing resistance. Sensitivity was further optimized…
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Taxonomy
TopicsGas Sensing Nanomaterials and Sensors · Advanced Chemical Sensor Technologies · Electrochemical sensors and biosensors