About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Functional Nanomaterials: Functional Low-dimensional Materials (0D, 1D, 2D) Driving Innovations in Electronics, Energy, Sensors, and Environmental Engineering and Science 2021
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Presentation Title |
Suspended Graphene H2 Sensors With Enhanced Sensitivity Fabricated Using Direct-write Functional Fibers |
Author(s) |
Abiral Regmi, Dongwoon Shin, Noori Na, Jiyoung Chang |
On-Site Speaker (Planned) |
Abiral Regmi |
Abstract Scope |
In this study, we investigate the hydrogen sensing mechanism of precisely patterned suspended graphene-based sensor fabricated using near-field electrospinning of functional polymer. The functional polymer changes the specificity of the graphene channel by introducing doping effect and also can be used as an etch mask to pattern suspended graphene channel of desired width. Suspended graphene channels have higher surface to volume ratio and larger gas adsorption area; thereby, sensor with enhanced sensitivity is realized. We characterize the actual sensor’s response at various conditions of molecular adsorption and compare the result with simulated values. The ultra-low power consumption capability and miniature size of the sensor makes the sensor ideal for sensing application. Therefore, our study highlights a simple, cost-effective and one-step precise patterning process to create suspended graphene channels via near-field electrospinning and realizes a suspended graphene sensor to demonstrate the importance of our method in the field of chemical sensing. |
Proceedings Inclusion? |
Planned: |