Closed cell graphene structure for Strain Sensor application
발표자
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초록
내용
Nowadays, recent development in designing graphene-based 3D structure shows new possibilities for various applications. Most of them are prepared by means of random self-assemblies of graphene oxide or graphene nanosheets via direct freeze-drying or hydrothermal processes, and direct template chemical deposition. These methods have created the large-scale 3D structure like Graphene Oixde aerogel, but it is still challenging to generate well-defined 3d regular graphene structure. To overcome this limitation, we use microfluidic system for generating building blocks to make 3D hierarchical graphene structures. After reduction process, building blocks are transformed into 3D well-defined interconnected network structure with having electrical conductivcity. Then, the resulting 3D closed-cellular structure serves as the strain gauge. And the strain gauge exhibited the gauge factor of around 4 and it shows excellent mechanical reversibility over250 cycles.