High Flexibility and Sensitivity of Amorphous Metal Based Strain Sensor with Graphene Nanoplatelets
발표자
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초록
내용
Amorphous metal (AM) alloy consists of metal components that are not coordinated into crystalline state upon quenching, which results in metal alloy with properties of amorphous solids. AM thin film is a suitable candidate for strain-sensing electrode, which requires high electrical conductivity for sensing performance and chemical stability for high reliability. However, previously reported AM-based sensors suffer narrow operation range due to the materials’ low elastic limit, (ε < 1%) which reduces applicability of the strain sensors. In this research, wide elastic limit (over 10% strain) strain sensor with Al-based AM thin film is realized with layer-by-layer coated graphene layers which elongate sensible range of strain. Furthermore, due to AM thin film’s high chemical stability, strain sensor with AM exhibits reliable performance under various conditions compared to crystalline counterparts.