Interfacial properties of gallium-based liquid metal alloys: Cytotoxicity and wetting
발표자
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초록
내용
Due to their attractive properties, such as high electrical/thermal conductivity, fluidic characteristics, low surface energy and toxicity, numerous applications of the liquid metals have been developed in diverse fields ranging from stretchable/self-healing electrodes to thermal interfacing materials, and drug-delivery. The oxide nanolayer is naturally formed on the liquid metal, which significantly reduces the surface tension. Understanding of such an interfacial phenomenon is critical to manipulate the liquid metal having high surface tension (＞ 600 mNm-1 in oxide-free state). In the first part of the talk, the cytotoxicity of the releasates from the surface of the liquid metal in water is discussed and compared to that of other toxic elements. In the second part of the talk, wetting characteristics of the liquid metal on various substrates with different materials and surface morphology is discussed.