Surface Modification of Gallium‐Based Liquid Metals: Mechanisms and Applications in Biomedical Sensors and Soft Actuators
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- Ki Yoon Kwon
- School of Chemical Engineering Sungkyunkwan University (SKKU) Suwon 16419 Republic of Korea
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- Vi Khanh Truong
- Nanobiotechnology Lab School of Science College of Science, Engineering and Health RMIT University Melbourne VIC 3000 Australia
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- Febby Krisnadi
- Department of Chemical and Biomolecular Engineering North Carolina State University 911 Partners Way Raleigh NC 27695 USA
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- Sooik Im
- Department of Chemical and Biomolecular Engineering North Carolina State University 911 Partners Way Raleigh NC 27695 USA
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- Jinwoo Ma
- Department of Chemical and Biomolecular Engineering North Carolina State University 911 Partners Way Raleigh NC 27695 USA
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- Nazgol Mehrabian
- Department of Chemical and Biomolecular Engineering North Carolina State University 911 Partners Way Raleigh NC 27695 USA
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- Tae-il Kim
- School of Chemical Engineering Department of Biomedical Engineering Biomedical Institute for Convergence at SKKU (BICS) Sungkyunkwan University (SKKU) Suwon 16419 Republic of Korea
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- Michael D. Dickey
- Department of Chemical and Biomolecular Engineering North Carolina State University 911 Partners Way Raleigh NC 27695 USA
説明
<jats:sec><jats:label /><jats:p>This review focuses on surface modifications to gallium‐based liquid metals (LMs), which are stretchable conductors with metallic conductivity and nearly unlimited extensibility due to their liquid nature. Despite the enormous surface tension of LM, it can be patterned into nonspherical shapes, such as wires, due to the presence of a native oxide shell. Incorporating inherently soft LM into elastomeric devices offers comfort, mechanical compliance, and stretchability. The thin oxide layer also enables the formation of stable liquid colloids and LM micro/nanosized droplets that do not coalesce easily. The oxide layer can also be exfoliated and chemically modified into semiconductor 2D materials to create and deposit atomically thin materials at room temperature. Thus, the interface and its manipulation are important. This review summarizes physical and chemical methods of modifying the surface of LM to tune its properties. The surface modification of LM provides unique applications, including use in soft biomedical sensors and actuators with mechanical properties similar to human tissue.</jats:p></jats:sec>
収録刊行物
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- Advanced Intelligent Systems
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Advanced Intelligent Systems 3 (3), 2020-11-20
Wiley