可打印的液体金属泡,当水时会生长
Febby Krisnadi1, Seoyeon Kim2, Sooik Im1
1Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, 27695, USA.
Advanced materials (Deerfield Beach, Fla.)
|January 22, 2024
概括
将少量水添加到液态金属泡 (LMFs) 中会引起显著的泡,扩大其体积. 这一过程产生了适合4D打印应用的多孔,导电材料.
科学领域:
- 材料科学 材料科学 材料科学
- 材料工程 材料工程 材料工程
- 纳米技术 纳米技术
背景情况:
- 液体金属泡 (LMFs) 结合了金属性质和类似糊状的质学.
- 通过打印,LMF可以在室温下模拟成可拉伸导体.
- 简单的LMF是通过在空气中动液态金属 (LM) 制成的,从而引入氧化物层的空气口袋.
研究的目的:
- 为了研究LMFs与水混合时的泡行为.
- 探索水诱导LMF的特性和潜在应用.
- 用扩展导电材料展示一种新的4D打印方法.
主要方法:
- 在预先成型的LMF中混合少量水 (低至1 wt%) .
- 由此产生的泡结构的特征,包括体积膨胀和多孔性.
- 评估扩展的LMF的电导率和环境响应.
主要成果:
- 添加水会引发大量的泡,使体积增加约4-5倍.
- 由此产生的多孔LMF表现出保留的电导率.
- 膨胀过程是由进化和氧化物形成反应驱动的.
- 控制水的暴露可以保持金属的特性,而过度暴露会导致金属的消耗.
结论:
- 控制添加水是泡LMF的有效方法,产生多孔导电材料.
- 这些LMF的扩展和调节性能使得新的4D打印应用成为可能.
- 仔细控制水暴露对于保持金属元件的完整性和功能至关重要.
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