弹性冰的微纤维
Peizhen Xu1, Bowen Cui1, Yeqiang Bu2
1State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China.
Science (New York, N.Y.)
|July 10, 2021
概括
单晶冰微纤维具有显著的弹性,曲率高达10.9%. 这一发现为微观冰物理学和技术开辟了新的途径.
科学领域:
- 材料科学
- 物理
- 纳米技术
背景情况:
- 冰通常被认为是一种易碎的硬质材料.
- 在微和纳米尺度上的冰的变形并未得到充分理解.
研究的目的:
- 研究单晶冰微纤维的机械性能.
- 探索这些新的冰结构的潜在应用.
主要方法:
- 制造从800nm到10μm直径的冰微纤维.
- 低温机械测试以评估弹性和延展极限.
- 使用显微镜观察压力诱导的相变.
主要成果:
- 冰的微纤维具有很高的弹性,可逆曲率高达10.9%.
- 在曲的IMF中观察到由压力诱导的从冰I到冰II的相位过渡.
- 高光学质量,可实现低损耗的光学波导和低声画廊模式共振.
结论:
- 单晶IMF具有非常高的弹性,接近理论极限.
- 观察到的相位过渡突出显示了极端微观变形下的冰的独特行为.
- 灵活的IMF为微/纳米冰物理研究和技术创新提供了新平台.
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