激光诱导化用于控制溶液中的结晶
Nagaraj Nagalingam1, Aswin Raghunathan1, Vikram Korede1
1Process and Energy Department, Delft University of Technology, Leeghwaterstraat 39, 2628 CB Delft, Netherlands.
Physical review letters
|October 6, 2023
概括
激光诱导的化气泡会触发超和溶液中的结晶. 该过程依赖于激光能量,散热控制蒸发,并产生超和峰值,影响晶体形成.
科学领域:
- 物理化学 物理化学
- 材料科学 材料科学 材料科学
- 激光物理 激光物理
背景情况:
- 超和溶液的结晶在各种科学和工业应用中至关重要.
- 控制核化动力学对于定制晶体特性至关重要.
- 激光物质相互作用为操纵物理过程提供了新的方法.
研究的目的:
- 研究激光诱导的化气泡形成的机制及其对结晶的影响.
- 阐明激光能量,泡动力学和核化动力学之间的关系.
- 了解溶剂蒸发和超和在蒸汽-液体界面的作用.
主要方法:
- 使用低于分解值的Nd:YAG激光脉冲启动化气泡.
- 高速视频显微镜观察气泡动力学和晶体核形成.
- 计算模拟以模拟蒸发和超和在蒸汽-液体界面上的溶剂.
主要成果:
- 化气泡从过的水溶液中诱导结晶.
- 核化动力学取决于超和度和激光脉冲能量.
- 模拟显示,散热 (潜伏热与感应热) 控制了蒸发速度,并产生了短暂的超和峰值.
- 晶体数量和形态与模拟超和峰值的特征相关.
结论:
- 激光诱导的化提供了一种可控制的方法来启动结晶.
- 激光能量吸收,散热和溶剂蒸发之间的相互作用决定了结晶过程.
- 这项研究提供了通过定制的激光-液体相互作用来控制晶体核和生长的见解.
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