在超高超和溶液中无缺陷单晶纤维的晶体生长
Chixuan Li1, Xueni Liu1, Zeyu Gao1
1State Key laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
Inorganic chemistry
|November 13, 2023
概括
研究人员开发了一种新的溶液生长技术,以创建超细二酸 (KDP) 种子纤维晶体 (SCF). 这种方法抑制了镜生长,并使得快速的[001]方向生长,产生长达一厘米的SCF.
科学领域:
- 晶体的成长 晶体的成长
- 材料科学 材料科学 材料科学
- 晶体学 晶体学是指结晶学.
背景情况:
- 二酸 (KDP) 晶体对于非线性光学和激光应用至关重要.
- 现有的融化生长技术在生产超细KDP种子纤维晶体 (SCF) 方面存在局限性.
- 控制晶体形态和生长方向对于量身定制的材料特性至关重要.
研究的目的:
- 开发一种新的解决方案生长技术,用于生产超细KDPSCF.
- 为了抑制不必要的镜生长,并促进沿着[001]方向的快速生长.
- 调查KDPSCF在不同晶体面上生长的关键超和点.
主要方法:
- 控制超和和选择高质量的种子,以促进KDPSCF的生长.
- 溶液生长技术应用于KDP种子晶体.
- 原子力显微镜 (AFM) 用于分析表面微观形态学.
主要成果:
- 成功抑制了 prismatic 增长,并实现了 KDP SCF 的快速[001]方向增长.
- 获得的SCF宽度小于10微米,长度为厘米.
- 确定了在金字塔面和镜面上分别生长的临界超度点 (22.40%和41.41%在25°C).
- 飞行机组确认没有表面缺陷,支持二维核化机制.
结论:
- 开发的溶液生长技术使得通过融生长方法无法生产超细KDPSCF成为可能.
- 这些发现为控制KDPSCF生长的二维核化机制提供了洞察力.
- 这种技术为制造基于KDP的先进光学和激光元件打开了道路.
相关概念视频
Crystal Growth: Principles of Crystallization
2.0K
Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
2.0K
Recrystallization: Solid–Solution Equilibria
1.1K
Recrystallization is a purification technique used to separate impurities from solid compounds. In this technique, no chemical reactions occur. Instead, it exploits physical properties only, specifically, the solubility differences between the desired compound and impurities, either at a single temperature or at different temperatures, and under other selected conditions. The solid-solution equilibrium (solubility equilibrium) of each component in the solution represents a binary phase...
1.1K
Solution Equilibrium and Saturation
18.7K
Imagine adding a small amount of sugar to a glass of water, stirring until all the sugar has dissolved, and then adding a bit more. You can repeat this process until the sugar concentration of the solution reaches its natural limit, a limit determined primarily by the relative strengths of the solute-solute, solute-solvent, and solvent-solvent attractive forces. You can be certain that you have reached this limit because, no matter how long you stir the solution, undissolved sugar remains. The...
18.7K


