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Preparation of Binary and Ternary Deep Eutectic Systems
Published on: October 31, 2019
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在Eutectic滴中进行预固化
Bene Poelsema1, Zhiguo Zhang1, Harold J W Zandvliet1
1Physics of Interfaces and Nanomaterials, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands.
Physical review letters
|September 22, 2023
概括
预固化,与预化相反,影响了- (Ge-Pt) 滴滴的运动. 滴滴运动方向意外地变化,与基板保持一致.
科学领域:
- 材料科学 材料科学 材料科学
- 表面科学是一门学科.
- 物理 物理学 物理
背景情况:
- 预化描述了固体在低于化温度的表面破坏.
- 预固化是发生在液体-固体界面的类似现象,影响材料的行为.
- 了解接口现象对于控制材料属性和过程至关重要.
研究的目的:
- 为了研究 (Ge) 基板上的-白金 (Ge-Pt) 滴滴中预固化的现象.
- 为了确定预凝固对这些水滴的热梯度驱动运动的影响.
- 探索滴滴形态与运动方向之间的关系.
主要方法:
- 使用具有 (110) 表面方向的 (Ge) 基板.
- 在受控的热梯度下观察微米大小的Eutectic Ge-Pt滴的行为.
- 分析滴滴运动方向和形状的变化,在接近和高于水温度 (T_C) 的温度下.
主要成果:
- 在远高于T_C的温度下,不管基板的方向如何,滴滴都向热源移动.
- 在高于T_C的90K发生了明显的转变,滴滴表现出强烈的偏好沿着[001]光方向运动.
- 这种定向运动伴随着滴水形状的变化,从紧到沿着[001]方向延长.
- 观察到的行为归因于液体-固体界面的预固化效应.
结论:
- 预固化显著影响了Eutectic Ge-Pt滴在Ge(110) 基板上的方向运动.
- 这种现象决定了滴滴运动从热友运动到异能运动的过渡.
- 这一发现为界面现象及其在物质运输中的作用提供了新的见解.
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