范德瓦尔斯力
结合能
工作(物理)
剥脱关节
范德瓦尔斯半径
粘附
原子力显微镜
材料科学
化学物理
化学
热力学
纳米技术
物理
分子
原子物理学
复合材料
石墨烯
有机化学
作者
Kewei Tang,Weihong Qi,Yaru Wei,Guoliang Ru,Weimin Liu
出处
期刊:Research
[AAAS00]
日期:2022-01-01
卷期号:2022
被引量:8
标识
DOI:10.34133/2022/9765121
摘要
Interlayer van der Waals interactions play an important role in two-dimensional (2D) materials on various occasions. The interlayer binding force is often directly measured and is considered more closely related to the exfoliation condition. However, a binding force database from accurate theoretical calculations does not yet exist. In this work, the critical interlayer binding force and energy are directly calculated for 230 2D materials, which exhibit divergent trends. A linear relationship that links the two quantities with the equilibrium interlayer distance is found and checked. Experiments are carried out for three different materials using atomic force microscopy. The measured forces show a consistent trend with the calculated results, and the estimated binding strengths are of the same order of magnitude as the predicted values. Our work can provide a reliable reference for interlayer adhesion studies and help establish accurate models of exfoliation processes.
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