Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
University of Chinese Academy of Sciences, Beijing, 100049, China.
Adv Mater. 2018 Aug;30(32):e1801313. doi: 10.1002/adma.201801313. Epub 2018 Jun 25.
Discovering materials that exhibit zero linear compressibility (ZLC) behavior under hydrostatic pressure is extremely difficult. To date, only a handful of ZLC materials have been found, and almost all of them are ultrahard materials with densified structures. Here, to explore ZLC in nondense materials, a structural model analogous to the structure of the "Lu-Ban stool," a product of traditional Chinese woodworking invented 2500 years ago, is proposed. The application of this model to borates leads to the discovery of ZLC in AEB O (AE = Ca and Sr) with the unique "Lu-Ban stool"-like structure, which can obtain a subtle mechanical balance between pressure-induced expansion and contraction effects. Coupled with the very wide ultraviolet transparent windows, the ZLC behavior of AEB O may result in some unique but important applications. The applications of the "Lu-Ban stool" model open a new route for pursuing ZLC materials in nondense structural systems.
在静水压力下表现出零线性压缩性（ZLC）行为的材料极难发现。迄今为止，仅发现了少数几种 ZLC 材料，而且几乎所有这些材料都是具有致密结构的超硬材料。在这里，为了在非致密材料中探索 ZLC，提出了一种类似于 2500 年前发明的中国传统木工产品“鲁班凳”结构的结构模型。该模型在硼酸盐中的应用导致了在具有独特“鲁班凳”状结构的 AEB O（AE = Ca 和 Sr）中发现 ZLC，这种结构可以在压力诱导的膨胀和收缩效应之间获得微妙的机械平衡。再加上非常宽的紫外透明窗口，AEB O 的 ZLC 行为可能会带来一些独特但重要的应用。“鲁班凳”模型的应用为在非致密结构系统中追求 ZLC 材料开辟了一条新途径。
