Carbon Clathrates as Strong Lightweight Structures
作者： Jianyang Wu , Zhisen Zhang , Ke Xu , Jinghui Zhu , Xuezheng Cao
DOI: 10.1016/J.IJMECSCI.2021.106509
关键词: Materials science 、 Carbon 、 Diamond 、 Tension (physics) 、 Isotropy 、 Anisotropy 、 Shear (sheet metal) 、 Ultimate tensile strength 、 Composite material 、 Ab initio quantum chemistry methods
摘要: Abstract Clathrates are fully-sp3 cage-like three dimensional (3D) structures that offer unique mechanical and electronic properties. Here, the properties of Type-I-C46, Type-II-C34 Type-H-C34 carbon clathrates under uniaxial shear loads examined by means ab initio calculations. It is predicted those show distinct anisotropy in their ideal tensile/shear strengths critical strains, but isotropy Young's moduli. Intriguingly, maximum tensile exceed heavyweight diamond directional load, moduli comparable to diamond. Those deformability load-bearing bond configurations, resulting Moreover, all investigated intrinsically indirect semiconductors, can be greatly tuned tension strains. As a consequence, potentially utilized as lightweight strong engineering electromechanical devices.
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