Elastic Constants of Diamond

The Elastic Constants of Anisotropic Materials

“…Another supersonic method has been applied by Bhagavantam and co-workers (8,9,10). The crystalline specimen in the form of a pla, te is excited by a quartz wedge driven by alternating current of variable frequency, thus providing a continuous supersonic spectrum.…”

“…s'34' is then a maximum, and, for a specimen of circular cross section, the x' and y' axes are chosen so that these conditions are fulfilled (i.e., the plane of the torsion coupled bending is taken as the x's' plane). 8 Table II for calculating Young's modulus from the results of static experiments (Eqs. (2.5) -(2.8)) are equally applicable whether the material is isotropic or while in the hexagonal system,…”

Elastic constants of apatite

“…1 It is now applied to the interesting case of apatite, a crystal belonging to the hexagonal system, and the results given in the present paper~ 2 A suitable new method was developed and had been reported earlier.…”

An Ab Initio Study of Lithization of Two-Dimensional Silicon–Carbon Anode Material for Lithium-Ion Batteries

“…Atomic force microscopy showed that a thin stack of graphene layers (fewer than five) has a Young's modulus of about 0.5 TPa, whereas a Young's modulus ~1 TPa corresponds to monolayer graphene [13]. The mechanical properties of graphene are not inferior to those of diamond, for which Young's modulus is in the range from 0.41 to 0.59 TPa [14,15]. Thus, bilayer graphene can serve as a solid base for silicene when used as the LIB anode material.…”