• 专利标题:   Controlling electrical conductivity of two-dimensional/three-dimensional composite materials e.g. graphene/diamond composite material by applying external shear strain comprises establishing multiple groups of two-dimensional/three-dimensional composite material structures and applying shear strain.
  • 专利号:   CN114751717-A, CN114751717-B
  • 发明人:   HU N, SU Y, YANG B
  • 专利权人:   UNIV HEBEI TECHNOLOGY
  • 国际专利分类:   C04B111/94, C04B030/00, H01B013/00
  • 专利详细信息:   CN114751717-A 15 Jul 2022 C04B-030/00 202272 Chinese
  • 申请详细信息:   CN114751717-A CN10668535 14 Jun 2022
  • 优先权号:   CN10668535

▎ 摘  要

NOVELTY - Controlling electrical conductivity of two-dimensional/three-dimensional (2D/3D) composite material by applying external shear strain comprises (i) establishing multiple groups of 2D/3D composite material structures according to interface matching of 2D material and 3D material, (ii) performing structural relaxation and optimization on multiple groups of 2D/3D composite material structures, calculating interfacial energy of different 2D/3D composite structure connection methods, and determining metastable structure with lowest interfacial energy, (iii) applying shear strain to metastable structure to obtain a shear strain-stress curve, calculating energy band of metastable structure under different shear strain conditions, and obtaining shear strain-energy band gap relationship, and (iv) controlling electrical conductivity of 2D/3D composite material by applying different shear strains according to shear strain-energy band gap relationship. USE - The method is useful for controlling electrical conductivity of two-dimensional/three-dimensional composite material e.g. graphene/diamond composite material by applying external shear strain. ADVANTAGE - The method: realizes control of the electrical conductivity of the two-dimensional/three-dimensional composite material; reveals the relationship between the applied shear strain and the electrical conductivity of the material; and provides theoretical and technical support for the design and preparation of advanced electrical materials.