凯发

2D materials are only one atom thick, which makes the system have quantum effects in the out of plane direction, bringing a series of excellent mechanical, thermal and electrical properties. To take advantage of these properties at the macro scale, large-scale synthesis and assembly of 2D materials is essential. The past decade witnessed the development of 2D material assemblies, which possess super elasticity, low density, and high surface ratio. Especially, unlike traditional material assemblies which usually have poor conductivity, 2D material assemblies inherit the excellent electrical properties of 2D materials, so their applications in supercapacitors, elastic electronic devices, and strain sensors have attracted extensive attention. In traditional materials, modulus and conductivity are positively correlated with density, while it may not be true for 2D material assemblies due to the fact that 2D material assemblies have multiple degrees of freedom, such as the number of layers of 2D materials, the characteristic size of microstructures, and the assembly ways. Therefore, it is urgent to establish a mechanical electrical coupling theory for 2D material assembly, clarify the relationship between structure, deformation and electrical transport properties, and systematically predict the properties of this material, so as to optimize the design.