The buckling of a thin elastic film bound to a compliant substrate is studied: we analyze the different patterns that arise as a function of the biaxial residual compressive stress in the film. We first clarify the boundary conditions to be used at the interface between film and substrate. We carry out the linear stability analysis of the classical pattern made of straight stripes, and point ou...

UNLABELLED We perform first-principles calculations of mechanical and electronic properties of silicene under uniaxial strains. Poisson's ratio and the rigidity of silicene show strong chirality dependence under large uniaxial strains. The ultimate strains of silicene with uniaxial strain are smaller than those with biaxial strain. We find that uniaxial strains induce Dirac point deviation from...

The buckling of graphene sheets on substrates can significantly degrade their performance in materials and devices. Therefore, a systematic investigation on the buckling behavior of monolayer graphene sheet/substrate systems is carried out in this paper by both molecular mechanics simulations and theoretical analysis. From 70 simulation cases of simple-supported graphene sheets with different s...

To engineer tunable thin-film materials, the accurate measurement of their mechanical properties is crucial. However, characterizing elastic modulus with current methods particularly challenging for sub-micrometer thick films and hygroscopic materials because they are highly sensitive to environmental conditions most require free-standing which difficult prepare. In this work, we directly compa...

174 LLE Review, Volume 79 Owing to its excellent homogeneity and low-intrinsic absorption properties, fused silica remains the preferred material for high-power laser applications over a wide wavelength range, but especially in the UV. In particular, large-aperture glass and excimer lasers, such as Nova, Beamlet, OMEGA, NIKE, and, in the foreseeable future, the National Ignition Facility (NIF),...

This paper studies the post-local buckling behaviour of steel plates in concrete-filled thin-walled steel tubular columns under biaxial loading using the finite element method. Geometric and material nonlinear finite element analyses are undertaken to investigate the post-local buckling strengths of imperfect steel plates under stress gradients. Based on the results obtained from the nonlinear ...

Strain engineering has arisen as a powerful technique to tune the electronic and optical properties of two-dimensional semiconductors like molybdenum disulfide (MoS2). Although several theoretical works predicted that biaxial strain would be more effective than uniaxial band structure MoS2, direct experimental verification is still missing in literature. Here we implemented simple setup allows ...