Contact Analysis of A Photonic Crystal with Periodic Nanostructures Indented by A Rigid Sphere
Longqiu Li (Harbin Institute of Technology)
Contact Mechanics
Tue 4:20 - 5:40
Barus-Holley 161
Photonic crystal, which is composed of periodic nanostructures and can be used to fabricate selective optoelectronic devices and optical fibers, is one of the most promising platforms. The periodic nanostructures not only affect the optical properties, but also determine the mechanical properties of photonic crystal. The prediction and characterization of mechanical properties are crucial to optimize the structure of the photonic crystal in order to sustain mechanical stresses during their integration process or in working conditions. In this work, the finite element method (FEM) and micromechanics theory are employed to investigate the mechanical properties of photonic crystal, such as elastic modulus, shear modulus and hardness. A finite element model, which is a deformable photonic crystal with periodic structure indented by a rigid sphere, is provided to investigate the effect of heterogeneously periodic nanostructures parameters on mechanical properties, i.e., material properties, nanostructure diameters and porosity. The contact force and the contact area are presented as a function of the contact interference for different periodic nanostructures. A comparison between the theoretical and numerical results is also provided.