The metal halide structure and the extent of distortion control the photo-physical properties of luminescent zero dimensional organic-antimony(iii) halide hybrids

The structural tunability of 0D Sb Cl based hybrid perovskites and the underlying structural distortion mechanism affecting their emissive properties (PL emission energy, PLQY, Stokes shift) are demonstrated here.

New carbon allotropes derived from nanotubes via a three-fold distortion mechanism

Hexagonal diamond, and new carbon allotropes hP24 and hP36, are derived from carbon nanotubes.

Assumption of Constraining Force to Explain Distortion in Laser Additive Manufacturing

Distortion is a common but unrevealed problem in metal additive manufacturing, due to the rapid melting in metallurgy and the intricate thermal-mechanical processes involved. We explain the distortion mechanism and major influencing factors by assumption of constraining force, which is assumed between the added layer and substrate. The constraining force was set to act on the substrate in a static structural finite element analysis (FEA) model. The results were compared with those of a thermal-mechanical FEA model and experiments. The constraining force and the associated static structural FEA showed trends in distortion and stress distribution similar to those shown by thermal-mechanical FEA and experiments. It can be concluded that the constraining force acting on the substrate is a major contributory factor towards the distortion mechanism. The constraining force seems to be primarily related to the material properties, temperature, and cross-sectional area of the added layer.