Jun Sun

TL;DR: A nanostructuring strategy is reported that achieves Mo alloys with yield strength over 800 MPa and tensile elongation as large as ~40% at room temperature and a general pathway for manufacturing dispersion-strengthened materials with both high strength and ductility.

TL;DR: A ‘stimulated slip’ model is developed to explain the strong size dependence of deformation twinning in crystals, and the sample size in transition is relatively large and easily accessible in experiments, making the understanding of size dependence relevant for applications.

TL;DR: Atomistic simulations reproduce the experimental observations of layer-dependent friction and transient frictional strengthening on graphene and reveal that the evolution of static friction is a manifestation of the natural tendency for thinner and less-constrained graphene to re-adjust its configuration as a direct consequence of its greater flexibility.

TL;DR: It is shown how the use of machine learning coupled to optimization methods can accelerate the discovery of new Pb-free BaTiO3 (BTO-) based piezoelectrics with large electrostrains with Landau theory and insights from density functional theory.

TL;DR: It is found that high-quality membranes of barium titanate are surprisingly flexible and super-elastic and these films accommodate large strains through dynamic evolution of nanodomains during deformation, important for developing more robust flexible devices.