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Auxetic materials—those that expand laterally when stretched—can possess enhanced mechanical properties, including shear modulus, indentation resistance, and fracture toughness. Here the authors show that 1T-type crystalline 2D transition metal dichalcogenides exhibit intrinsic in-plane negative Poisson’s ratios.
Pore structure plays an important role in dictating gas storage performance for nanoporous materials. Here, Smit and colleagues develop a topological approach to quantify pore structure similarity, and exploit the resulting descriptor to screen for materials that possess structural similarities with top-performers.
Quasicrystals promise exciting technological advances in optical devices, but their formation mechanism is yet not fully understood. Here, the authors describe a two-dimensional dodecagonal fullerene quasicrystal, forming on a Pt3Ti(111)-surface due to the complex adsorption-energy landscape.
Heat conduction at the nanoscale is unlike macroscopic diffusion and phonons can travel in straight lines without dissipation. Here Anufriev et al. show that heat conduction can be spatially directed in nanostructured silicon and exploit this effect to concentrate heat into a focal point.
The surface oxygen storage capacity is an important metric of catalytic activity, but its dependence on strain is not well characterized. Here, the authors show the surface oxygen nonstoichiometry in coherently strained CeO2-δ films increases non-monotonically with biaxial strain.