Tunable elastic wave bandgaps by strain engineering of multilayered van der Waals metamaterials.

Multilayered van der Waals (vdW) metamaterials exhibit exceptional mechanical and thermal properties, with the ability to tune these characteristics based on material composition, stacking sequences, and the number of layers. Due to the extremely small scale of these structures, the influence of vibration and noise becomes significant. This study uses molecular dynamics (MD) simulations to investigate the bandgap characteristics of elastic waves in multilayered h-BN/MoS vdW metamaterials.

Preparation and characterization of micro/nanocellulose reinforced PVDF/wood composites.

Polyvinylidene fluoride (PVDF) is commonly used in the chemical, electronic, and petrochemical industries because of its chemical and physical attributes. This study aimed to make novel PVDF-based composite with a high loading of silanized wood powder and micro/nanocellulose fibers, where glycerol acts as both a dispersant and a plasticizer all-in-one composite application for the first time. The purpose was also extended to systematically investigate their mechanical properties and melt flow.