Hierarchical mechanical metamaterials built with scalable tristable elements for ternary logic operation and amplitude modulation

INTRODUCTION Mechanical metamaterials (1–16) represent a type of artificial materials usually consisting of periodic microstructures whose architectures are carefully designed to offer mechanical properties that surpass those of conventional materials. These architected metamaterials mainly leverage the spatial motions, extreme deformations, multiple equilibrium states, and shape morphing of microstructures to obtain […]

Warp Drive Is No Longer Science Fiction

Einstein’s theory of general relativity puts a speed limit on all matter in the universe, creating a barrier preventing acceleration from below to above the speed of light. However, an independent group of scientists, inventors, and engineers called Applied Physics recently proposed the first model for a physical warp drive, […]