Robotics

Virtual sensors help aerial vehicles stay aloft when rotors fail

No crystal ball is needed to envision a future that engineers have in mind, one in which air taxis and other flying vehicles ferry passengers between urban locations, avoiding the growing gridlock on the ground below. Companies ...

Energy & Green Tech

Researchers develop long-cycle, high-energy sodium-ion battery

The constantly growing demand for energy storage is driving research and development in battery technology. The sodium-ion battery is a reliable and affordable replacement for lithium-ion batteries. The easy accessibility ...

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Crystal

A crystal or crystalline solid is a solid material whose constituent atoms, molecules, or ions are arranged in an orderly repeating pattern extending in all three spatial dimensions. The scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification. The word crystal is derived from the Ancient Greek word κρύσταλλος (krustallos), meaning both “ice” and “rock crystal”, from κρύος (kruos), “icy cold, frost”.

Most common metals are polycrystals. Crystals are often symmetrically intergrown to form crystal twins.

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