Stanford Ovshinsky pioneered the field of amorphous (disordered or structureless) materials that can be reversibly changed between amorphous and crystalline phases by an energy source, such as electricity or a laser beam. The phase change produces a...

Solid substances fall into two general classes, crystalline and amorphous. Those whose atoms show long-range order, like the squares on a chessboard or the loops in a chain-link fence, are crystalline; those whose atoms are arranged in no particular,...

Without definite or fixed shape or structure. In relation to a mineral it refers to one without a crystalline...

An amorphous solid is a solid in which there is no long-range order of the positions of the atoms. (Solids in which there is long-range atomic order are called crystalline solids or morphous). Most classes of solid materials can be found or prepared in...