Liquid crystal takes page from steel in surprising phase transition

A type of transformation best known for hardening steel and enabling shape-memory alloys may also occur in a much softer class of materials, according to new research from Rice University. Researchers in the departments of chemistry and chemical and biomolecular engineering and at the Smalley-Curl Institute at Rice have shown that an organic semiconductor can transform from a liquid crystal into a solid crystal through a rapid, highly coordinated process resembling a martensitic transformation—a phenomenon traditionally associated with changes between two solid crystalline structures.