11.   That allows them to be melted and solidified without the walls of a vessel either contaminating them or affecting their crystalline structure, researchers said.

12.   The flood of very high-energy neutrons produced by hydrogen fusion penetrates metal and disrupts its crystalline structure, causing it to expand and become dangerously brittle.

13.   They also convey the crystalline structure of rock.

14.   This deep-sea warming converted ice-like solid methane locked in crystalline structures in the sea-floor sediments into gaseous form.