슈퍼 다이아몬드
과학동아 1990년 10호
Carbon atoms do not always pack together in the closet possible arrangement, however. They are loosely packed in coal, coke and soot, for instance. They are also loosely packed in graphite (the "lead" of lead pencils). However, if a piece of graphite, say, is heated to a high temperature so that the atoms can rearrange themselves, and is also put under huge pressures so that the atoms are ...