某些有机物的晶体受热熔化后,并不直接从固态转变为液态,而是要经过一系列的“介晶相”态(mesophase),这种介于固态和液态之间的中间相态既有象液体一样的流动性和连续性,又有象晶体一样的各向异性,就是说它具有象液体一样的无序性和象晶体一样的有序性,这种有序流体就是液晶。 Some organic crystals melt upon heating and do not convert directly from the solid to the liquid, but rather through a series of “mesophase” states, intermediate between the solid and liquid phases, both Liquid-like fluidity and continuity, as well as crystal-like anisotropy, that it has the same liquid-like disorder and crystal-like order, this ordered fluid is liquid crystal.