Introduction to Soft Matter in Brief

Soft-matter quasicrystals are observed in liquid crystals, colloids, polymers and surfactants, which belong to some kinds of soft matter. Soft matter is the common title, introduced by de Gennes [1] in 1991, of liquid crystals, colloids, polymers, foams, emulsions, surfactants, biomacromolecules, etc.; they are neither ideal solid nor simple fluid, but present characters of both solid and fluid, belonging to an intermediate phase between isotropic fluid and ideal solid macroscopically.