Chirality is the breaking of reflection and inversion symmetries. Simply put, it is when an object’s mirror images cannot be superimposed over each other. A common example are your two hands—while mirror images of each other, they can never overlap. Chirality appears at all levels in nature and is ubiquitous.
Click here for original story, Truly chiral phonons observed in three-dimensional materials for the first time
Source: Phys.org