One application might help build better electronics. Electronics manufacturers such as Nitronex Corporation, which donated the piezoelectric materials used in the study, make devices grown out of gallium nitride (GaN) and aluminum nitride (AlN), which are grown on a substrate and consist of layers of very thin films.
Chin(noun) the lower extremity of the face below the mouth; the point of the under jaw. Chin(noun) the exterior or under surface embraced between the branches of the lower jaw bone, in birds.
Definition of face. 1  1a : the front part of the head that in humans extends from the forehead to the chin and includes the mouth, nose, cheeks, and eyesb : the face as a means of identification : countenance would know that face anywhere. 2  2 archaic : presence, sight.