ABSTRACT
During the last decades important progress has been made in creating artificial pyroelectric materials, usually in the form of a thin film, out of gallium nitride (GaN), caesium nitrate (CsNO3), polyvinylidene fluorides (PVDF and copolymers), derivatives of phenylpyrazine cobalt phthalocyanine and other materials. The main industrial uses are linked to the development of temperature sensors, presence detectors, humidity, leaks or other phenomena that go hand-in-hand with temperature changes (Fig. 8.1). Their use in medical devices is also notable as the following examples will show.
