Pyroelectricity (from Greek: pyr (πυρ), "fire" and electricity) is a property of certain crystals which are naturally electrically polarized and as a result contain large electric fields. [1] Pyroelectricity can be described as the ability of certain materials to generate a temporary voltage when they are heated or cooled.

Pyroelectricity, development of opposite electrical charges on different parts of a crystal that is subjected to temperature change. First observed (1824) in quartz, pyroelectricity is exhibited only in crystallized nonconducting substances having at least one axis of symmetry that is polar (that.

Pyroelectricity is the electrical response of a polar, dielectric material to a change in temperature. The origin of this effect lies in polar features that are lined up with the same orientation along at least one direction in the material.

Pyroelectricity in Crystalline Materials. Pyroelectric devices are energy conversion devices which convert a temperature difference to or from electricity through changes in material polarization. The pyroelectric effect was first studied by Hayashi in 1912 and by Rontgen in 1914 [3] [40].

Pyroelectricity is a coupled effect that relates a change in temperature to a change in electrical displacement D (with units of C/m2), where p is the pyroelectric coefficient (with units of C/m2 K). Both displacement and the pyroelectric coefficient are vec-tors or first-rank tensors. The pyroelectric coefficient is de-fined by where P

2001年1月1日 · “Pyroelectricity” is defined as the manifestation of the temperature dependence of the spontaneous polarization of certain anisotropic solids. The chapter contains a brief presentation of the two-and-a-half-millennium history of pyroelectricity, a detailed discussion of the fundamentals of the phenomenon, and a description of many of its ...

Pyroelectricity is the property presented by certain materials that exhibit an electric polarization Pi when a temperature variation δΘ is applied uniformly: Pi = piT δΘ. where piT is the pyroelectric coefficient at constant stress.

2022年10月12日 · Recently, pyroelectricity is one of the most studied phenomena in the scientific community due to the various application of pyroelectric materials in electronic devices. This book describes...

2022年9月1日 · This chapter describes the basic concepts of pyroelectricity, history of pyroelectricity, theory of pyroelectricity, simple model of pyroelectric effect, pyroelectric crystal symmetry ...

2017年5月6日 · Pyroelectricity is the property of a material to produce electrical energy when they are subjected to thermal energy change. Pyroelectric crystals are those poses the Pyroelectric effect, that is the ability of crystals to generate electricity when they are heated.