Pyroelectricity can be described as the ability of certain materials to generate a temporary voltage when they are heated or cooled. [2][3] The change in temperature modifies the positions of the atoms slightly within the crystal structure, so that the polarization of the material changes.

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 effect in which some polar dielectric materials spontaneously change their polarization when their temperature is changed [171–173] or release charges at the surface of a material when its temperature fluctuates.

2005年8月1日 · One of the least-known properties of solid materials, pyroelectricity is rigorously defined as the temperature dependence of the spontaneous polarization in certain anisotropic solids. 1–6 To appreciate the meaning of that definition and the nature of the pyroelectric effect, consider a simple example: a thin, parallel-sided sample of material, ...

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].

Pyroelectric energy conversion can be divided into two categories, namely, (i) linear pyroelectric conversion and (ii) solid state thermodynamic cycles. The first category of pyroelectric energy harvesting consists of connecting a pyroelectric material to a resistive electrical load and subjecting it to cyclic temperature fluctuations.

In 1824 David Brew-ster, famous for his work in optics, was the first author to use the term “pyroelectricity.” One of the materials he studied was a “tartrate of soda and potash”—Rochelle salt—the same material in which Joseph Valasek discov-ered ferroelectricity almost exactly a …

2001年1月1日 · “Pyroelectricity” is defined as the manifestation of the temperature dependence of the spontaneous polarization of certain anisotropic solids.

2024年5月27日 · The pyroelectric effect is a unique phenomenon where certain materials generate an electric charge in response to a change in temperature. This effect is intrinsic to certain types of crystals, ceramics, and biological materials, which possess a natural polarization.

2023年10月18日 · Pyroelectricity is a property exhibited by certain materials in which they generate an electric charge or voltage in response to changes in temperature. This effect occurs when pyroelectric materials undergo heating or cooling, resulting in a temporary electric polarization within the material.