ЧТО ОЗНАЧАЕТ СЛОВО PYROELECTRICITY
Пироэлектричество
Пироэлектричество - это способность некоторых материалов генерировать временное напряжение при нагревании или охлаждении. Изменение температуры изменяет положение атомов немного внутри кристаллической структуры, так что поляризация материала изменяется. Это изменение поляризации приводит к возникновению напряжения на кристалле. Если температура остается постоянной при ее новом значении, пироэлектрическое напряжение постепенно исчезает из-за тока утечки. Пироэлектричество не следует путать с термоэлектричеством: при типичной демонстрации пироэлектричества весь кристалл изменяется от одной температуры к другой, а результат - временное напряжение на кристалле. При типичной демонстрации термоэлектричества одна часть устройства поддерживается при одной температуре, а другая - при другой температуре, а результат - постоянное напряжение на приборе, пока существует разность температур.
Значение слова pyroelectricity в словаре английский языка
Определение пироэлектричества в словаре - это развитие противоположных зарядов на концах оси некоторых гемиедрических кристаллов, таких как турмалин, в результате изменения температуры.
КНИГИ НА АНГЛИЙСКИЙ ЯЗЫКЕ, ИМЕЮЩЕЕ ОТНОШЕНИЕ К СЛОВУ «PYROELECTRICITY»
Поиск случаев использования слова
pyroelectricity в следующих библиографических источниках. Книги, относящиеся к слову
pyroelectricity, и краткие выдержки из этих книг для получения представления о контексте использования этого слова в литературе на английский языке.
1
Physics, Chemistry and Technology of Solid State Gas Sensor ...
Pyroelectricity: A 2300- Year History The phenomenon of pyroelectricity is not
new; it has some 2300 years of history. The first description of the pyroelectric
effect was published by the Greek philosopher Theophrastus (ca. 372-287 B.C.)
in his ...
High Quality Content by WIKIPEDIA articles! Pyroelectricity (from the Greek pyr, fire, and electricity) is the ability of certain materials to generate a temporary voltage when they are heated or cooled.
Jesse Russell, Ronald Cohn,
2012
3
The Beginnings of Piezoelectricity: A Study in Mundane Physics
Pyroelectricity As mentioned, Voigt assumed that like piezoelectricity,
pyroelectricity is due to innerdeformations in the crystals caused by
thermalexpansion. The Curies, R ̈ontgen, and Friedel had already advanced
the hypothesis that ...
Appendix. 4. Pyroelectricity. and. the. Electrocaloric. Effect. Table 1. Papers
presenting physical properties of specific materials for. Thermal changes in the
nonzero polarization of ferroelec- trics are described by the pyroelectric effect
and its ...
Carol Zwick Rosen, Basavaraj V. Hiremath, Robert Everest Newnham,
1992
5
Systematic Study of
Pyroelectricity. Ferroelectricity and ...
The relation between ferroelectricity and pyroelectricity in the perovskites is explored using Devonshire's phenomenological theory of ferroelectricity and a new microscopic theory obtained by generalizing the conventional molecular field ...
M. I. Bell, P. M. Raccah, BELFER GRADUATE SCHOOL OF SCIENCE NEW YORK.,
1975
Pyroelectricity. The pyroelectric effect is defined as the change in spontaneous
polarisation, Ps, as a function of temperature, T. The pyroelectric coefficient, p, is
mathematically defined as shown in equation 1.4. p1⁄4 dPs dT ð1:4Þ The ...
Duncan W. Bruce, Dermot O'Hare, Richard I. Walton,
2011
CONCLUSIONS AND SOME SPECULATIONS We have two major objectives in
this chapter: (1) to concisely summarize the physics of pyroelectricity and closely
related effects and describe the techniques for measuring them; and (2) to ...
8
Mechanism of
Pyroelectricity in Polyvinylidene Fluoride Films
The objectives of this study were the exploration of the mechanisms(s) of pyroelectricity in polymers in order to achieve the highest possible pyroelectric coefficients with polar polymers, a determination of whether or not polyvinylidene ...
K. Takahashi, M. M. Labes, R. E. Salomon,
1978
9
A Study of the Mechanism of
Pyroelectricity in Polymer Films
A study was undertaken of both theoretical and experimental aspects of the phenomenon of pyroelectricity in polymer films, focussing on polyvinylidene fluoride.
B. Oh, A. I. Baise, R. E. Salomon,
1975
10
Pyroelectricity and Piezoelectricity in Nylon 11
Pyroelectric and piezoelectric properties of poly(vinylidene fluoride) have been widely reported in the literature. Investigations on similar properties in other classes of polymers have been relatively restricted.
Morton H. Litt, Che-hsiung Hsu, P. Basu,
1976
НОВОСТИ, В КОТОРЫХ ВСТРЕЧАЕТСЯ ТЕРМИН «PYROELECTRICITY»
Здесь показано, как национальная и международная пресса использует термин
pyroelectricity в контексте приведенных ниже новостных статей.
Kansai University and Teijin develop first piezoelectric fabrics for …
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Apple Granted Patents for a Cellular Data Connected Smart Pen, the …
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Harvesting free energy from the environment with polymer magic
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Will Apple iPen beat Galaxy S4?
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Smaller is Better – Understanding Pyroelectric Nanomaterials
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Feeling the heat of pyroelectricity
Engineered pyroelectric materials represent a powerful approach to innovative applications in areas such as renewable energy and the development of new ... «nanotechweb.org, Июн 12»
Killer crystals turn pyroelectricity on bacteria
The crystal powders, which convert warmth into electrical energy and then chemical energy via the pyroelectric effect, could one day be used to disinfect air or ... «Chemistry World, Мар 12»
The band of health
... (pyroelectricity) or when pressure is applied to its surface (piezoelectricity); your body naturally emits heat which warms the power band and thus activating the ... «Daily News & Analysis, Фев 12»
Murata Tactile Controller TV remote hands-on (video)
The company's prototype remote uses touch-pressure pads and pyroelectricity to analyze the position of a piezoelectric film. In English: a plastic film produces ... «Engadget, Окт 11»
Bendable Remote Will Control Your TV
Ordinarily any piezoelectric substance is also subject to another effect called “pyroelectricity,” when a change in temperature creates a current. The problem is ... «Discovery News, Сен 11»