Method of preparing a pyroelectric mixture and pyroelectric device

US5833833A · kind A · utility

Assignee

• DEUTSCHE TELEKOM AG · DE

Inventors

• Wolfgang Dultz · Frankfurt am Main, DE
• Sergei Yablonsky · Moskovskiy, RU
• Eduardo Arturo Soto Bustamante · Darmstadt, DE
• Leonid A. Beresnev · Dayton, US
• Lev Nicolaevich Blinov · Saint Petersburg, RU
• Wolfgang Haase · Reinheim, DE
• Yuri Galyametdinov · городской округ Казань, RU

Key dates

• Filing date: Dec 20, 1996
• Grant date: Nov 10, 1998
• Expiry date: Dec 20, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S310/80

Abstract

A method of preparing a pyroelectric mixture, especially for pyroelectric and piezoelectric components. At least two compounds are mixed in a prescribed ratio. One compound contains polymerizable and preferably achiral liquid-crystal monomers and the other a preferably achiral liquid-crystal polymer or copolymer. Each compound also contains hydrogen-bridging substituents. The mixture is heated to above its specific vitrification point. An electric field is applied to polymerize the monomer and polarize the mixture. The mixture is cooled to below its specific glass transition point with the field still present.