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Forschungszentrum Jülich GmbH Wilhelm-Johnen-Straße 52428 Jülich, Germany http://www.fz-juelich.de
Contact Ms Angela Wenzik +49 2461 616048
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Forschungszentrum Jülich GmbH

Es rappelt im Kristall!

Jülicher Physiker entschlüsseln einen Faktor für effiziente Thermoelektrizität

(PresseBox) (Jülich, )
Rappelnde Atompaare verringern die Wärmeleitfähigkeit kristalliner Materialien besonders gut, fanden Physiker des Forschungszentrums Jülich heraus. Schwere, in Kristallen frei schwingende, hantelförmige Gebilde könnten eine Schlüsselfunktion einnehmen bei der Entwicklung von Materialien mit geringer Wärmeleitfähigkeit und gleichzeitig hoher elektrischer Leitfähigkeit. Damit ließe sich der Wirkungsgrad thermoelektrischer Generatoren steigern, die aus Temperaturdifferenzen Strom herstellen. Bisher ungenutzte Abwärme könnte so zunehmend wirtschaftlich interessant werden. Die Ergebnisse werden in der kommenden Ausgabe der renommierten wissenschaftlichen Fachzeitschrift „Physical Review Letters“ veröffentlicht und sind bereits vorab online einsehbar.
„Unsere Erkenntnisse öffnen ganz neue Wege auf der Suche nach immer effizienteren thermoelektrischen Materialien“, freuen sich Dr.

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