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Elektrisierender Kontakt: Gleichartige Stücke von Isolatoren mit Dicken in der Größe von Atomen trennen eine Ladung Q, wenn sie in Kontakt gebracht und wieder getrennt werden. Bei wiederholten Kontakten steigt die Größe der getrennten Ladung monoton (siehe Bild). Ein Modell erklärt diese Phänomene anhand von Fluktuationen in der Zusammensetzung der scheinbar identischen Kontaktoberflächen auf molekularer...
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