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Strain‐Induced Reversal of Charge Transfer in Contact Electrification
Author(s) -
Sow Mamadou,
Widenor Ross,
Kumar Ajay,
Lee Seung Whan,
Lacks Daniel J.,
Sankaran R. Mohan
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201107256
Subject(s) - contact electrification , electrification , charge (physics) , strain (injury) , materials science , composite material , transfer (computing) , balloon , mechanics , forensic engineering , electrical engineering , triboelectric effect , engineering , physics , electricity , computer science , anatomy , medicine , quantum mechanics , cardiology , parallel computing
We have contact! Material strain can have a dominating effect on contact electrification. When a deflated (relaxed) balloon is rubbed against teflon, the teflon surface charges positively, but when the same balloon is inflated (strained), the teflon surface charges negatively. This result illustrates that material strain can control contact electrification and alter the driving force of some (yet unknown) charge‐transfer species.