Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session T00: Poster Session III (1pm-4pm PST)
1:00 PM,
Thursday, March 9, 2023
Room: Exhibit Hall (Forum Ballroom)
Sponsoring
Unit:
APS
Abstract: T00.00267 : The impact of asperity shape and gradient elasticity in flexoelectric/triboelectric contacts
Presenter:
Karl P Olson
(Northwestern University)
Author:
Karl P Olson
(Northwestern University)
Here, the model is used to investigate some critical questions related to the contact mechanics of triboelectricity: how important the shape of the asperities is and when gradient elasticity must be considered. The results indicate that considering asperity shape, gradient elasticity, or both is essential in some cases and practically insignificant in others. Additionally, we show that how the key electromechanical quantities scale with the contact force and geometry of the asperity is dependent on the asperity shape. This provides insight into the fundamentals of triboelectricity and presents a clear challenges for a new set of experiments.
[1] Mizzi, C.A.; Marks, L.D. “When Flexoelectricity Drives Triboelectricity”. Nano Lett. 2022, 22, 3939-3945.
[2] Olson, K.P.; Mizzi, C.A.; Marks, L.D. “Band Bending and Ratcheting Explain Triboelectricity in a Flexoelectric Contact Diode”. Nano Lett. 2022, 22, 3914-3921.
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