Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session M25: Behavior of Liquids Confined on the Nanometer Scale II
11:30 AM–2:30 PM,
Wednesday, March 17, 2021
Sponsoring
Unit:
DCP
Chair: Mark Reed, Yale University
Abstract: M25.00004 : Mechanosensitive conductance of single-digit carbon nanotubes
12:06 PM–12:18 PM
Live
Presenter:
Alice Marcotte
(Laboratoire de Physique de l'Ecole Normale Supérieure)
Authors:
Alice Marcotte
(Laboratoire de Physique de l'Ecole Normale Supérieure)
Timothée Mouterde
(Laboratoire de Physique de l'Ecole Normale Supérieure)
Antoine Niguès
(Laboratoire de Physique de l'Ecole Normale Supérieure)
Alessandro Siria
(Laboratoire de Physique de l'Ecole Normale Supérieure)
Lydéric Bocquet
(Laboratoire de Physique de l'Ecole Normale Supérieure)
In this work [1], we investigate the ionic transport through 2 nm-radius individual multiwalled CNT under the combination of mechanical and electrical forcings. Our findings evidence mechanically activated ionic transport, which takes the form of an ionic conductance which depends quadratically on the applied pressure. This behaviour is rationalized theoretically in terms of the complex interplay between electrical and mechanical drivings, showing that ultra-low friction of water on carbon nanotubes surfaces is a prerequisite to attain mechanically activated transport. The quadratic pressure dependent conductance is reminiscent of similar reports in biological mechanosensitive ion channels, paving the way to new active nanofluidic functionalities inspired by the complex biological machinery.
[1] Marcotte et al., Nature Materials 19,1057-1061 (2020)
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