Graphene gas pumps
Dejan Davidovikj (TU Delft - Applied Sciences, TU Delft - Applied Sciences)
Damian Bouwmeester (Student TU Delft)
Herre S.J. Van Der Zant (TU Delft - Applied Sciences)
Peter G. Steeneken (TU Delft - Mechanical Engineering, TU Delft - Applied Sciences)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
We report on a pneumatically coupled graphene pump system, comprising two cylindrical cavities of 3 femtoliter connected by a narrow trench, all covered by a thin few-layer graphene membrane. Local electrodes at the bottom of each cavity enable electrostatic pressure control and manipulation of gas flow through the channel. Using laser interferometry, we measure graphene displacement as a function of driving amplitude and frequency, thus providing proof-of-principle for using graphene membranes to pump attoliter quantities of gases and demonstrating pneumatic actuation at the nanoscale.