Print Email Facebook Twitter High-frequency gas effusion through nanopores in suspended graphene Title High-frequency gas effusion through nanopores in suspended graphene Author Roslon, I.E. (TU Delft Dynamics of Micro and Nano Systems; Kavli institute of nanoscience Delft) Dolleman, R.J. (TU Delft QN/Steeneken Lab; Kavli institute of nanoscience Delft; Rheinisch-Westfälische Technische Hochschule) Licona, H. (Kavli institute of nanoscience Delft; Student TU Delft) Lee, M. (TU Delft QN/Steeneken Lab; Kavli institute of nanoscience Delft) Siskins, M. (TU Delft QN/Steeneken Lab; Kavli institute of nanoscience Delft) Lebius, H. (ENSICAEN Ecole Nationale Superieure d'Ingenieurs de Caen) Madauß, L. (Universität Duisburg-Essen) Schleberger, M. (Universität Duisburg-Essen) Alijani, F. (TU Delft Dynamics of Micro and Nano Systems) van der Zant, H.S.J. (TU Delft QN/van der Zant Lab; Kavli institute of nanoscience Delft) Steeneken, P.G. (TU Delft Dynamics of Micro and Nano Systems; TU Delft QN/Steeneken Lab; Kavli institute of nanoscience Delft) Date 2020 Abstract Porous, atomically thin graphene membranes have interesting properties for filtration and sieving applications. Here, graphene membranes are used to pump gases through nanopores using optothermal forces, enabling the study of gas flow through nanopores at frequencies above 100 kHz. At these frequencies, the motion of graphene is closely linked to the dynamic gas flow through the nanopore and can thus be used to study gas permeation at the nanoscale. By monitoring the time delay between the actuation force and the membrane mechanical motion, the permeation time-constants of various gases through pores with diameters from 10–400 nm are shown to be significantly different. Thus, a method is presented for differentiating gases based on their molecular mass and for studying gas flow mechanisms. The presented microscopic effusion-based gas sensing methodology provides a nanomechanical alternative for large-scale mass-spectrometry and optical spectrometry based gas characterisation methods. Subject OA-Fund TU Delft To reference this document use: http://resolver.tudelft.nl/uuid:f2646c5d-ddb8-4582-8b90-fe09e1d1f430 DOI https://doi.org/10.1038/s41467-020-19893-5 ISSN 2041-1723 Source Nature Communications, 11 (1) Part of collection Institutional Repository Document type journal article Rights © 2020 I.E. Roslon, R.J. Dolleman, H. Licona, M. Lee, M. Siskins, H. Lebius, L. Madauß, M. Schleberger, F. Alijani, H.S.J. van der Zant, P.G. Steeneken Files PDF s41467_020_19893_5.pdf 3.46 MB Close viewer /islandora/object/uuid:f2646c5d-ddb8-4582-8b90-fe09e1d1f430/datastream/OBJ/view