Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/17405
Title: Complete steric exclusion of ions and proton transport through confined monolayer water
Authors: Gopinadhan, K
Hu, S
Esfandiar, A
Lozada-Hidalgo, M
Wang, FC
Yang, Q
Tyurnina, AV
Keerthi, A
Radha, B
Geim, AK
Issue Date: 21-Dec-2018
Publisher: arxiv
Citation: arxiv, 2018
Abstract: It has long been an aspirational goal to create artificial structures that allow fast permeation of water but reject even the smallest hydrated ions, replicating the feat achieved by nature in protein channels (e.g., aquaporins). Despite recent progress in creating nanoscale pores and capillaries, these structures still remain distinctly larger than protein channels. We report capillaries made by effectively extracting one atomic plane from bulk crystals, which leaves a two-dimensional slit of a few angstroms in height. Water moves through these capillaries with little resistance, whereas no permeation could be detected even for such small ions as Na+ and Cl-. Only protons (H+) can diffuse through monolayer water inside the capillaries. These observations improve our understanding of molecular transport at the atomic scale.
URI: http://bura.brunel.ac.uk/handle/2438/17405
ISSN: http://arxiv.org/abs/1811.09227v1
http://arxiv.org/abs/1811.09227v1
Other Identifiers: http://arxiv.org/abs/1811.09227v1
http://arxiv.org/abs/1811.09227v1
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

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