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Author Esfandiar, A. ♦ Yang, Q ♦ Tyurnina, A. V. ♦ Lozada-Hidalgo, M. ♦ Gopinadhan, Kalon ♦ Keerthi, A. ♦ Wang, F. C. ♦ Hu, S. ♦ Radha, B. ♦ Geim, A. K.
Source IIT Gandhinagar
Content type Text
Publisher Science
Language English
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.
Learning Resource Type Article
Publisher Date 2019-01-01
Journal Science
Volume Number 363
Issue Number 6423
Starting Page 145
Ending Page 148


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