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Compression‐Modulated Tunable‐Pore Carbon‐Nanotube Membrane Filters
Author(s) -
Li Xuesong,
Zhu Guangyu,
Dordick Jonathan S.,
Ajayan Pulickel M.
Publication year - 2007
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200600652
Subject(s) - membrane , ultrafiltration (renal) , carbon nanotube , materials science , compression (physics) , deformation (meteorology) , carbon fibers , nanotube , chemical engineering , nanotechnology , composite material , chemistry , chromatography , engineering , biochemistry , composite number
Turn on the pressure : Vertically aligned carbon‐nanotube membranes show super‐compressive and elastic properties. The pore size can be dynamically and reversibly controlled by mechanical deformation of the membrane, over ranges useful for ultrafiltration (see picture). The separation of proteins with molecular weights of 14–540 kDa (about 5–20 nm in size) is demonstrated with a single membrane set at different pore sizes by mechanical stress.