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Helical Mesostructured Tubules from Taylor Vortex‐Assisted Surfactant Templates
Author(s) -
Kim W.J.,
Yang S.M.
Publication year - 2001
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(200108)13:15<1191::aid-adma1191>3.0.co;2-3
Subject(s) - materials science , template , vortex , bromide , pulmonary surfactant , dissolution , micelle , nanotechnology , deposition (geology) , cylinder , chemical engineering , chemistry , mechanics , inorganic chemistry , geometry , physics , engineering , paleontology , mathematics , sediment , aqueous solution , biology
Templates for helix‐structured silica microtubules are generated by subjecting worm‐shaped micelles of cetyltrimethylammonium bromide to so‐called Taylor vortex flow conditions between a rotating and a stationary cylinder at controlled speed. Silica deposition from TEOS and template dissolution produce helical tubules about 100 nm in diameter and a few micrometers long (see Figure), potentially useful for chiral catalysis or optical applications.