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Large scale synthesis of single crystalline tungsten nanowires with extreme aspect ratios
Author(s) -
Hassel Achim Walter,
Milenkovic Srdjan,
Smith Andrew Jonathan
Publication year - 2010
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200983319
Subject(s) - tungsten , materials science , nanowire , eutectic system , dissolution , yield (engineering) , nanotechnology , aspect ratio (aeronautics) , homogeneous , nial , nanoscopic scale , alloy , chemical engineering , metallurgy , composite material , intermetallic , physics , engineering , thermodynamics
One gram of tungsten nanowires – equivalent to 5 billion single wires – was produced by electrochemically processing a directionally solidified eutectic NiAl‐W alloy. Their release is realised by selective dissolution of the matrix with a yield beyond 98%. The nanowires are single crystals, homogeneous in diameter, and have extremely high aspect‐ratios (>1000!). A multitude of potential applications are feasible – including sensing, probing, and high temperature nanotechnology.