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The Use of Polyethyleneimine to Control the Growth‐Front Morphology of Electrochemically Deposited Gold Nanowires for Engineered Nanogap Electrodes
Author(s) -
DaSilva Manuel,
Schneider Matthew M.,
Wood Daniel S.,
Kim BongJoong,
Stach Eric A.,
Sands Timothy D.
Publication year - 2009
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.200900379
Subject(s) - nanowire , materials science , electrochemistry , electrolyte , electrode , anode , nanotechnology , porosity , chemical engineering , chemical mechanical planarization , plating (geology) , template , morphology (biology) , layer (electronics) , composite material , chemistry , geophysics , geology , engineering , biology , genetics
Polyethyleneimine (PEI) is utilized in an electrolytic bath for the planarization of electrodeposited nanowire growth fronts in porous anodic alumina templates. The addition of highly branched, low‐molecular‐weight PEI to the plating bath also provides improved uniformity in the distribution of nanowire growth rates from pore to pore and allows for a more precise control over the electrochemical growth process.