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Fabrication of Clean Nanogaps Using a Combined Electrochemical–Chemical Method
Author(s) -
Kervennic YannVaï,
Kubatkin Sergey
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.200900908
Subject(s) - fabrication , isotropic etching , materials science , nanotechnology , etching (microfabrication) , electrochemistry , nanoparticle , iodine , electrode , metallurgy , chemistry , medicine , alternative medicine , layer (electronics) , pathology
Fabrication of clean nanogaps is achieved using combined electrochemical/chemical etching of microfabricated gold wires in an iodine‐based solution. In contrast to simple chemical etching, all visible spurious metal grains are removed while the gap is forming (see image). Obtained gaps have a controlled size between 1 and 10nm, which is suitable to connect small molecules or nanoparticles.