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Unwrapping Core–Shell Nanowires into Nanoribbon‐Based Superstructures
Author(s) -
Pevzner Alexander,
Davidi Guy,
PeretzSoroka Hagit,
Havivi Ehud,
Barkay Zahava,
PopovitzBiro Ronit,
Khatchtourints Artium,
Patolsky Fernando
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201304857
Subject(s) - nanowire , photoresist , etching (microfabrication) , materials science , core (optical fiber) , shell (structure) , layer (electronics) , nanotechnology , isotropic etching , germanium , nanostructure , optoelectronics , composite material , silicon
A prize for the ribbons : High‐quality crystalline semiconducting nanoribbons can be prepared by “unwrapping” core–shell nanowire precursors. For example, Ge nanowires were coated with a Si shell and the top surface was carved by etching whereas the sides were protected by a thin layer of photoresist material. Finally the Ge core was removed selectively by chemical means to give fully opened and flat nanoribbon structures (see picture).