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Formation of Peelable Rough Gold Patterns on an Ionic Liquid Template
Author(s) -
Ohzono Takuya,
Monobe Hirosato,
Fukuda Nobuko,
Fujiwara Masahiro,
Shimizu Yo
Publication year - 2011
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.201002072
Subject(s) - materials science , nanotechnology , plasmon , substrate (aquarium) , fabrication , surface finish , photonics , liquid metal , surface roughness , optoelectronics , composite material , medicine , oceanography , alternative medicine , pathology , geology
The ability to control metal patterns at the micro‐ and nanoscales, along with the development of a simple fabrication method, is important to many applications in the fields of materials science, biological sensing, electronics, and photonics. Herein, a simple approach to fabricating gold micropatterns with controlled roughness is reported. In this approach, gold is evaporated onto a striped liquid micropattern formed on self‐organized microwrinkles. Gold nanoribbons with higher roughness form on the liquid part of the substrate because the deposited gold atoms can diffuse, grow, and aggregate at the liquid–air interface, whereas flat gold films form on the solid part. The rough gold nanoribbons formed on the liquid can then be peeled off through contact with water. The extinction spectrum of the rough gold nanoribbons suggests characteristic surface‐plasmon absorption. This shows the possibility of using rough gold nanoribbons with controlled shape in plasmonic technology.