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Laser‐Induced Self‐Assembled Nanostructures on Electron‐Transparent Substrates
Author(s) -
Sachan Ritesh,
Malasi Abhinav,
Yadavali Sagar,
Griffey Blake,
Dunlap John,
Duscher Gerd,
Kalyanaraman Ramki
Publication year - 2015
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201400183
Subject(s) - dewetting , materials science , nanotechnology , carbon fibers , transmission electron microscopy , nanomaterials , nanostructure , mica , thin film , optoelectronics , fabrication , nanosecond , laser , optics , composite material , composite number , physics , medicine , alternative medicine , pathology
Currently, one of the challenges in high‐resolution transmission electron microscopy (TEM) studies of nanomaterials is to make contamination‐free materials in a simple and time‐efficient way. Here, a method is demonstrated that combines nanosecond‐pulsed laser dewetting of thin films with a film float‐off technique to realize nanostructures (NSs) on electron‐transparent substrates in a robust and rapid manner. NSs of metal (Ag) and bimetals (AgCo, AuCo) ranging from 20 to 150 nm are synthesized on thin carbon film deposited on mica substrates. The NS/carbon system is subsequently transferred onto TEM grids by a float‐off process resulting from debonding of the carbon from mica due to their contrasting hydrophobic nature. This process enables the fabrication of different NSs on flexible and electron‐transparent substrates.