Laser‐Induced Self‐Assembled Nanostructures on Electron‐Transparent Substrates |
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| Authors: | Ritesh Sachan Abhinav Malasi Sagar Yadavali Blake Griffey John Dunlap Gerd Duscher Ramki Kalyanaraman |
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| Affiliation: | 1. Material Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA;2. Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, USA;3. Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN, USA;4. Department of Biology, University of Tennessee, Knoxville, TN, USA |
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| Abstract: | 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. |
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| Keywords: | carbon metal dewetting nanoparticle surface plasmon thin film |
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