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Guided self-assembly on the nanoscale

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Walker-HA-2020-PhD-ThesisThesis12.65 MBAdobe PDFView/Open
Title: Guided self-assembly on the nanoscale
Authors: Walker, Harriet Amelia
Item Type: Thesis or dissertation
Abstract: A novel fabrication technique to print colloidal single-nanoparticle assemblies onto flat surfaces was designed. The mean printing accuracy was found to be 60.8nm and printing yield was found to be 98.1%. The novel technique was utilised to print nanoparticles on an array of surfaces. Changes in the spectral position of peaks in the dark field scattering spectrum of these nanoparticles were indicative of strong optical coupling between nanoparticles and surfaces, likely owing to the lack of adhesion layer between nanoparticle and surface. These changes were supported and further illustrated through computer simulations. Nanocubes printed via this technique were utilised for in situ SERS measurements of hot electron catalysis of halogenated thiophenols. Hot electron generation was also utilised to selectively cleave thiol-bonds on the surface of nanoantennas for nanoparticle placement on gold drop-tie antennas.
Content Version: Open Access
Issue Date: Sep-2020
Date Awarded: Jan-2021
URI: http://hdl.handle.net/10044/1/86617
DOI: https://doi.org/10.25560/86617
Copyright Statement: Creative Commons Attribution NonCommercial Licence
Supervisor: Maier, Stefan
Cortes, Emiliano
Sapienza, Riccardo
Department: Physics
Publisher: Imperial College London
Qualification Level: Doctoral
Qualification Name: Doctor of Philosophy (PhD)
Appears in Collections:Physics PhD theses



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