Templated assembly of metal nanoparticle films on polymer substrates

We report on directed self-assembly of ordered, vapor-deposited gallium nanoparticles on surface-relief-structured polymer substrates. Grating templates impose periodic order in one dimension, most effectively when the grating half-period is of the order of the mean unperturbed center-to-center part...

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Bibliographic Details
Published in:Applied physics letters 2016-12, Vol.109 (26)
Main Authors: Waters, R. F., Ohtsu, A., Naya, M., Hobson, P. A., Macdonald, K. F., Zheludev, N. I.
Format: Article
Language:English
Subjects:
Applied physics
Coalescing
Gallium
Liquid phases
Nanoparticles
Polymer films
Polymers
Self-assembly
Substrates
Vapor deposition
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Summary:We report on directed self-assembly of ordered, vapor-deposited gallium nanoparticles on surface-relief-structured polymer substrates. Grating templates impose periodic order in one dimension, most effectively when the grating half-period is of the order of the mean unperturbed center-to-center particle spacing for a given mass-thickness of Ga. Self-organized order also emerges in the perpendicular direction as a consequence of the liquid-phase particles' nucleation, growth, and coalescence on the ridges of the grating pattern in relative isolation from the adjacent slots, and vice versa.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4973202