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A high transmission wave-guide wire network made by self-assembly.

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Salvatore, Stefano 
Philpott, Julian 
Stefik, Morgan 
Wiesner, Ulrich 

Abstract

Polymer self-assembly of a 3D continuous gyroid morphology was replicated into a network consisting of hollow gold struts. This was achieved by first replicating a gyroid structured film into nickel. The Ni network was employed as an electrode for electrochemical Au deposition, followed by the removal of Ni. The resulting hollow network of plasmonic gold exhibited a substantial optical transmission enhancement by a factor of nearly 3, compared to a network of full Au struts. The overall transmission across the hollow wave-guide morphology depends sensitively on the wall-thickness of the hollow struts down to 1 nm. The dramatic transmission increase arises from an interplay of three mechanisms: (1) the additional number of modes propagating through the wave-guide structure, (2) the increased efficiency of light in-coupling, and (3) a reduction of dissipation by decreasing the Au-volume experienced in plasmon mode propagation.

Description

Keywords

0306 Physical Chemistry (incl. Structural)

Journal Title

Nanoscale

Conference Name

Journal ISSN

2040-3364
2040-3372

Volume Title

7

Publisher

Royal Society of Chemistry
Sponsorship
Engineering and Physical Sciences Research Council (EP/G060649/1)
Engineering and Physical Sciences Research Council (EP/L027151/1)
European Research Council (320503)
Engineering and Physical Sciences Research Council (EP/K028510/1)
Engineering and Physical Sciences Research Council (EP/G037221/1)
We acknowledge the EPSRC EP/G060649/1, the Doctoral Training Centre NanoDTC EP/ and ERC LINASS 320503 for funding.