A high transmission wave-guide wire network made by self-assembly
Year: 2014
Type: article
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.
Source: Nanoscale
DOI: 10.1039/c4nr04485a
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: Soft NanoPhotonics Programme Grant (sNaP), Programmable nano-assembly of plasmonic materials for molecular interactions, Nano-Optics to controlled Nano-Chemistry Programme Grant (NOtCH), Cambridge NanoScience through Engineering to Application Doctoral Training Centre: Assembly of Functional NanoMaterials and NanoDevices
OpenAlex ID: W2149494390