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Aligned platinum nanowire networks from surface-oriented lipid cubic phase templates

Aligned platinum nanowire networks from surface-oriented lipid cubic phase templates
Aligned platinum nanowire networks from surface-oriented lipid cubic phase templates
Mesoporous metal structures featuring a bicontinuous cubic morphology have a wide range of potential applications and novel opto-electronic properties, often orientation-dependent. We describe the production of nanostructured metal films 1–2 microns thick featuring 3D-periodic ‘single diamond’ morphology that show high out-of-plane alignment, with the (111) plane oriented parallel to the substrate. These are produced by electrodeposition of platinum through a lipid cubic phase (QII) template. Further investigation into the mechanism for the orientation revealed the surprising result that the QII template, which is tens of microns thick, is polydomain with no overall orientation. When thicker platinum films are grown, they also show increased orientational disorder. These results suggest that polydomain QII samples display a region of uniaxial orientation at the lipid/substrate interface up to approximately 2.8 ± 0.3 ?m away from the solid surface. Our approach gives previously unavailable information on the arrangement of cubic phases at solid interfaces, which is important for many applications of QII phases. Most significantly, we have produced a previously unreported class of oriented nanomaterial, with potential applications including metamaterials and lithographic masks.
2040-3364
2850-2856
Richardson, S.J.
73affed1-6373-4220-bb41-b0af4fb54fc5
Burton, M.R.
4a0d87d4-48b8-46bb-8b4d-3b3cf754563b
Staniec, P.A.
b4aaf98f-7fbd-4924-9388-9e59543dd150
Nandhakumar, I.S.
e9850fe5-1152-4df8-8a26-ed44b5564b04
Terrill, N.J.
61528f5b-7d42-4823-b87f-e6018b220b26
Elliott, J.M.
7f323ba1-3e5a-471c-8088-54c5dacc81a9
Squires, A.M.
b61b4cfb-30ac-4d4c-9d9b-9d4b72b55c82
Richardson, S.J.
73affed1-6373-4220-bb41-b0af4fb54fc5
Burton, M.R.
4a0d87d4-48b8-46bb-8b4d-3b3cf754563b
Staniec, P.A.
b4aaf98f-7fbd-4924-9388-9e59543dd150
Nandhakumar, I.S.
e9850fe5-1152-4df8-8a26-ed44b5564b04
Terrill, N.J.
61528f5b-7d42-4823-b87f-e6018b220b26
Elliott, J.M.
7f323ba1-3e5a-471c-8088-54c5dacc81a9
Squires, A.M.
b61b4cfb-30ac-4d4c-9d9b-9d4b72b55c82

Richardson, S.J., Burton, M.R., Staniec, P.A., Nandhakumar, I.S., Terrill, N.J., Elliott, J.M. and Squires, A.M. (2016) Aligned platinum nanowire networks from surface-oriented lipid cubic phase templates. Nanoscale, 8 (5), 2850-2856. (doi:10.1039/C5NR06691C).

Record type: Article

Abstract

Mesoporous metal structures featuring a bicontinuous cubic morphology have a wide range of potential applications and novel opto-electronic properties, often orientation-dependent. We describe the production of nanostructured metal films 1–2 microns thick featuring 3D-periodic ‘single diamond’ morphology that show high out-of-plane alignment, with the (111) plane oriented parallel to the substrate. These are produced by electrodeposition of platinum through a lipid cubic phase (QII) template. Further investigation into the mechanism for the orientation revealed the surprising result that the QII template, which is tens of microns thick, is polydomain with no overall orientation. When thicker platinum films are grown, they also show increased orientational disorder. These results suggest that polydomain QII samples display a region of uniaxial orientation at the lipid/substrate interface up to approximately 2.8 ± 0.3 ?m away from the solid surface. Our approach gives previously unavailable information on the arrangement of cubic phases at solid interfaces, which is important for many applications of QII phases. Most significantly, we have produced a previously unreported class of oriented nanomaterial, with potential applications including metamaterials and lithographic masks.

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Accepted/In Press date: 6 January 2016
e-pub ahead of print date: 7 January 2016
Published date: 7 February 2016

Identifiers

Local EPrints ID: 394491
URI: http://eprints.soton.ac.uk/id/eprint/394491
ISSN: 2040-3364
PURE UUID: fc4ade39-0e31-4284-9c22-a0f52a6e409a
ORCID for I.S. Nandhakumar: ORCID iD orcid.org/0000-0002-9668-9126

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Date deposited: 19 May 2016 09:25
Last modified: 17 Dec 2019 01:56

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