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Exploration of the smallest diameter tin nanowires achievable with electrodeposition: sub 7 nm Sn nanowires produced by electrodeposition from a supercritical fluid

Exploration of the smallest diameter tin nanowires achievable with electrodeposition: sub 7 nm Sn nanowires produced by electrodeposition from a supercritical fluid
Exploration of the smallest diameter tin nanowires achievable with electrodeposition: sub 7 nm Sn nanowires produced by electrodeposition from a supercritical fluid
Electrodeposition of Sn from supercritical difluoromethane has been performed into anodic alumina templates with pores down to 3 nm in diameter and mesoporous silica templates with pores of diameter 1.5 nm. Optimized deposits have been characterized using X-ray diffraction, scanning electron microscopy, scanning transmission electron microscopy (bright field, high angle annular dark field and energy dispersive X-ray elemental mapping). Crystalline 13 nm diameter Sn nanowires have been electrodeposited in symmetric pore anodic alumina. Direct transmission electron microscopy evidence of sub 7 nm Sn nanowires in asymmetric anodic alumina has been obtained. These same measurements present indirect evidence for electrodeposition through 3 nm constrictions in the same templates. A detailed transmission electron microscopy study of mesoporous silica films after Sn deposition is presented. These indicate that it is possible to deposit Sn through the 1.5 nm pores in the mesoporous films, but that the nanowires formed are not stable. Suggestions of why this is the case and how such extreme nanowires could be stabilized are presented.
1530-6984
Bartlett, Philip N.
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Beanland, Richard
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Burt, Jennifer
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Hasan, Mahboba, Mohammed
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Hector, Andrew L.
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Kashtiban, Reza J.
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Levason, William
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Lodge, Andrew
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Marks, Samuel
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Naik, Jay P
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Rind, M. Akhtar
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Reid, Gillian
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Richardson, Peter W
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Sloan, Jeremy
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Smith, David
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Bartlett, Philip N.
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Beanland, Richard
b8f4ba50-f35d-4880-9b97-ce2bcb1bd57a
Burt, Jennifer
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Hasan, Mahboba, Mohammed
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Hector, Andrew L.
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Kashtiban, Reza J.
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Levason, William
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Lodge, Andrew
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Marks, Samuel
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Naik, Jay P
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Rind, M. Akhtar
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Reid, Gillian
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Richardson, Peter W
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Sloan, Jeremy
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Smith, David
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Bartlett, Philip N., Beanland, Richard, Burt, Jennifer, Hasan, Mahboba, Mohammed, Hector, Andrew L., Kashtiban, Reza J., Levason, William, Lodge, Andrew, Marks, Samuel, Naik, Jay P, Rind, M. Akhtar, Reid, Gillian, Richardson, Peter W, Sloan, Jeremy and Smith, David (2018) Exploration of the smallest diameter tin nanowires achievable with electrodeposition: sub 7 nm Sn nanowires produced by electrodeposition from a supercritical fluid Nano Letters (doi:10.1021/acs.nanolett.7b04330).

Record type: Article

Abstract

Electrodeposition of Sn from supercritical difluoromethane has been performed into anodic alumina templates with pores down to 3 nm in diameter and mesoporous silica templates with pores of diameter 1.5 nm. Optimized deposits have been characterized using X-ray diffraction, scanning electron microscopy, scanning transmission electron microscopy (bright field, high angle annular dark field and energy dispersive X-ray elemental mapping). Crystalline 13 nm diameter Sn nanowires have been electrodeposited in symmetric pore anodic alumina. Direct transmission electron microscopy evidence of sub 7 nm Sn nanowires in asymmetric anodic alumina has been obtained. These same measurements present indirect evidence for electrodeposition through 3 nm constrictions in the same templates. A detailed transmission electron microscopy study of mesoporous silica films after Sn deposition is presented. These indicate that it is possible to deposit Sn through the 1.5 nm pores in the mesoporous films, but that the nanowires formed are not stable. Suggestions of why this is the case and how such extreme nanowires could be stabilized are presented.

Text Accepted manuscript for Exploration of the smallest diameter tin nanowires achievable with electrodeposition - Accepted Manuscript
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Accepted/In Press date: 22 January 2018
e-pub ahead of print date: 22 January 2018

Identifiers

Local EPrints ID: 417630
URI: https://eprints.soton.ac.uk/id/eprint/417630
ISSN: 1530-6984
PURE UUID: 105d468d-c57b-4f0e-ab73-ba5df2f0eae2
ORCID for Philip N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900
ORCID for Andrew L. Hector: ORCID iD orcid.org/0000-0002-9964-2163
ORCID for William Levason: ORCID iD orcid.org/0000-0003-3540-0971

Catalogue record

Date deposited: 07 Feb 2018 17:30
Last modified: 07 Feb 2018 17:30

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Contributors

Author: Richard Beanland
Author: Jennifer Burt
Author: Mahboba, Mohammed Hasan
Author: Reza J. Kashtiban
Author: William Levason ORCID iD
Author: Andrew Lodge
Author: Samuel Marks
Author: Jay P Naik
Author: M. Akhtar Rind
Author: Gillian Reid
Author: Peter W Richardson
Author: Jeremy Sloan
Author: David Smith

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