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Solvent-resistant ultraflat gold using liquid glass

Solvent-resistant ultraflat gold using liquid glass
Solvent-resistant ultraflat gold using liquid glass
Templating against atomically flat materials allows creation of smooth metallic surfaces. The process of adding the backing (superstrate) to the deposited metals has proven to be the most difficult part in producing reliable, large-area, solvent-resistant substrates and has been the subject of recent research. In this paper we describe a simple and inexpensive liquid glass template-stripping (lgTS) method for the fabrication of large area ultraflat gold surfaces. Using our lgTS method, ultraflat gold surfaces with normals aligned along the 111 crystal plane and with a root-mean-square roughness of 0.275 nm (over 1 ?m2) were created. The surfaces are fabricated on silica-based substrates which are highly solvent resistant and electrically insulating using silicate precursor solution (commonly known as “liquid glass”) and concomitant mild heat treatment. We demonstrate the capabilities of such ultraflat gold surfaces by imaging nanoscale objects on top and fabricating microelectrodes as an example application. Because of the simplicity and versatility of the fabrication process, lgTS will have wide-ranging application in imaging, catalysis, electrochemistry, and surface science.
0743-7463
1347-1350
Hugall, James T.
a8a3be44-b500-47bd-ad58-99cf374fb586
Finnemore, Alexander S.
d73abc00-30ff-41bd-84ea-0c4fad0ac60d
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Steiner, Ulrich
fe42300a-6739-4484-bec2-a132fdc40703
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9
Hugall, James T.
a8a3be44-b500-47bd-ad58-99cf374fb586
Finnemore, Alexander S.
d73abc00-30ff-41bd-84ea-0c4fad0ac60d
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Steiner, Ulrich
fe42300a-6739-4484-bec2-a132fdc40703
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9

Hugall, James T., Finnemore, Alexander S., Baumberg, Jeremy J., Steiner, Ulrich and Mahajan, Sumeet (2011) Solvent-resistant ultraflat gold using liquid glass. Langmuir, 28 (2), 1347-1350. (doi:10.1021/la204299h).

Record type: Article

Abstract

Templating against atomically flat materials allows creation of smooth metallic surfaces. The process of adding the backing (superstrate) to the deposited metals has proven to be the most difficult part in producing reliable, large-area, solvent-resistant substrates and has been the subject of recent research. In this paper we describe a simple and inexpensive liquid glass template-stripping (lgTS) method for the fabrication of large area ultraflat gold surfaces. Using our lgTS method, ultraflat gold surfaces with normals aligned along the 111 crystal plane and with a root-mean-square roughness of 0.275 nm (over 1 ?m2) were created. The surfaces are fabricated on silica-based substrates which are highly solvent resistant and electrically insulating using silicate precursor solution (commonly known as “liquid glass”) and concomitant mild heat treatment. We demonstrate the capabilities of such ultraflat gold surfaces by imaging nanoscale objects on top and fabricating microelectrodes as an example application. Because of the simplicity and versatility of the fabrication process, lgTS will have wide-ranging application in imaging, catalysis, electrochemistry, and surface science.

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More information

Published date: 1 December 2011
Additional Information: Times Cited: 0
Organisations: Molecular Diagnostics & Thereputics

Identifiers

Local EPrints ID: 342916
URI: http://eprints.soton.ac.uk/id/eprint/342916
ISSN: 0743-7463
PURE UUID: 28439007-3b8c-47e2-9316-1ea3a4e8d0a5
ORCID for Sumeet Mahajan: ORCID iD orcid.org/0000-0001-8923-6666

Catalogue record

Date deposited: 18 Dec 2012 14:47
Last modified: 09 Nov 2021 03:16

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Contributors

Author: James T. Hugall
Author: Alexander S. Finnemore
Author: Jeremy J. Baumberg
Author: Ulrich Steiner
Author: Sumeet Mahajan ORCID iD

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