The University of Southampton
University of Southampton Institutional Repository

Wetting phenomenon in nanoporous gold films

Wetting phenomenon in nanoporous gold films
Wetting phenomenon in nanoporous gold films
We have fabricated nanoporous gold (np-Au) films on silicon wafers by dealloying films formed by simultaneous sputter deposition of gold and silver. We report an interesting wetting phenomenon observed after placing a droplet of liquid on the np-Au film surface. As a droplet was dispensed onto the surface, wetting equilibrium was quickly reached and a wetting halo appeared with its perimeter equidistant from the perimeter of the droplet. Non-porous gold control samples did not display such behavior. This phenomenon was systematically studied by dispensing liquid droplets with different surface tensions and then measuring the width of the wetting halo. It was observed that halo width increased with surface tension. Experiments were extended to observe the effects of film thickness and porosity on the halo width. The width increased as film thickness increased. The relationship between the width and porosity was inconclusive due to large data scatter

1938-5862
83-89
Seker, Erkin
2583be7e-b2c4-4947-b91e-b5ffd5d4a4df
Tauer, Tania
c7a12519-7cd9-47b7-8b2c-5c42e8a7a6b0
Zhu, Jianzhong
8020e0dd-8704-4af8-8076-94d360663d67
Begley, Matthew
0ab3dae1-a584-45f9-8c78-d965a0f6b279
Bart-Smith, Hilary
d866c0ea-414c-4516-b9f0-c221b10fb508
Zangari, Giovanni
97b790be-717e-46c3-97b9-c956f732c135
Kelly, Robert G.
13f8f812-b290-430e-8df5-9f088b275d9e
Utz, Marcel
c84ed64c-9e89-4051-af39-d401e423891b
Reed, Michael L.
dbef6956-692a-40eb-aa11-59b977d34c84
Seker, Erkin
2583be7e-b2c4-4947-b91e-b5ffd5d4a4df
Tauer, Tania
c7a12519-7cd9-47b7-8b2c-5c42e8a7a6b0
Zhu, Jianzhong
8020e0dd-8704-4af8-8076-94d360663d67
Begley, Matthew
0ab3dae1-a584-45f9-8c78-d965a0f6b279
Bart-Smith, Hilary
d866c0ea-414c-4516-b9f0-c221b10fb508
Zangari, Giovanni
97b790be-717e-46c3-97b9-c956f732c135
Kelly, Robert G.
13f8f812-b290-430e-8df5-9f088b275d9e
Utz, Marcel
c84ed64c-9e89-4051-af39-d401e423891b
Reed, Michael L.
dbef6956-692a-40eb-aa11-59b977d34c84

Seker, Erkin, Tauer, Tania, Zhu, Jianzhong, Begley, Matthew, Bart-Smith, Hilary, Zangari, Giovanni, Kelly, Robert G., Utz, Marcel and Reed, Michael L. (2007) Wetting phenomenon in nanoporous gold films. ECS Transactions, 6 (11), 83-89. (doi:10.1149/1.2790417).

Record type: Article

Abstract

We have fabricated nanoporous gold (np-Au) films on silicon wafers by dealloying films formed by simultaneous sputter deposition of gold and silver. We report an interesting wetting phenomenon observed after placing a droplet of liquid on the np-Au film surface. As a droplet was dispensed onto the surface, wetting equilibrium was quickly reached and a wetting halo appeared with its perimeter equidistant from the perimeter of the droplet. Non-porous gold control samples did not display such behavior. This phenomenon was systematically studied by dispensing liquid droplets with different surface tensions and then measuring the width of the wetting halo. It was observed that halo width increased with surface tension. Experiments were extended to observe the effects of film thickness and porosity on the halo width. The width increased as film thickness increased. The relationship between the width and porosity was inconclusive due to large data scatter

Full text not available from this repository.

More information

Published date: 2007
Organisations: Magnetic Resonance

Identifiers

Local EPrints ID: 355552
URI: https://eprints.soton.ac.uk/id/eprint/355552
ISSN: 1938-5862
PURE UUID: b38806dc-f366-423b-9e35-581f269441c8
ORCID for Marcel Utz: ORCID iD orcid.org/0000-0003-2274-9672

Catalogue record

Date deposited: 18 Oct 2013 15:38
Last modified: 20 Jul 2019 00:40

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×