Two-step approach for the nanofabrication of highly ordered ultra-long porous gold nanowires with an adjustable porosity for SERS-based sensors

Adrien Chauvin, Cyril Delacôte, Leopoldo Molina-Luna, Mohammed Boujtita, Damien Thiry, Ke Du, Junjun Ding, Chang Hwan Choi, Bernard Humbert, Jean Yves Mevellec, Pierre Yves Tessier, Abdel Aziz El Mel

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Recently, nanoporous gold has been pointed out as a promising candidate for the development of SERS-based sensors for the detection of environmental toxins and small molecules. One way to improve the detection ability of such sensors is by engineering the porosity and shape of nanoporous materials. In this work we report on a versatile two-step approach for the synthesis of porous nanowires involving plasma deposition of gold-copper alloy on a nanograted substrate followed by a selective electrochemical etching. The relevance of this approach is its ability to prepare highly ordered ultra-long porous gold nanowires with an adjustable porosity and a length up to the macroscale. The resulting gold porous nanowire exhibits a very high roughness and high specific surface area suitable for highly sensitive detection of small molecules by SERS.

Original languageEnglish
Title of host publicationAdvanced Manufacturing, Electronics and Microsystems - TechConnect Briefs 2016
EditorsBart Romanowicz, Matthew Laudon, Fiona Case, Fiona Case, Bart Romanowicz
Pages19-22
Number of pages4
ISBN (Electronic)9780997511734
StatePublished - 2016
Event10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 19th Annual Nanotech Conference and Expo, and the 2016 National SBIR/STTR Conference - Washington, United States
Duration: 22 May 201625 May 2016

Publication series

NameAdvanced Materials - TechConnect Briefs 2016
Volume4

Conference

Conference10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 19th Annual Nanotech Conference and Expo, and the 2016 National SBIR/STTR Conference
Country/TerritoryUnited States
CityWashington
Period22/05/1625/05/16

Keywords

  • Dealloying
  • Electrochemistry
  • Gold
  • Nanoporous
  • Sensors

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