Welding Nanowires with Water

  • Author: ChemistryViews.org
  • Published: 27 January 2017
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Nano Letters/ACS Publications
  • Associated Societies: American Chemical Society (ACS), USA
thumbnail image: Welding Nanowires with Water

Silver nanowire films can be used as flexible transparent electrodes. The junctions between the wires are the limiting factor for the performance of such electrodes. Nanowelding of the wires to enlarge the contact surface can lower the electrical resistance of the films. However, the methods used for this, such as heating, pressure, or soldering, can be difficult to control or may change the structure of the films.

Chuan Fei Guo, Southern University of Science & Technology, Guangdong, China, Zhifeng Ren, University of Houston, TX, USA, and colleagues have developed a cold-welding process for silver nanowires that only uses water. The team prepared nanowire films and treated them with water vapor by breathing on them or with water mist from a humidifier. The water forms a thin layer between the wire junctions, and the capillary force creates enough pressure to push the wires together, weld them, and enlarge their contact surface. Because the moisture evaporates quickly, the process has to be repeated several times for an effective welding result.

The welded films showed improved conductance and mechanical stability, but remain transparent. According to the researchers, this simple process could also be used to repair damaged electrodes, to weld other metal nanowires, or to create other nanostructures.


Article Views: 1598

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter

Magazine of Chemistry Europe (16 European Chemical Societies)published by Wiley-VCH