@misc{10481/55574,
year = {2018},
month = {12},
url = {http://hdl.handle.net/10481/55574},
abstract = {The necessity to place sensors far away from the processing unit in smart clothes or artificial
skins for robots may require conductive wirings on stretchable materials at very low-cost. In this
work, we present an easy method to produce wires using only commercially available materials.
A consumer grade inkjet printer was used to print a wire of silver nanoparticles with a sheet resistance
below 1 W/sq. on a non-pre-strained sheet of elastic silicone. This wire was stretched more than
10,000 times and was still conductive afterwards. The viscoelastic behavior of the substrate results in
a temporarily increased resistance that decreases to almost the original value. After over-stretching,
the wire is conductive within less than a second. We analyze the swelling of the silicone due to the
ink’s solvent and the nanoparticle film on top by microscope and SEM images. Finally, a 60 mm long
stretchable conductor was integrated onto wearables, and showed that it can bear strains of up to
300% and recover to a conductivity that allows the operation of an assembled LED assembled at only
1.8 V. These self-healing wires can serve as wiring and binary strain or pressure sensors in sportswear,
compression underwear, and in robotic applications.},
organization = {This work has been partially supported the TUM Graduate School (TUM GS), and the European Union
through the fellowship H2020-MSCA-IF-2017 794885-SELFSENS. Additionally, this work was supported by the
German Research Foundation (DFG) and the Technical University of Munich within the Open Access Publishing
Funding Programme.},
publisher = {MDPI},
keywords = {Inkjet printing},
keywords = {Printed electronics},
keywords = {Silver nanoparticles},
keywords = {Stretchable},
keywords = {Wearables},
title = {Over-Stretching Tolerant Conductors on Rubber Films by Inkjet-Printing Silver Nanoparticles for Wearables},
author = {Albrecht, Andreas and Bobinger, Marco and Salmerón, José F. and Becherer, Markus and Cheng, Gordon and Lugli, Paolo and Rivadeneyra Torres, Almudena},
}