Air bubbles could be the secret to artificial skin: On a uniform elastomeric substrate, traction tests revealed the creation of micro-fissures in the metallic layer, which would eventually result in the rupture of the conducting network. But with foam substrates, these cracks only occurred above the air bubbles. "Between the bubbles, the metal remained intact. The conducting network is thus maintained and can function," she explains. "Our measurements showed that we could achieve a level of elasticity over 100% without disrupting the network. These metallic pathways built upon foam could thus be used as electrodes, sensors or interconnections for the electronic skin that we're developing."
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