A multiaxial stretchable interconnect using liquid-alloy-filled elastomeric microchannels

We report on the fabrication and characterizations of a multiaxial stretchable interconnect using room-temperature liquid-alloy-filled elastomeric microchannels. Polydimethylsiloxane (PDMS) microchannels coated at the bottom with a gold wetting layer were used as the reservoirs which were subsequent...

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Bibliographic Details
Published in:Applied physics letters 2008-01, Vol.92 (1), p.011904-011904-3
Main Authors: Kim, Hyun-Joong, Son, Chulwoo, Ziaie, Babak
Format: Article
Language:English
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Summary:We report on the fabrication and characterizations of a multiaxial stretchable interconnect using room-temperature liquid-alloy-filled elastomeric microchannels. Polydimethylsiloxane (PDMS) microchannels coated at the bottom with a gold wetting layer were used as the reservoirs which were subsequently filled by room-temperature liquid alloy using microfluidic injection technique. Using a diamond-shaped geometry to provide biaxial performance, a maximum stretchability of 100% was achieved ( Δ R = 0.24 Ω ) . Less than 0.02 Ω resistance variation was measured for 180° bending. Active electronics, light emitting diode, was also integrated onto the PDMS substrate with stretchable interconnects to demonstrate stable electrical connection during stretching, bending, and twisting.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2829595