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Omnidirectional Printing of Flexible, Spanning, and Stretchable Silver Microelectrodes
Keywords: silver inks, direct write, microelectrodes
We have developed a simple approach for patterning silver microelectrodes via omnidirectional printing of concentrated nanoparticle inks. Minimum feature widths of ~ 2 m are produced in both uniform and high aspect ratio motifs. These flexible, spanning, and stretchable microelectrodes are heterogeneously integrated with semiconductor, plastic, and glass substrates. The patterned microelectrodes withstand repeated bending and stretching to large levels of strain without degradation of their electrical properties. Using this approach, wire bonding to fragile 3D devices and patterning of novel interconnect designs for solar cell and light emitting diode (LED) arrays are demonstrated.
Jennifer A. Lewis, Thurnauer Professor of Materials Science
University of Illinois at Urbana-Champaign
Urbana, IL

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