Large-Area Micro and Nanopatterned Drum Molds through Novel Nanocoining Process

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Nanostructured surfaces have unique optical and wetting properties that can transform commercial products including OLEDs, biosensors, wire-grid polarizers, solar panels, and augmented and virtual reality headsets. Still, nanopatterning is generally limited to small-area, high-cost applications since traditional nanofabrication techniques are slow and expensive. Indenting a nanopatterned die into a metal surface allows rapid multiplication of nanopatterns over large areas. This paper will discuss Smart Material Solutions’ recent developments towards large-area nanostructured mold fabrication using indenting processes. Results include ultrasonic nanocoining, a patented process that enables seamless patterning of cylindrical drum molds for roll-to-roll (R2R) manufacturing hundreds of times faster than competing technologies like electron-beam lithography. Results also include lessons learned from traditional, slow-speed step and repeat indenting methods.

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Journal: TechConnect Briefs
Volume: TechConnect Briefs 2019
Published: June 17, 2019
Pages: 365 - 368
Industry sector: Sensors, MEMS, Electronics
Topics: Nanoelectronics, Sensors - Chemical, Physical & Bio
ISBN: 978-0-9988782-8-7