화학공학소재연구정보센터
Thin Solid Films, Vol.636, 375-383, 2017
Laser-direct fabrication of invisible Ag nanowire electrode pattern on flexible plastic substrate
We show that invisible Ag nanowire (AgNW) electrode pattern can be directly fabricated on plastic substrate using a laser. Our method, which is fundamentally based on the Rayleigh instability, is to block the current flow in selected areas by cutting nanowires. AgNWfilm spin-coated on a polyethylenetherephthalate substrate was selectively irradiated using a nanosecond-pulsed laser beam to produce a patterned structure consisting of spatially separated conducting and insulating regions. Since the laser-cut nanowires remain on the substrate, the electrode pattern fabricated by this approach can be invisible. Although Ag nanowires were instantaneously heated above 220 degrees C by the laser beam, a very short exposure time of 10(-3) - 10(-4) s prevented the substrate from being damaged. (C) 2017 Elsevier B.V.All rights reserved.