Nanotechnology

High speed fabrication of absorbance-enhanced micro–nanostructures on nickel surface using hundred-nanosecond pulsed laser

Fast rate:

4 min for treating an area of 15 × 10mm2

"

We report the generation of micro–nanostructures on nickel surface using a pulsed laser with pulse duration of 100/200 ns. The blacken nickel, which is covered with dense broccoli-like clusters having strong light trapping capacity covering broad spectrum (200–2000 nm), can be produced at a high laser scanning speed up to 100 mm/s. The absorbance of the blacken nickel can be over 98% in the UV, more than 97% in the visible, and over 90% in the near IR. In addition, by treating the nickel surface with two crossing scans of the laser, highly organized and shape-controllable periodic arrays of hump-craters can be fabricated."

Jinxiang Fu^1,2, Jingyuan Zhang³, Hao Liang^1,2, Yibo Wang^1,2,4, Zhiyan Zhang^1,2, Yannan Liu^1,2 and Xuechun Lin^1,2

Published 28 November 2016 • © 2017 The Japan Society of Applied Physics