Direct writing of Au nanoneedles array on glass by confined laser spinning

Yingling Yang, Purdue University
Dong Lin, Purdue University
Gary J. Cheng, Birck Nanotechnology Center, Purdue University

Date of this Version



Appl. Phys. Lett. 101, 091911 (2012);


Copyright (2012) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 101, 091911 (2012); and may be found at The following article has been submitted to/accepted by Applied Physics Letters. Copyright (2012) Yingling Yang, Dong Lin and Gary J. Cheng. This article is distributed under a Creative Commons Attribution 3.0 Unported License.


Generation of gold nanoneedles on glass by confined laser spinning was explored by using a nanosecond pulsed laser. When the coated Au thin film was irradiated under the confinement of glass, gold nanoneedles were formed by spreading the molten liquid of gold under high pressure. The mechanism of the confined laser spinning process is studied. The maximum velocity and instability of molten liquid during confined laser spinning were estimated. The diameter of nanoneedles can be controlled by changing the thickness of coated gold thin film. Large scale of gold nanoneedles can be formed by this direct writing method and collected by confined glass. (C) 2012 American Institute of Physics. []


Nanoscience and Nanotechnology