Superhydrophobic antireflective silica films: Fractal surfaces and laser-induced damage thresholds Article

Xu, Y, Wu, D, Sun, YH et al. (2005). Superhydrophobic antireflective silica films: Fractal surfaces and laser-induced damage thresholds . 44(4), 527-533. 10.1364/AO.44.000527



cited authors

  • Xu, Y; Wu, D; Sun, YH; Huang, ZX; Jiang, XD; Wei, XF; Li, ZH; Dong, BZ; Wu, ZH

fiu authors

abstract

  • Several superhydrophobic antireflective silica films have been prepared by a solgel method that uses hexamethyl-disilizane (HMDS) as a modifier. In a high-power laser, laser-induced damage thresholds (LIDTs) of 23-30 J/cm 2 were obtained at 1064-nm wavelength with 1-ns pulse duration. By atomic-force microscopy and optical microscopy, the fractal surfaces of films were studied, and multifractal spectra (MFSs) were calculated both before and after laser damage. The two-sided effect of HMDS on particle growth determined the surface fractal of a particle and the multifractal structure of a film's surface. The bigger Δα was, both before and after laser damage, the lower the LIDT was. The effect of methyl groups should be included in the determination of the MFS of the LIDT. © 2005 Optical Society of America.

publication date

  • February 1, 2005

Digital Object Identifier (DOI)

start page

  • 527

end page

  • 533

volume

  • 44

issue

  • 4