News Photos
Caption:
Liquid beads on a surface composed of silicon "nanonails." Made by
Tom Krupenkin and J. Ashley Taylor of University of Wisconsin-Madison's Department
of Mechanical Engineering, the surface repels virtually all liquids, including
water, oil, solvents and detergents. When an electrical current is applied, the
liquid slips past the nail heads and between the shanks to wet the entire surface.
According to Krupenkin, the nails create such a rough surface at the nanoscale
that liquids only touch the surface at the extreme ends of the forest of nails,
so the liquid is like sitting on a bed of air.
Photo by: courtesy Tom Krupenkin
Date: unknown
300 DPI JPEG
Caption: Silicon "nanonails" created by Tom Krupenkin
and J. Ashley Taylor of University of Wisconsin-Madison's Department of Mechanical
Engineering, form the basis of a novel surface that repels virtually all liquids,
including water, solvents, detergents and oils. When electrical current is
applied, the liquids slip past the nail heads and between the shanks of the
nails and wet the entire surface. The surface may have applications in biomedical
devices such as "labs-on-a-chip" and in extending the life of batteries.
Photo by: courtesy Tom Krupenkin
Date: unknown
300 DPI JPEG
Photo use
Photographs are available to media organizations and University of Wisconsin-Madison departments for news, editorial and public relations uses, both print and electronic, that are directly related to UW-Madison. They are NOT available for generic use. For university-related use -- including textbooks, commercial products or advertising -- please contact Bryce Richter, photographer, University Communications, (608) 262-7411 or brichter2@wisc.edu.
Published photos must include a credit ("photographer's name/University of Wisconsin-Madison" or "courtesy of"). The specific credit and other details are also embedded in the digital file, which can be viewed by using Photoshop and selecting "file>file info."
None of these images may be modified, altered or used in any way that changes or misrepresents the photograph's content or overall context.