Skip to main content
Email Print Share

"El Collar del Hierro: The Ferro-Necklace"

Necklace-like shapes created by an oil-based magnetic fluid and floating on water

"El Collar del Hierro: The Ferro-Necklace."

This photo shows necklace-like shapes created by an oil-based magnetic fluid (or ferrofluid) floating on water and under the influence of a magnetic field. The dark, solid structures are due to the agglomeration of fine iron-containing nanoparticles in the fluid. The lighter floating fluid structures are formed due to a fluid instability related to surface tension effects.

This graphic was a finalist in the 2005 Science & Engineering Visualization Challenge (SciVis) competition, sponsored by the National Science Foundation and the Journal Science. The competition is held each year to recognize outstanding achievements by scientists, engineers, visualization specialists and artists who are innovators in using visual media to promote the understanding of research results and scientific phenomena. To learn more about the competition and view all the winning entries, see the SciVis Special Report. (Date of Image: unknown)

Credit: Ashok Sinha, Ranjan Ganguly and Ishwar K. Puri, Engineering Science and Mechanics Department, Virginia Polytechnic and State University
See other images like this in NSF's Science360 for iPad app. To download the Science360 for iPad application for free, visit the Apple iTunes store.

General Restrictions:
Images and other media in the National Science Foundation Multimedia Gallery are available for use in print and electronic material by NSF employees, members of the media, university staff, teachers and the general public. All media in the gallery are intended for personal, educational and nonprofit/non-commercial use only.

Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation. Additional information about general usage can be found in Conditions.

Also Available:
Download the high-resolution JPG version of the image. (403 KB)

Use your mouse to right-click (Mac users may need to Ctrl-click) the link above and choose the option that will save the file or target to your computer.