Wednesday, August 7, 2013

3D Printing of Liquid Metals at Room Temperature



Michael Dickey
Published on Jul 8, 2013
Researchers at NC State have developed a way to print liquid metals into 3D structures at room temperature. The structures are stabilized by a thin oxide 'skin' that forms on the liquid metal. The approaches shown here represent new ways to direct write metals in 3D. In addition, the resulting components can, in principle, self-heal ( "Self-healing stretchable wires" http://www.youtube.com/watch?v=lfAOEt...) and be ultra-stretchable ( "Ultra-stretchable wires" http://www.youtube.com/watch?v=QlVuIK...).

The paper, "3D Printing of Free Standing Liquid Metal Microstructures," is published online in Advanced Materials. For more information, visit http://onlinelibrary.wiley.com/doi/10....

The work was supported by the National Science Foundation.

Original press release: http://news.ncsu.edu/releases/wms-dic...

Hypersonic: The Warp Speed of Today



The X-51A Waverider is an unmanned scramjet-powered demonstration aircraft, capable of achieving hypersonic speeds five times the speed of sound. At that speed an aircraft could travel across the U.S. in under an hour.

Breakingviews: Gold’s September warning (5:49)



Aug. 7 - Gold’s price slide may warn of an anxious September ahead, says Reuters Breakingviews.

FACTBOX: Asia's casino ambitions (2:07)



Aug. 7 - As Asia's casino operators gear up to report earnings, we break down some of the numbers on the plans, successes and failures of the region's burgeoning gaming industry

Getting in a spin over parking (0:50)



July 31 - The difficulty of parallel parking will be a thing of the past, if the designers of a revolutionary new electric car have their way. The prototype vehicle, designed by Chinese, Taiwanese, and New Zealand engineers, has four separate electrically powered wheels, enabling effortless U-turns and sideways parking at the touch of a button. Jim Drury reports