By Unknown Lamer from Slashdot's micro-t-1000 department
ph4cr writes with news that a few researchers have discovered an alloy that allows them to print 3D structures from liquid metal at room temperature
. From the article: "'It's difficult to create structures out of liquids, because liquids want to bead up. But we’ve found that a liquid metal alloy of gallium and indium reacts to the oxygen in the air at room temperature to form a "skin" that allows the liquid metal structures to retain their shapes,' says Dr. Michael Dickey, an assistant professor of chemical and biomolecular engineering at NC State and co-author of a paper describing the work. ... One technique involves stacking droplets of liquid metal on top of each other, much like a stack of oranges at the supermarket. The droplets adhere to one another, but retain their shape – they do not merge into a single, larger droplet. ... Another technique injects liquid metal into a polymer template, so that the metal takes on a specific shape. The template is then dissolved, leaving the bare, liquid metal in the desired shape. The researchers also developed techniques for creating liquid metal wires, which retain their shape even when held perpendicular to the substrate."
is available online. There's also a video of the process in action, below the fold.Read Replies (0)
By Soulskill from Slashdot's rest-in-peace department
An anonymous reader writes "Seth Vidal, a lead developer of Yum, was killed in a hit-and-run accident while riding his bicycle in Durham, NC last night."
The Fedora Project posted a statement
. Quoting: "Seth was a lead developer of yum and the update repository system, and a contributor to the CentOS project as well as the original Fedora Extras system. He worked tirelessly on the infrastructure for the Fedora Project to make all systems work well and consistently for our contributors around the world. He was a gifted speaker, a brilliant thinker, a clever wit, a humble and genuinely funny person, and a good friend. The Fedora community owes an enormous debt of gratitude to Seth's dedication to Fedora and other free software projects, his commitment to community values, and his passion for excellence in his work. To say he will be missed is an understatement."Read Replies (0)