The latest directory from the Metal Powder Industries Federation (MPIF) makes powder metallurgy players a bit easier to find. The 2003 PM2 Buyers Guide lists the manufacturing, materials, and product capabilities of 147 suppliers of powder metallurgy components and subassemblies. And the 2003 PM2 Suppliers directory lists 163 companies and organizations that produce the various metal feedstocks, make process equipment, and provide powder metallurgy services. Copies of the directory are available from the MPIF. Visit www.mpif.org.
Two different shape-shifting polymers have been announced from two different universities: Wyss Institute at Harvard University and Zhejiang University in eastern China. Both of them change their shapes when immersed in water, and the one from Wyss Institute was made with 3D-printing techniques.
When you think of the DARPA Robotics Challenge, you may imagine complex humanoid contraptions made of metal and wires that move like a Terminator Series T-90. But what actually happened at the much-vaunted event was something just a bit different.
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