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lattice

Breakthrough material is barely more than air

Call them a bunch of intellectual lightweights.

Researchers at HRL Laboratories, the California Institute of Technology, and the University of California at Irvine have created what they say is the lowest-density material, a lattice of hollow tubes of the metal nickel.

Its volume is 99.99 percent air, and its density is 0.9 milligram per cubic centimeter--not including the air in or between its tubes. That density is less than one-thousandth that of water.

The metallic microlattice, as the researchers call it, could be useful for absorbing sound, vibration, and shock. Other possibilities, according to HRL: electrodes that could … Read more

Intellectual Ventures files three new patent suits

Intellectual Ventures, founded by former Microsoft Chief Technology Officer Nathan Myhrvold, filed three patent infringement lawsuits today against nine companies in the security, memory, and chip markets.

One lawsuit names as defendants Check Point Software Technologies, McAfee, Symantec, and Trend Micro and accuses them of infringing on four of its patents related to antivirus and Internet security, according to the lawsuit available for download here.

The second suit accuses Elpida Memory and Hynix Semiconductor, makers of DRAM (Dynamic Random Access Memory) and Flash memory, of infringing between five and seven of its patents. And the final suit alleges that three … Read more