Ceramics Don't Have To Be Brittle
Caltech materials scientist Julia Greer and her students have developed a method for constructing new structural materials by taking advantage of the unusual properties that solids can have at the nanometer scale, where features are measured in billionths of meters. They used this method to produce a ceramic (e.g., a piece of chalk or a brick) that contains about 99.9 percent air yet is incredibly strong, and that can recover its original shape after being smashed by more than 50 percent.
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In The Media
December 18, 2014
NASA Satellite Sends Back Most Detailed CO2 View Ever
The first global maps that use data from the OCO-2 satellite were released this week, and measure atmospheric gas to a fraction of a percent. Paul Wennberg notes that this level of detail makes OCO-2 "one of the most challenging remote missions that has ever been attempted."
December 17, 2014
Voyager 1 Surfs a Cosmic Tsunami
The plasma wave instrument aboard Voyager I captured the sound of ionized gas vibrating in interstellar space three different times between November 2014 and December 2014. Physicist Ed Stone explains how the vibrations were caused by powerful blasts of solar particles, each resulting in a "cosmic tsunami."
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