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New Material Could Harvest Water All Day Long


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New Material Could Harvest Water All Day Long
Micro-engineered, bioinspired design allows the material to collect moisture from cool fog as well as generating and collecting steam under sun
Tiny structures inspired by the shape of cactus spines allow a newly created material to gather drinkable water from the air both day and night, combining two water-harvesting technologies into one.
The material, a micro-architected hydrogel membrane (more on that later), can produce water through both solar steam-water generation and fog collection-two independent processes that typically require two separate devices. A paper about the material was published in Nature Communications on May 14. ....

United States , Ognjen Ilic , Juliar Greer , Caltech Harry Atwater , Nature Communications , University Of Texas Austin , Kavli Nanoscience Institute , Resnick Sustainability Institute , Nature Communications On , Fletcher Jones Foundation , Defense Advanced Research Projects Agency , University Of Minnesota , Donna Mettler Professor , Materials Science , Medical Engineering , Fletcher Jones Foundation Director , Kavli Nanoscience , Harry Atwater , Howard Hughes Professor , Applied Physics , Benjamin Mayhugh Assistant Professor , Mechanical Engineering , Fresh Water Harvesting , Microstructured Hydrogel Membranes , Caltech Space Solar Power Project , Joint Center ,

Capturing all of light's data in one snapshot


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IMAGE: A new $7.5 million Department of Defense grant is seeking to build a super camera that combines multiple metasurfaces that together can extract almost every bit of information that light.
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Credit: Mark Brongersma, Stanford
DURHAM, N.C. - Engineers at Duke University are leading a nationwide effort to develop a camera that takes pictures worth not just a thousand words, but an entire encyclopedia.
Funded by a five-year, $7.5 million grant through the Department of Defense s Multidisciplinary University Research Initiative (MURI) competition, the team will develop a super camera that captures just about every type of information that light can carry, such as polarization, depth, phase, coherence and incidence angle. The new camera will also use edge computing and hardware acceleration technologies to process the vast amount of information it captures within the device in real-time. ....

United Kingdom , New York , United States , Maiken Mikkelsen , Nader Engheta , H Nedwill Ramsey , David Miller , Federico Capasso , Andrea Al , Mark Brongersma , Daniele Faccio , Elizabethh Barton , Robertl Wallace , Albert Polman , Harry Atwater , City College Of New York , Department Of Defense Multidisciplinary University Research Initiative , Photonics Initiative , University Of Glasgow , City University Of New York , Engineers At Duke University , California Institute Of Technology , Science Research Center , Edwardl Ginzton Laboratory , Harvard University , University Of Pennsylvania ,

Engineers Place Molecule-Scale Devices in Precise Orientation


Proof-of-concept project paves the way for the integration of molecules with computer chips
Engineers have developed a technique that allows them to precisely place microscopic devices formed from folded DNA molecules in not only a specific location but also in a specific orientation.
As a proof-of-concept, they arranged more than 3,000 glowing moon-shaped nanoscale molecular devices into a flower-shaped instrument for indicating the polarization of light. Each of 12 petals pointed in a different direction around the center of the flower, and within in each petal about 250 moons were aligned to the direction of the petal. Because each moon only glows when struck by polarized light matching its orientation, the end result is a flower whose petals light up in sequence as the polarization of light shined upon it is rotated. The flower, which spans a distance smaller than the width of a human hair, demonstrates that thousands of molecules can be reliably oriented on the surfac ....

United Kingdom , David Kirkpatrick , Ashwin Gopinath , Chris Thachuk , Vincent Van Gogh , Caltech Paul Rothemund , Harry Atwater , Orr Family Foundation , Abedin Institute , Office Of Naval Research , National Science Foundation , Research Almaden , University Of Washington , University Of British Columbia , Office Of Scientific Research , Paul Rothemund , British Columbia , Howard Hughes Professor , Applied Physics , Materials Science , Anna Mitskovets , Naval Research , Air Force Office , Scientific Research , Banting Postdoctoral , California Institute Of Technology ,