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55 Current news of Duke University

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Layered liquids arrange nanoparticles into useful configurations

Theoretical approach for assembling nanoparticles uses an idea similar to separated vinaigrettes

28-Mar-2019

Materials scientists at Duke University have theorized a new "oil-and-vinegar" approach to engineering self-assembling materials of unusual architectures made out of spherical nanoparticles. The resulting structures could prove useful to applications in optics, plasmonics, electronics and ...

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Disordered materials could be hardest, most heat-tolerant carbides

Simulations predict new class of carbides

28-Nov-2018

Materials scientists at Duke University and UC San Diego have discovered a new class of carbides expected to be among the hardest materials with the highest melting points in existence. Made from inexpensive metals, the new materials may soon find use in a wide range of industries from machinery ...

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Bending light around tight corners without backscattering losses

Photonic crystal waveguide paves the way to build futuristic light-based computers

21-Nov-2018

Engineers at Duke University have demonstrated a device that can direct photons of light around sharp corners with virtually no losses due to backscattering, a key property that will be needed if electronics are ever to be replaced with light-based devices. The result was achieved with photonic ...

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3D-printed lithium-ion batteries

18-Oct-2018

Electric vehicles and most electronic devices, such as cell phones and laptop computers, are powered by lithium-ion batteries. Until now, manufacturers have had to design their devices around the size and shape of commercially available batteries. But researchers have developed a new method to 3D ...

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Widespread uranium contamination found in India's groundwater

11-Jun-2018

A new Duke University-led study has found widespread uranium contamination in groundwater from aquifers in 16 Indian states. The main source of the uranium contamination is natural, but human factors such as groundwater-table decline and nitrate pollution may be exacerbating the problem. Several ...

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Thin engineered material perfectly redirects and reflects sound

Metamaterial device controls transmission and reflection of acoustic waves

11-Apr-2018

Metamaterials researchers at Duke University have demonstrated the design and construction of a thin material that can control the redirection and reflection of sound waves with almost perfect efficiency. While many theoretical approaches to engineer such a device have been proposed, they have ...

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Heavy-petroleum fuels raising vanadium emissions

19-Dec-2017

Human emissions of the potentially harmful trace metal vanadium into Earth's atmosphere have spiked sharply since the start of the 21st century due in large part to industry's growing use of heavy oils, tar sands, bitumen and petroleum coke for energy, a new Duke University study finds. "Human ...

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Air pollution casts shadow over solar energy production

29-Jun-2017

According to a new study, airborne particles and their accumulation on solar cells are cutting energy output by more than 25 percent in certain parts of the world. The regions hardest hit are also those investing the most in solar energy installations: China, India and the Arabian Peninsula. "My ...

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Nanowire 'inks' enable paper-based printable electronics

05-Jan-2017

By suspending tiny metal nanoparticles in liquids, Duke University scientists are brewing up conductive ink-jet printer "inks" to print inexpensive, customizable circuit patterns on just about any surface. Printed electronics, which are already being used on a wide scale in devices such as the ...

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Nanocubes simplify printing and imaging in color and infrared

16-Dec-2016

Duke University researchers believe they have overcome a longstanding hurdle to producing cheaper, more robust ways to print and image across a range of colors extending into the infrared. As any mantis shrimp will tell you, there are a wide range of "colors" along the electromagnetic spectrum ...

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