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Controlling acoustic transport in hypersonic crystals

Scientists have determined that bulk coherent acoustic vibrations are heavily damped by scattering from radially aligned nanosized pores within hypersonic crystals of closely packed colloidal silica. Surface acoustic modes are much less influenced, suggesting new ways to manipulate thermal transport via phonon propagation control.

Sep 22nd, 2014

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A temperature switchable nanopore membrane to regulate flow

Researchers have developed a novel membrane with highly aligned nanoscale pores that open and close in response to temperature; this highly porous, valve-like material has many potential filtration applications, including water purification and molecular separation.

Sep 22nd, 2014

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Uncovering the forbidden side of molecules

Researchers have succeeded in observing the 'forbidden' infrared spectrum of a charged molecule for the first time. These extremely weak spectra offer perspectives for extremely precise measurements of molecular properties and may also contribute to the development of molecular clocks and quantum technology.

Sep 21st, 2014

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Northeastern unveils state-of-the-art 3D nanoscale printing system

Uni­ver­sity leaders and nan­otech­nology researchers joined rep­re­sen­ta­tives from industry and gov­ern­ment agen­cies at Northeastern's George J. Kostas Research Insti­tute for Home­land Secu­rity to unveil NanoOPS, a nanoscale printing system with the poten­tial to trans­form nanoman­u­fac­turing and spur inno­va­tion in a range of areas including elec­tronics, med­i­cine, and energy storage.

Sep 20th, 2014

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Experimenting with smartgel gelation

Scientists are experimenting with a new method of gelation. They can add nanoparticles or biomolecules with useful pH, chemical, and temperature sensing properties into a liquid, but incorporating those liquids into existing technology proves difficult.

Sep 19th, 2014

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Solar cell researchers break the 'electrode barrier'

For decades, polymer scientists and synthetic chemists working to improve the power conversion efficiency of organic solar cells were hampered by the inherent drawbacks of commonly used metal electrodes, including their instability and susceptibility to oxidation. Now for the first time, researchers have developed a more efficient, easily processable and lightweight solar cell that can use virtually any metal for the electrode, effectively breaking the 'electrode barrier'.

Sep 18th, 2014

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