40 Current news of American Institute of Physics

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Probing exotic ices

12-Oct-2017

Water is everywhere. But it's not the same everywhere. When frozen under extreme pressures and temperatures, ice takes on a range of complex crystalline structures. Many of the properties and behaviors of these exotic ices remain mysterious, but a team of researchers recently provided new ...

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Creative use of noise brings bio-inspired electronic improvement

27-Sep-2017

In conventional electronics, a great deal of effort is devoted to eliminating stochastic resonance (SR) -- the annoying hiss that generally hinders the detection of weak signals and degrades overall device performance. But, what if there were a way to exploit this effect to enhance signal ...

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Fluorescence microscopy on a chip -- no lenses required

21-Sep-2017

Fluorescence microscopy gives researchers incredible power to illuminate the tiniest structures and capture the real-time activities of live cells by tagging biological molecules with a veritable rainbow of fluorescent dyes. This power comes at a cost: The technology can be expensive and ...

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Tiny lasers from a gallery of whispers

21-Sep-2017

Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a phenomenon similar to an effect observed in circular galleries, such as in some cathedrals or museums, where sound waves travel across the ...

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Aeroices: Newly discovered ultralow-density ice

07-Sep-2017

Water has many ice phases that form under different pressure and temperature conditions. The effects of positive pressure have been explored extensively, with the results somewhat predictable: As the pressure increases, so does the density of the ice. Much less is known, however, about the ...

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Bond dissociation energies for transition metal silicides accurately determined

25-Aug-2017

Transition metal silicides, a distinct class of semiconducting materials that contain silicon, demonstrate superior oxidation resistance, high temperature stability and low corrosion rates, which make them promising for a variety of future developments in electronic devices. Despite their ...

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Gold shines through properties of nano biosensors

Fluorescence in ligand-protected gold nanoclusters is an intrinsic property of the gold particles themselves

17-Aug-2017

With their remarkable electrical and optical properties, along with biocompatibility, photostability and chemical stability, gold nanoclusters are gaining a foothold in a number of research areas, particularly in biosensing and biolabeling. These gold nanoclusters are chemically protected by ...

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Turning up the heat for perfect (nano)diamonds

15-Feb-2017

Quantum mechanics, the physics that governs nature at the atomic and subatomic scale, contains a host of new physical phenomena to explore quantum states at the nanoscale. Though tricky, there are ways to exploit these inherently fragile and sensitive systems for quantum sensing. One nascent ...

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Understanding breakups

31-Jan-2017

As interest and demand for nanotechnology continues to rise, so will the need for nanoscale printing and spraying, which relies on depositing tiny drops of liquid onto a surface. Now researchers from Tsinghua University in Beijing have developed a new theory that describes how such a nanosized ...

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New model developed to study inflammatory bowel disease in human biopsy samples

04-Nov-2016

Inflammatory bowel disease (IBD) is a complex condition that requires a lifetime of care and increases a person's cancer risk. But its origins are still a mystery. Now, a team of researchers have created a new culture model of the human intestine where living tissue from a patient biopsy can be ...

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