50 Current news of American Institute of Physics

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Laser-based ultrasound approach provides new direction for nondestructive testing

09-Sep-2019

Many industrial buildings, including nuclear power plants and chemical plants, rely on ultrasound instruments that continually monitor the structural integrity of their systems without damaging or altering their features. One new technique draws on laser technology and candle soot to generate ...

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Folded paper creates portable lab for field laboratory tests

22-Aug-2019

Monitoring and tracking biological threats or epidemics require the ability to carry out medical and laboratory tests in the field during a disaster or other austere situations. Expensive laboratory equipment is often unavailable in these settings, so inexpensive point-of-care technology is ...

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A new method to detect nucleation

27-Jul-2018

As a solution evaporates, the dissolved chemicals concentrate until they begin forming a crystal through a process called nucleation. Industries that use small crystals in pharmaceuticals, food and microelectronics are seeking to understanding this nucleation event. Scientists studying nucleation ...

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Modelling how fracturing metallic glass releases energy at the atomic level

20-Jul-2018

Metallic glasses -- alloys lacking the crystalline structure normally found in metals -- are an exciting research target for tantalizing applications, including artificial joints and other medical implant devices. However, the difficulties associated with predicting how much energy these ...

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New cost-effective instrument measures molecular dynamics on a picosecond timescale

19-Jul-2018

Studying the photochemistry, or chemical results of light, has shown that ultraviolet radiation can set off harmful chemical reactions in the human body and, alternatively, can provide "photo-protection" by dispersing extra energy. To better understand the dynamics of these photochemical ...

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A first look at interstitial fluid flow in the brain

05-Jul-2018

Interstitial fluid transports nutrients and removes waste between the organs and tissues in our body. In the brain, interstitial fluid is thought to be composed of circulating cerebrospinal fluid, cellular waste and blood plasma, and past research has shown a link between interstitial fluid flow ...

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THz spectroscopy could help Explain water's anomalies

29-Jun-2018

Liquid water sustains life on earth, but its physical properties remain mysterious among scientific researchers. Recently, a team of Swiss researchers used existing THz spectroscopy techniques to measure liquid water's hydrogen bonding. Future efforts with this technique could one day help ...

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A better way to control crystal vibrations

23-May-2018

The vibrational motion of an atom in a crystal propagates to neighboring atoms, which leads to wavelike propagation of the vibrations throughout the crystal. The way in which these natural vibrations travel through the crystalline structure determine fundamental properties of the material. For ...

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Silver nanoparticles take spectroscopy to new dimension

A new way of organizing nanostructures has boosted Raman signals by a hundred thousand times to better identify and characterize different molecules

04-Jan-2018

As medicine and pharmacology investigate nanoscale processes, it has become increasingly important to identify and characterize different molecules. Raman spectroscopy, a technique that leverages the scattering of laser light to identify molecules, has a limited capacity to detect molecules in ...

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Protein-folding simulations sped up

08-Dec-2017

Proteins, the ubiquitous workhorses of biochemistry, are huge molecules whose function depends on how they fold into intricate structures. To understand how these molecules work, researchers use computer modeling to calculate how proteins fold. Now, a new algorithm can accelerate those vital ...

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