Tabletop laser-like device can create multicolor beams (Image 5)

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12/22/2017 12:12 PM EST

The intensity profile of a coherent (laser-like) X-ray beam

The intensity profile of a coherent (laser-like) X-ray beam. In contrast to the incoherent (light-bulb-like) light emitted in all directions from a Roentgen X-ray tube, the X-rays produced by high harmonic generation are well directed and have low divergence. [Image 5 of 5 related images. Back to …

This is an NSF Multimedia Gallery item.

Tabletop laser-like device can create multicolor beams (Image 2)

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12/22/2017 12:12 PM EST

A coherent (laser-like) X-ray beam as it impacts a surface

This picture shows an image of a coherent (laser-like) X-ray beam as it impacts a surface. In contrast to the incoherent (light-bulb-like) light emitted in all directions from a Roentgen X-ray tube, the X-rays produced by a technique called high harmonic generation (HHG) emerge as well-directed, …

This is an NSF Multimedia Gallery item.

Tabletop laser-like device can create multicolor beams (Image 1)

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12/22/2017 12:12 PM EST

A coherent (laser-like) X-ray beam impacts a surface

In this image, a coherent (laser-like) X-ray beam impacts a surface. In contrast to the incoherent (light-bulb-like) light emitted in all directions from a Roentgen X-ray tube, the X-rays produced by a technique called high harmonic generation emerge as well-directed, laser-like, beams. [Image 1 …

This is an NSF Multimedia Gallery item.

Tabletop laser-like device can create multicolor beams (Image 3)

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12/22/2017 12:12 PM EST

Experimental setup used to create a coherent version of the Roentgen tube in the soft X-ray region of the spectrum

This image depicts the experimental setup used to create a coherent version of the Roentgen tube in the soft X-ray region of the spectrum. When a long-wavelength, femtosecond laser is focused into this hollow waveguide filled with high-pressure helium gas, part of the laser is converted into an …

This is an NSF Multimedia Gallery item.

Tabletop laser-like device can create multicolor beams (Image 4)

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12/22/2017 12:12 PM EST

When a Young

When a Young’s double slit is illuminated by a coherent, laser-like, beam, light from each slit can interfere and form a diffraction pattern, due to constructive and destructive interferences between light transmitted through each slit. These interference (or diffraction) patterns show that the …

This is an NSF Multimedia Gallery item.

Scientists are hot on the trail of cyberattackers, thanks to a new system which logs their actions

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12/22/2017 12:12 PM EST

The Discovery Files

A new cybersecurity system developed by researchers at the Georgia Institute of Technology and known as Refinable Attack INvestigation (RAIN) will provide forensic investigators a detailed record of an intrusion, even if the attackers attempted to cover their tracks. The system will be largely …

This is an NSF Multimedia Gallery item.

A new approach for detecting planets in the Alpha Centauri system

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12/22/2017 11:30 AM EST

alpha sun centuri

Yale University astronomers have taken a fresh look at the nearby Alpha Centauri star system and found new ways to narrow the search for habitable planets there. According to a study led by Professor Debra Fischer and graduate student Lily Zhao, there may be small, Earth-like planets in Alpha Centauri that have been overlooked. Meanwhile, the study ruled out the existence of a number of larger planets in the system.

Full story at https://news.yale.edu/2017/12/18/new-approach-detecting-planets-alpha-centauri-system

Source
Yale University

This is an NSF News From the Field item.

Nanotubes go with the flow to penetrate brain tissue

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12/22/2017 11:30 AM EST

device delivers a carbon nanotube fiber into agarose

Carbon nanotube electrodes are flexible like wet noodles, but researchers at Rice University have developed a method to implant them in brain tissue. Implanted wires could help patients with neurological diseases and help scientists explore cognitive processes and develop implants to help people to see, to hear and to control artificial limbs.

Full story at https://news.rice.edu/2017/12/18/nanotubes-go-with-the-flow-to-penetrate-brain-tissue-3/

Source
Rice University

This is an NSF News From the Field item.