Category Physics

Single GeV center in diamond. (left) Fluorescence mapping and (right) atomic structure model. Credit: Tokyo Institute of Technology

Germanium defects in a diamond crystal lattice act as a reliable source for single photons. Pure diamonds are naturally colorless, but gaps in the crystal structure or impurities of other elements can create colors and even emit fluorescence. Recently, researchers have shown that the fluorescent lattice defects could be useful as single photon sources for quantum cryptography and as bright luminescent makers in living cells.

Now a new type of diamond crystal defect that fluoresces to produce single photons in a narrow, high energy wavelength band has been demonstrated...

Single GeV center in diamond. (left) Fluorescence mapping and (right) atomic structure model. Credit: Tokyo Institute of Technology Read more at: http://phys.org/news/2015-09-diamond-bright-luminescence-quantum-crypotography.html#jCp

Germanium defects in a diamond crystal lattice act as a reliable source for single photons. Pure diamonds are naturally colorless, but gaps in the crystal structure or impurities of other elements can create colors and even emit fluorescence. Recently, researchers have shown that the fluorescent lattice defects could be useful as single photon sources for quantum cryptography and as bright luminescent makers in living cells.

Now a new type of diamond crystal defect that fluoresces to produce single photons in a narrow, high energy wavelength band has been demo...

PQED consists of a Brewster window (left) protecting the detector elements from impurities, adjustable bellows and the detector chamber itself. In order to further decrease uncertainties in measurement, the window was removed and the detector was protected from impurities using nitrogen flow.

Researchers at Aalto University and VTT Technical Research Centre of Finland have succeeded in developing a method which helps to improve the relative uncertainty in measuring the luminous efficacy of LEDs from the approximate 5% of today to 1% in the future.

“Thus far, solutions based on incandescent lamps have been used in photometry, i.e. in measuring light detected by the human eye,” explains Tomi Pulli, alto University...

This is a 3-D printed nerve regeneration pathway implanted in a rat helped to improve walking in 10 to 12 weeks after implantation. Credit: University of Minnesota College of Science and Engineering

Scientists have developed a 1st-of-its-kind, 3D printed guide that helps regrow both the sensory and motor functions of complex nerves after injury. The groundbreaking research has potential to help more than 200,000 people annually who experience nerve injuries or disease.

Nerve regeneration is a complex process. Because of this complexity, regrowth of nerves after injury or disease is very rare. Nerve damage is often permanent. Advanced 3D printing methods may now be the solution...