Sentences with phrase «photonic crystals in»

They arranged photonic crystals in a woodpile - like stack, filling the gaps between the crystals with varying amounts of a polymer to control the refractive index of the metamaterial.

Not exact matches

Zecotek is a photonics technology company developing high - performance scintillation crystals, photo detectors, positron emission tomography scanning technologies, 3D auto - stereoscopic displays, 3D metal printing, and lasers for applications in...

While each particle in the interior of photonic crystals is surrounded by exactly twelve particles in the direct vicinity, the number of directly neighbouring particles in the mixture is inconsistent throughout.

Pete Vukusic and Ian Hooper of Exeter University in England studied the colored parts of the swallowtail's wings and found that the scales that comprised them contain photonic crystals whose atoms are spaced so precisely that only certain wavelengths of light can pass through.

García - Garibay hopes to design crystals that take advantage of properties of light, and whose applications could include advances in communications technology, optical computing, sensing and the field of photonics, which takes advantage of the properties of light; light can have enough energy to break and make bonds in molecules.

Physicists have only recently devised comparable materials, called photonic band - gap crystals, and are now exploring their use in phone switches, solar cells, and antennas.

The first photonic crystal, which he built in 1990, was the size of a baseball and could channel the microwaves useful in antenna applications.

The lattice of interlocking bars, called a photonic crystal, acts like a mirror to prevent light of a particular frequency caught in the cavities from escaping.

The resulting photonic crystals reflect the light in certain colors, a phenomenon observed in nature on apparently colorful butterfly wings.

For example, photonic crystals could funnel excess heat from a power plant's generator and release it over a much smaller band of frequencies to drive engines — such as those in electric - powered cars that can absorb energy only within a small range — much more efficiently.

In addition, photonic crystals will be a boon to researchers trying to develop computers that utilize photons instead of electrons.

In B. pavonina, however, this stacking is far more regular, creating what are known as photonic crystals.

«Möbius strip ties liquid crystal in knots to produce tomorrow's materials and photonic devices.»

In packed, two - dimensional crystalline systems, such as in photonic two - dimensional crystals, the particles are organized in hexagonal latticeIn packed, two - dimensional crystalline systems, such as in photonic two - dimensional crystals, the particles are organized in hexagonal latticein photonic two - dimensional crystals, the particles are organized in hexagonal latticein hexagonal lattices.

In this case, Lu was able to calculate precise measurements for the construction of a photonic crystal predicted to produce the manifestation of Weyl points — with dimensions and precise angles between arrays of holes drilled through the material, a configuration known as a gyroid structure.

«This is an interesting development, not just because Weyl points have been experimentally observed, but also because they endow the photonics crystals which realize them with unique optical properties,» says Ashvin Vishwanath, a professor of physics at the University of California at Berkeley who was not involved in this research.

The authors use the opportunities provided by nano - engineered dielectrics, the so - called Photonic Crystals, to study both how to trap the atoms closer to each other and make them interact through the guided modes in the structure.

This year, Yablonovitch collaborated with Elliot Brown and Chris Parker of the Massachusetts Institute of Technology's Lincoln Laboratory in Lexington, Massachusetts, to reflect signals from a microwave antenna with a photonic crystal.

The results, the authors conclude, «are an important step towards the complete control of photons in [photonic crystals].»

A second report in the current issue of the journal Science describes a 3 - D photonic crystal, which emits light at optical communications wavelengths, manufactured using a different approach.

A team led by Eli Yablonovitch of Bellcore, the research arm of the American regional telephone companies based in Redbank, New Jersey, made the first photonic crystal last year by drilling holes in material that is transparent to microwaves.

Shinpei Ogawa and his colleagues at Kyoto University in Japan made a photonic crystal that resembles a stack of wood with each layer turned 90 degrees with respect to the one below it (see image).

The team used lithography, in which a crystal is built up by depositing one layer on top of another, to manufacture photonic crystals.

These images depict how the photonic sensor translates finger movements into color changes, as the photonic crystal reacts to the change in local humidity caused by the approach of the finger without direct contact.

Chemists at Ludwig - Maximilians - Univeristaet (LMU) in Munich have fabricated a novel nanosheet - based photonic crystal that changes color in response to moisture.

«Usually, electromagnetically induced transparencies in more widely known systems like atomic gases, photonic crystals and metamaterials require tuning a laser's frequencies to match a physical system.

The plasmonic crystal, with its ability to direct light like a photonic crystal, along with its sub-wavelength, metamaterial - like size, in effect hybridizes the two concepts.

Their co-authors around Peter Lodahl from the Niels Bohr Institute in Copenhagen, on the other hand, use waveguides based on photonic crystals.

The optomechanical device used in this experiment is called a «photonic crystal nanocavity» (PCN).

Also waveguides based on so - called «photonic crystals» (two - dimensional structures with periodically arranged holes) can confine light in this way.

The tunability of the photonic band gap of photonic crystals has attracted a significant attention in the last decades, with applications in sensing, lighting, and displays.

Single - crystal thiophene - phenylene (TPCO) and furan - phenylene co-oligomers (FPCO) have a great potential for the application in optoelectronics and photonic devices, since they combine high luminescence and efficient charge transport.

Resume: Single - crystal thiophene - phenylene (TPCO) and furan - phenylene co-oligomers (FPCO) have a great potential for the application in optoelectronics and photonic devices, since they combine high luminescence and efficient charge transport.

In a special dispersion engineered photonic crystal waveguide a pump light pulse of duration of only six trillionths of a second chases a second slower signal light pulse.

Such structures are also found in nature (for example, in green - winged teal feathers and in some butterfly wings) and are known as photonic crystals.

To prove their concept, the researchers used a three - dimensional, microwave - scale photonic crystal constructed from layered alumina rods and containing a full bandgap — a wavelength range in which electromagnetic waves can not transmit.

The photonic - crystal pixels can switch color in about a tenth of a second, according to Arsenault.

Angele says that one drawback of the photonic - crystal approach could be that it depends on the flow of electrolyte in response to electricity.

Previously, the Canadian researchers made photonic crystals using stacks of hundreds of silica nanospheres embedded in a polymer.