Sentences with phrase «of photonic crystals»

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.

Its methods could be used to shrink the size of photonic crystals and to develop tunable metamaterials.

«Basically, we need to recognize that some of these structures can exhibit properties of photonic crystals, and we need to take their physics into account,» Semouchkina says.

«Patterning of photonic crystals is critical for the realisation of photonic crystal displays and for designing the special functions of photonic crystal optical devices.»

Inkjet printing of photonic crystals onto a surface is cheaper, but previous efforts have struggled to integrate responsive photonic crystal inks into such a system.

The ability of photonic crystals to control the flow of light makes them a suitable material for diverse applications including optical communications, biosensors and solar cells.

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.

«This technology allows for high resolution, high precision, fast speed, large scale preparation of photonic crystal patterns,» says Bai.

Left - bottom: Variation of quantum dot emission line frequencies as a function of time due to vibrations of the photonic crystal membrane.

Right: Scanning electron micrograph of a photonic crystal membrane, displaced according to one of the vibrational modes, with red and blue representing positive and negative displacement, respectively.

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.

Not exact matches

Zheng Wang and colleagues at the Massachusetts Institute of Technology have made what's known as a photonic crystal from an array of ferrite rods.

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.

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.

«Being able to create highly functional photonic crystals by low - cost techniques is important for commercial applications, and I believe that the type of flexible and scalable technology demonstrated here has a great future.»

The absorber is attached to a photonic crystal composed of a stack of silicon and silicon dioxide layers that begins to glow at such high temperatures.

«It is particularly refreshing to see simple techniques such as inkjet printing being used to such great effect,» says Thomas Krauss who investigates photonic crystals at the University of York.

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.

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.

Here, a researcher at the Department of Energy's Savannah River National Laboratory holds a photonic crystal made from bismuth germanate.

«Professor Soljačić's group has a track record of rapidly converting new science into creative devices with industry applications, and I am looking forward to seeing how Weyl photonics crystals evolve.»

The achievement was made possible by a novel use of a material called a photonic crystal.

«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.

«Photonic crystal surface - emitting lasers are a very promising candidate for the next generation of high - quality, high - power compact laser systems,» Soljači?

Muševic says the experiments could lead to a new method of making photonic crystals — semiconductors that process light instead of electricity.

Brown and Parker are now working on making the photonic crystal out of silicon, gallium arsenide or indium phosphide, which would allow them to integrate the antenna and electronics on the same chip.

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).

A team from the Massachusetts Institute of Technology (MIT) led by Minghao Qi describe a new method for introducing precise defects into 3 - D photonic crystals, the type of structures that will be necessary for optical quantum information processing.

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

EPFL scientists have now fabricated and experimentally tested a silicon - based «photonic crystal nanocavity» (PCN) that requires an unprecedentedly low amount of energy to operate as a switch.

«We found that the properties that go along with being a photonic crystal can mask the resonance of metamaterials, to the point they can cause unusual refraction — including negative refraction, which is necessary for the development of a perfect lens,» Semouchkina says.

Like metamaterials, photonic crystals are made of many identical cells.

Lotsch and her team have now developed photonic crystals based on nanosheets of phosphatoantimonic acid.

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.

Photonic crystals are artificially built to allow transmission of specific wavelengths.

The heat then flows into a photonic crystal, which is composed of layers of silicon and silicon dioxide.

We also propose the fabrication of 1D photonic crystal and microcavities employing a magneto - optical material as TGG (Tb3Ga5O12).

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.

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.

A photonic crystal is any nanostructure with a regular pattern that influences the motion of photons.

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