Sentences with phrase «photonic crystal nanocavity»

The photonic crystal may not be merely shunting energy from long to short wavelengths.

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

This leaves behind a porous, weblike polymer structure, which now acts as the photonic crystal.

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.

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.

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

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

Dharanipathy UP, Minkov M, Tonin M, Savona V, Houdré R. High - Q silicon photonic crystal cavity for enhanced optical nonlinearities.Applied Physics Letters 08 September 2014.

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

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.

LMU chemists have developed a photonic crystal from ultrathin nanosheets which are extremely sensitive to moisture.

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

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.

«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.

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.

American researchers have now used a photonic crystal as a reflector for a miniature microwave antenna which could one day be fabricated on a single chip along with control electronics.

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 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.

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.

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.

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.

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

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

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.

Such omnidirectional reflectance for dielectric structures is associated with three - dimensional photonic crystal nanostructures that sustain a so - called complete photonic band gap.

A thin 3D photonic crystal with a diamond - like nanostructure is illuminated by white light from any incident direction (black arrow).

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

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.

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

Carbon nanotube above a photonic crystal waveguide with electrodes.

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

To emulate this, the team made their photonic crystal ink using mesoporous silica nanoparticles, which have a large surface area and strong vapor adsorption capabilities that can be precisely controlled.

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

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.

Tiny, mirrorlike structures known as distributed Bragg reflectors reflect this fluorescent light as well as all the other light the photonic crystal allows to pass through.

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.

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.

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.

Photonic crystals could one day direct light through super-miniaturized optical computer chips.

«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.»

«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 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.

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.

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

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.