Wavelength

Long wavelength (12)
Particular wavelength (9)
Short wavelength (10)
Single wavelength (5)
Wavelength (523)

Synopsis: Domenii: Photonics & laser: Photonics & laser colaterale: Wavelength:

because their wavelength is much shorter than that of visible light. On a much smaller scale, some of the X-rays are absorbed by the atoms that make up the drops,

When light at a specific wavelength is absorbed by the gas of interest localized heating of the molecules leads to a temperature

it emits light of a particular wavelength, which in this case is tuned to match the bandgap of the PV cell mounted nearby.

The group from CEA-Leti and III-V lab also demonstrated single wavelength tuneable lasers with a 21 ma threshold at 20o Celsius, a 45 nm tuning range and a side mode suppression ratio larger than 40 db over the tuning range.

which only respond to particular wavelengths. Enter European and Indian scientists, who teamed up to offer the world an innovative solution.

This requires each device being sensitive to a particular wavelength. The photodetector developed by the international consortium is merely the size of a pin head

The light causes the specially designed nanotubes to fluoresce at wavelengths of 1, 300-1, 400 nanometers;

or other colors in response to particular wavelengths of light. This is what produces the colorful cellular images that are so common in biology research.

The prototype circulator is 2 centimeters in size#more than 75 times smaller than the wavelength of operation.

because it s a strongly absorbing material at a wavelength of 1550 nanometers and it gives a good dose of losspeng explains.

The detector which is interconnected based on the carbon atoms in graphene can sense light over an unusually broad range of wavelengths including terahertz waves between infrared

Light of a specific wavelength can excite a plasmon and LANP researchers often create devices where plasmons interact sometimes with dramatic effects. ith plasmonic gratings

The process uses a dozen lasers each with a wavelength controlled to the ninth decimal point. f you wanted to put a picture of something high-tech in the dictionary this is

and his team to absorb specific nonvisible wavelengths of sunlight. e can tune these materials to pick up just the ultraviolet

and the near infrared wavelengths that then glow at another wavelength in the infraredhe says.

When a laser passes through the powder its wavelength is absorbed not fully. Instead some of the light from the laser scatters and the path length increases because of this multiple scattering#something scientists refer to as the aman effect. his scattered light is emitted then from the powder in a strong diffuse form that is visually similar to a bright LED light.

The light causes the specially designed nanotubes to fluoresce at wavelengths of 1300-1400 nanometers;

which work by detecting shifts in the wavelength of light Zhang says. he difference in intensity is similar to going from a light bulb for a table lamp to a laser pointer.

and wavelength, says Andrew Barron, professor of chemistry and of materials science and nanoengineering at Rice university.

or pores that are smaller than the wavelength of light. The texture allows the efficient collection of light from any anglerom sunrise to sunset.

When light at a specific wavelength is absorbed by the gas of interest localized heating of the molecules leads to a temperature

As molecules spin in space they emit light of very specific wavelengths or colors called mission lines. he precise wavelength is dictated by the composition and structure of the molecule.

Studying the emission lines observed by the SPIRE instrument allows astronomers to study the chemistry of outer space.

because the wavelength of light is too large to fit in tiny components needed for integrated circuits. Nanostructured metamaterials however are making it possible to reduce the wavelength of light allowing the creation of new types of nanophotonic devices says Vladimir M. Shalaev scientific director of nanophotonics at Purdue s Birck Nanotechnology Center

and professor of electrical and computer engineering. he most important thing is that we can do this with a very thin layer only 30 nanometers

and this is unprecedentedshalaev says. his means you can start to embed it in electronics to marry it with electronics. he layer is about 1/23rd the width of the wavelength of light used to create the holograms.

A small change in the size of a quantum dot as little as a fraction of a nanometer##changes its fluorescent wavelengths by a measurable factor

Kono says the team didn t understand at the time why the wavelength of the burst changed over its 100-picosecond span.

Now they Do in the new results the researchers not only described the mechanism by which the light s wavelength evolves during the event (as a Fermi-edge singularity)

The researchers found the emitted light shifted toward the higher red wavelengths as the burst progressed. hat s cool about this is that we have a material we excite it with a 150-femtosecond pulse wait for 100 picoseconds

which is beamed then to the solar cell. ssentially we tailor the light to shorter wavelengths that are ideal for driving a solar cellfan explains. hat raises the theoretical efficiency of the cell to 80 percent

in optical resonators the pitch corresponds to the color or wavelength of the lightsays Kerry Vahala professor of information science and technology and applied physics at the California Institute of technology (Caltech.

The new device is an improvement in this regard due to the inclusion of#slot#nanoantennas cavities that are etched into the gold layer at intervals that correspond to wavelengths of mid-infrared light.#

#Our antennas can be engineered to absorb at any wavelength.##While only a proof-of-concept at this stage future research will demonstrate the device s capabilities as a low-cost way of analyzing individual proteins and gas molecules.

It's these approximately 100-nanometers-wide slits that allow the device to differentiate between colors with plasmons waves of electrons that flow across metal surfaces) excited by light of a specific wavelength.

LED LIGHTS can be tuned to emit only a narrow wavelength of light they can be combined to create perfect lighting that provide light on the ideal spectrum for a plant s growth.

Evidence is emerging that specific wavelengths of light have distinct effects on crop yield, quality, and even pest and disease resistance.

Itl include optimized lights set to a wavelength to grow perfect plants and specialized air-conditioning that keeps temperature and humidity set to a constant level.

small organic molecules to absorb specific nonvisible wavelengths of sunlight.""We can tune these materials to pick up just the ultraviolet and the near infrared wavelengths that then'glow'at another wavelength in the infrared,

"Lunt explained. The"glowing, "which does not occur in the visible spectrum, is guided to the edge of a clear plastic panel where it is converted then to electricity using thin strips of photovoltaic solar cells.

or closer together than the wavelength of light used in the microscope to illuminate them.

Importance for biology One classical way to image smaller objects without using entangled photons is to use shorter and shorter wavelengths of light.

but the wavelengths in this experiment are infrared in the and so would not harm the organism.""There are challenges, however.

when organisms absorb high-energy short wavelength light (such as ultraviolet light) then re-emit that light at a longer wavelength.

But stronger fields need higher frequency, shorter wavelength radio-frequency signals, and wavelengths shorter than the size of the subject a human head, for example lead to some areas producing either a zero signal (blind spots) or a very strong signal (hot spots).

Magnets with strengths of 7 Tesla can produce super-clear images in some places, but because the corresponding radio-frequency wavelength is just 12 centimetres in human tissue,

the results are dark and undecipherable in others. Pruessmann's technique uses a travelling wave rather than a standing wave,

They work by detecting how molecules collectively resonate#like guitar strings that vibrate together#with electromagnetic waves of specific wavelengths.

But longer, microwave wavelengths#for applications such as airport scanners#require a different approach, because there are no materials that can serve as micromirrors in that part of the spectrum.

But here, the source sequentially sends out microwaves of different wavelengths. The returning waves are collected then by the metamaterial aperture.

An algorithm compiles data from each wavelength to generate a complete image every 0. 1 seconds.

in which a mix of quantum dots tuned to absorb different wavelengths of light could capture more of the energy in the solar spectrum.

The resulting white light is more intense at the wavelengths of these three specific colours than the white light made by a phosphor-coated LED,

or using wavelengths of light that are absorbed easily by chlorophyll, increases the rate of photosynthesis and produces a larger current through the transistor.

which means that it can be used to visualize objects much smaller than the wavelength of the light being used.

if you are using blue-green light with a wavelength of 500 nanometers, you can see anything smaller than 250 nanometers. nfortunately,

and corresponded to the desired absorption of light at various wavelengths. When light was shined onto the structure

the holes allowed certain wavelengths through at specific locations, producing the colorful logo. nlike the printing process of an inkjet or laserjet printer,

This produces luminescence at two separate wavelengths that have lifetimes ranging from 277 millionths of a second to about 100 billionths of a second.

and a"resonant cavity"that will ring with light waves of particular wavelengths much as an organ pipe will ring with sound waves of distinct frequencies.

Crucially, each laser shines at a couple of distinctive wavelengths depending on the precise size of the sphere,

Unlike BICEP2 Planck observes at a range of different wavelengths. Because emissions from dust vary with wavelength this should allow researchers to better separate out the contributions to polarised light from dust.

For sure this BICEP2 result will put even more pressure on Planck's next release says Fabio Finelli a Planck team leader at Italy's National Institute for Astrophysics in Bologna.

or shine but their relatively long wavelengths limit the information they can transmit in a given time period.

So LADEE will carry a laser with a near-infrared wavelength that is thousands of times shorter as part of the Lunar Laser communication Demonstration experiment.

But using shorter wavelengths for communication presents new challenges. Laser beams do not spread out as much as radio waves

and colleagues observed the star at three wavelengths: one sensitive to dust grains a millimetre across

which can be identified with great precision by the wavelength of their fluorescent emissions. The new method produces the combination of desired properties in as small a package as possible Bawendi says which could help pave the way for particles with other useful properties such as the ability to bind with a specific type of bioreceptor or another

It should absorb virtually all wavelengths of light that reach Earth s surface from the sun but not much of the rest of the spectrum since that would increase the energy that is reradiated by the material

Most of the sun s energy reaches us within a specific band of wavelengths Chou explains ranging from the ultraviolet through visible light and into the near-infrared.

or when its distance is a specific multiple of the wavelength of sound. Maintaining that precise distance is a tall order

At the core of the Terablade is a power-scaling technique known as wavelength beam combining (WBC

when electrically charged cause electrons to create photons of the same wavelength or color traveling in the same direction.

and near-infrared wavelengths that can be focused tightly to a very small spot but with little power Huang explains.

Overlapping many similar beams at differing wavelengths however produces a beam that focuses on a small spot making it very intense.

And the number of overlapping beams with differing wavelengths can be very high. In the early 2000s Huang Chann and Lincoln Laboratory colleagues built a few prototype lasers based on WBC technology.

or spatial beam combining that joins together the beams of similar wavelengths. As the number of diode lasers increases the beam quality degrades resulting in a large focused spot limiting the beam s intensity.

since the distance between sensors is proportional to wavelength. In the latest issue of IEEE Transactions on Antennas and Propagation researchers in MIT s Research Laboratory for Electronics describe a new technique that could reduce the number of sensors required for terahertz

As long as the distance between sensors is no more than half the wavelength of the incoming wave that calculation is fairly straightforward a matter of inverting the sensors measurements.

But if the sensors are spaced farther than half a wavelength apart the inversion will yield more than one possible solution.

their color (or wavelength), polarization, and direction. While it has long been possible to selectively filter light according to its color or polarization,

operating as it does on the length scale of a wavelength. The team also included MIT research scientist Ivan Celanovic;

but carbon nanotubes could act as artificial antennae that allow chloroplasts to capture wavelengths of light not in their normal range, such as ultraviolet, green,

and colleagues took advantage of the fact that silicon is infrared transparent to and near-infrared wavelengths of light.

but for the new system the researchers used a titanium sapphire laser that can be tuned to infrared and near-infrared wavelengths.

For this study, the researchers found that light with a wavelength of 980 nanometers worked best.

if the wavelength of light is increased into the infrared range. The researchers are also working on modifying the system

says, he combination of these two materials provides a unique system that allows the manipulation of optical processes. he combined materials create a tuned system that can be adjusted to allow light only of certain specific wavelengths

because the material naturally works at near-infrared wavelengths, this could enable new avenues for infrared spectroscopy,

Conventional pigments produce colors by selectively absorbing light of different wavelengths#for example red ink appears red

A similar effect can be realized at a much smaller scale by using arrays of metallic nanostructures since light of certain wavelengths excites collective oscillations of free electrons known as plasmon resonances in such structures.

The plasmon resonance wavelength varies sensitively with the dimensions of the nanostructures. Consequently by varying the diameter of the four aluminum nanodisks in a pixel (all four nanodisks having the same diameter) the scientists were able to produce about 15 distinct colors#a good start

Sequential printing of different types of QDS in a multilayer stack or in an interdigitated geometry provides strategies for continuous tuning of the effective overall emission wavelengths of the resulting QD LEDS.

The researchers control the nanolithography by altering the size of the nanosphere the duration of light exposures and the angle wavelength and polarization of light.

metal nanostructures can scatter different wavelengths (colors) of light due to the fact that the tiny nanostructures themselves resonate at different wavelengths.

Because these shapes are biaxial they exhibit plasmonic resonances at different wavelengths for each axis with the colors determined almost entirely by the dimension of the axis parallel to the polarization direction.

rather than combined into a single purple wavelength. So-called"nonlinear"materials are capable of this kind of mixing,

although the basic technique was developed using short wavelength"hard"X rays that have difficulty distinguishing two closely related polymers,

much better results can be obtained using longer wavelength X rays that are more sensitive to differences in the molecular structure.**

Its extreme thinness enables nearly all light to pass through across a wide range of wavelengths.

Both the diameter of the fibre and the particle are even smaller than the wavelength of the emitted light."

Kim also made his nanosheets responsive to near-infrared light a wavelength of light that is harmless to humans.

Depending on the shape of the nanosheet the near-infrared radiation bounces back with a different wavelength.

It should absorb virtually all wavelengths of light that reach Earth's surface from the sun but not much of the rest of the spectrum since that would increase the energy that is reradiated by the material

Most of the sun's energy reaches us within a specific band of wavelengths Chou explains ranging from the ultraviolet through visible light and into the near-infrared.

The resulting external quantum efficiency of these solar cell structures in the 900 to 1150 nm wavelength range was higher than devices with the QD layer.

the wavelength of the light shifts and is amplified by the microsphere and nanowire. This shift can be measured.

which absorbs light equally at all wavelengths the light absorption in graphene nanoribbons can be increased enormously in a controlled way

Using the special properties of graphene a two-dimensional form of carbon that is only one atom thick a prototype detector is able to see an extraordinarily broad band of wavelengths.

Included in this range is a band of light wavelengths that have exciting potential applications but are notoriously difficult to detect:

The light we see illuminating everyday objects is actually only a very narrow band of wavelengths and frequencies.

Terahertz light waves'long wavelengths and low frequencies fall between microwaves and infrared waves. The light in these terahertz wavelengths can pass through materials that we normally think of as opaque such as skin plastics clothing and cardboard.

It can also be used to identify chemical signatures that are emitted only in the terahertz range.

which emitted light of the same wavelength. We have found that there is pronounced nanoscale light-matter interaction between plasmons

which are hundreds of times smaller than the wavelengths of light to map the landscape all the way down to molecules and even atoms.

Light of a specific wavelength can excite a plasmon and LANP researchers often create devices where plasmons interact sometimes with dramatic effects.

which control the light wavelength interference. In traditional holograms, these fringes are larger than half the wavelength of light.

In contrast the fringes here are replaced with nanoparticles smaller than half the wavelength of light.

The researchers showed that the narrower band diffraction, which creates the colorful effects, is produced by plasmonic-enhanced optical scattering of the nanostructures.

such as polarization and wavelength, which can be controlled simultaneously. With twice the number of nanoparticles, the total amount of binary information stored can exceed the traditional limits of diffraction."

which work by detecting shifts in the wavelength of light.""The difference in intensity is similar to going from a light bulb for a table lamp to a laser pointer,

NASA's Solar Dynamics Observatory captured the M9. 4-class event at a wavelength of 131 Angstroms

#The difference lies in Antico's cones structures in the eyes#that are calibrated to absorb particular wavelengths of light

People who have regular color vision have tuned three cones to the wavelengths of red green and blue.

Based on Antico's genes Jameson has determined that Antico's fourth cone absorbs wavelengths that are reddish-orangey-yellow but

Since the tests aren't calibrated for this wavelength#empirically demonstrating tetrachromacy is still really difficult.

which is roughly half the wavelength of light. With a wavelength of 550 nanometers typically used that means most microscopes can only see about 0. 2 micrometers (or about the width of a bacterium) according to Abbe.

But the best thing about limits in science is that they can almost always be surpassed.

ED lighting has three different wavelengths of red blue and green. This system can control the illumination strength according to the stage of plant growth.

The investigation showed the streaks absorb light at specific wavelengths associated with chemicals known to pull water from the Martian atmosphere in a process known as deliquescence

For starters, they sent multiple wavelengths of light through the waveguide at the same time, allowing them to write

The wavelength of this radiation is around 1000 times shorter than the electromagnetic radiation used by current particle accelerators the Large hadron collider uses 400 MHZ microwaves everything else on the terahertz accelerator can also be 1000 times smaller.

including the use of reconfigurable focal-plane sensors or shrinking the transmission wavelength from microwave (3 cm) down to millimeter wave (5 mm),

the wavelength is long enough that we can fabricate waveguides with conventional machining techniques, provide accurate timing,

because the researchers use a red dye to tune the wavelength of light it captures

because the researchers use a red dye to tune the wavelength of light it captures

which have a much shorter wavelength than the incident sound waves that produce them, and since the evanescent waves decay very fast as they propagate,

and the method needs to be refined before it can be applied in practice. ecause the size of the polymer structure has to be adjusted to the operational wavelength,

Their surfaces bear features much smaller than the size of a wavelength of light. They redirect incoming light waves,

and chemical materials are caused by wavelength selective light absorption in organic molecules. Currently, colors on computer and iphone screens come from dye materials pre-placed on the pixels.

because one wavelength of light is absorbed completely, "explains Dr. Guo, while his student holds a collection of color samples."

A lot of colors you see in nature are due to wavelength selective light absorption in organic molecules which cannot withstand high temperatures,

if we want to see an object smaller than the wavelength of visible light, we cannot use conventional optics.

This creates highly bundled light a hundred times smaller than the wavelength of light, which otherwise represents the limit of"normaloptics with lenses and mirrors. n principle,

we can use the entire wavelength spectrum of near-field microscopy, from ultraviolet to the terahertz range, says Dr. Susanne Kehr from the TU Dresden. he focused light delivers energy to the sample,

Universal in every respectith our nanoscope considerable wavelength coverage, dynamic processes can be studied with the best suited wavelengths for the specific process under study.

Our colleagues at the Freie Universität Berlin have, for example, the ambitious dream of tracking structural changes during the photocycle of an individual membrane protein at specific wavelengthes in the infrared spectrum,

The probe pulse wavelengths can, in principle, reach from the low terahertz range to the ultraviolet range.

whose spatial resolution surpasses a theoretical limit imposed by the wavelength of light, offering extraordinary visual detail of structures inside cells.

The combined effect of those patterns leads to final images with 62-nanometer resolution--better than standard SIM and a threefold improvement over the limits imposed by the wavelength of light."

25 nm is typical nowhere near the wavelength limit, according to the research team. Electron microscopies cannot simultaneously achieve high spatial and temporal resolution.

short wavelength light sources fill the critical need for metrology to bridge this gap. As an example,

the shortest wavelength laser in widespread use is the excimer laser around 193 nm. This means that in 55 years

the wavelength of widely accessible lasers has been reduced by less than a factor of 4. The University of Colorado work employs coherent,

or laser-like, beams of EUV light with wavelength at 30 nm nearly an order of magnitude shorter that the excimer, achieving very high-contrast images with a resolution of 40 nm laterally

Senior Science Director of Nanomanufacturing Materials and Processes at SRC. he resolution will only continue to improve as the illumination wavelengths decrease. w

Optical approaches cannot resolve objects below certain wavelength limits, while non-optical approaches like electron microscopy (EM) can only study nonliving cells.

which at less than 200 nanometers (nm) in size fall below the wavelength limit of what is observable using visible light.

which can only see objects that are larger than the wavelengths of light with which they are viewed.

Rectennas, developed in the 1960s and 1970s, have functioned at very short wavelengths of 10 m. Since then,

researchers have been trying to create devices at optical wavelengths with great difficulty. The antennas had to be sufficiently small enough for coupling optical wavelengths

and the rectifier diode had to have the ability to operate rapidly to capture electromagnetic wave oscillations.

Nanoparticles with sizes the order of a wavelength interact with light in specific ways. A young investigator group at Helmholtz-Zentrum Berlin, led by Professor Martina Schmid,

It is happening across all light wavelengths from the ultraviolet to the infrared.''The universe is fated to decline from here on in,

is the largest multi wavelength research to date. Researchers collated data from the world most powerful telescopes, including the VIST and the VST at Chile Paranal Observatory, Nasa GALEX, WISE and a European space agency Herschel telescope.

In the areas of surgery and molecule detection, for example, they offer significant advantages compared to traditional, shorter-wavelength lasers.

At these wavelengths, the laser light is absorbed easily by water molecules, which are the main constituents of human tissue.

and their room lights happened to emit at just the right wavelength. The electric field from the polarized strontium titanate was leaking into the topological insulator layer,

measured by how fast the crests of a wavelength move, known as phase velocity. This speed of light increases or decreases depending on the material it's moving through.

When light passes through water, for example, its phase velocity is reduced as its wavelengths get squished together.

Once it exits the water, its phase velocity increases again as its wavelength elongates. How much the crests of a light wave slow down in a material is expressed as a ratio called the refraction index--the higher the index,

or all troughs--stretching out in infinitely long wavelengths. The crests and troughs oscillate only as a variable of time

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