which is invisible to the naked eye that you'd need to put an ultraviolet light on,
and other types of light than some scientists previously thought, and indicates that the star system has passed repeatedly a key threshold for brightness where the outward pressure from radiation by the system is balanced by the inward pull of gravity.
The researchers said they might likewise want to create materials that react to variables other than water, for example, high temperature and light.
it vibrates or lights up, alerting the player to the response in the game. Other players of the game are informed also about the latest messages,
when irradiated with laser light of a specific wavelength. One such'chameleon protein'is called Dendra 2,
which normally emits green light when illuminated with blue light. The emission of Dendra 2 is shifted however into the red
when it is irradiated by intensive violet or ultraviolet (UV) laser light. Two-laser combination Dempsey and Pantazis specifically discovered that
change their colour after irradiation with a certain wavelength of light t
#Fckn. cool Releases Stainless Nanotech Tshirts You don have to worry about the dating night again
or manipulate light for telecommunications applications, or design novel catalysts for speeding up a variety of chemical reactions,"Gang said.
based on photolithography capable of high-resolution patterning on large substrates. There is no need for additional capital investment
The emission of red, green and blue lights was confirmed also in a test involving the application of voltage rather than illumination,
such as using the novel photolithography in a multiple patterning process. An example would be creating an OLED array that adds a fourth color to red
In their study, the researchers used a technique known as x-ray photoemission spectroscopy (XPS) to study the chemical composition of 5-Fu,
#Unique Gold Nano Spirals Could Help Prevent Identity Theft By Will Soutterthe spirals react in a unique way to polarized infrared light,
Because these spirals are smaller than the wavelength of visible light, they exhibit unusual optical properties.
For example, when the spirals are lit up with infrared laser light, they produce visible blue light. In fact, several crystals are known to produce this effect,
which is known as harmonic generation or frequency doubling. The synthetic crystal beta barium borate was previously the strongest frequency doubler known;
however, the new nano-spirals are capable of emitting even higher intensity blue light. The nano-spirals also exhibit a distinctive reponse to polarized light-the amount of blue light produced changes considerably as the angle of polarization is turned through 360°.
°This effect is noticeable with linear polarized light, but even more pronouced with circular polarized light.
When the direction of polarization matches the direction of the spiral, the electrons in the material are pushed towards the middle of the spiral,
and a large amount of blue light is produced. In contrast, when the opposite direction of polarization is applied (e g. clockwise polarized light with anticlockwise spirals),
almost no blue light is emitted. This is because the electrons are pushed to the outside of the spiral,
which creates a destructive interference and weakens the optical effect. The gold nano-spirals in this study were created using scanning electron-beam lithography-platinum
or silver would also be suitable materials, as they have similar corrosion-resistant properties. The tiny amount of metal used in the spirals means they are not expensive to make-however,
significant investment in the advanced lithography equipment is required. Because of the strong frequency doubling response to circularly polarized light,
it would be fairly easy to check for the presence of the spirals on a surface with a device similar to a barcode reader.
The researchers applied light to either ionize or charge neutral ytterbium atoms rising from a tiny heated oven.
in order to measure light scattering patterns of individual bacteria, which can then be used to identify bacteria species for rural areas
fingerprint-like light scattering pattern for any given bacterial cell. They then applied software they designed to the analysis,
This was the first time anyone had applied machine learning to Fourier Transform light scattering data, Park said. They are now looking to extend their initial work to see
The method described in the Scientific Reports article tructural color printing based on plasmonic metasurfaces of perfect light absorptioninvolves the use of thin sandwiches of nanometer scale metal-dielectric materials known as metamaterials that interact with light
Experimenting with the interplay of white light on sandwich-like structures, or plasmonic interfaces, the researchers developed
The researchers then beamed light through the holes to create the logo using no ink only the interaction of the materials and light.
This allowed researchers to create different colors in the reflected light and thereby accurately reproduce the S&t athletic logo with nanoscale color palettes.
Abig cantilever cannot be made to oscillate by freely propagating light, and the effects of chemical changes to its surface on the oscillation frequency would be less noticeable..
#Graphene Used for World's Thinnest Light bulb This clip shows the emission of light from graphene,
"This new type of'broadband'light emitter can be integrated into chips and will pave the way towards the realization of atomically thin, flexible,
it is necessary to produce light in small structures over the surface of a chip.
it has not yet been possible to put the incandescent light bulb-the simplest and oldest artificial light source-onto a chip.
"The visible light from atomically thin graphene is so intense that it is visible even to the naked eye,
At specific wavelengths, peaks could be observed in the emitted light spectrum. The team identified that the peaks were due to interference between the light that was emitted directly from the graphene,
and that which reflected off the silicon substrate and was passed back to the graphene. Kim stated,"This is only possible
so that less energy is needed to attain temperatures needed for visible light emission. These unique thermal properties allow us to heat the suspended graphene up to half of temperature of the sun,
titled'Bright visible light emission from graphene',was published in the Advance Online Publication (AOP) on Nature Nanotechnology's website.
It has the ability to rotate the polarized light plane to the left or right, depending upon the nanocrystal chiral form.
Microscopic, hairlike structures, called cilia, on the squid's light organ select and capture the bacteria from a very complex microbial soup of the ocean."
the bioluminescent bacteria allow the squid to produce light, which then allows the squid to escape from things that might want to eat it,
#New Method to See Inside Supercapacitors at the Atomic Level By using a combination of nuclear magnetic resonance (NMR) spectroscopy
#Researchers Advance Ability to Control and Harness Power of Light on the Nanoscale When a duck paddles across a pond or a supersonic plane flies through the sky, it leaves a wake in its path.
It is possible for something to move faster than the phase velocity of light in a medium
wakes produced as electrical charges travel through liquids faster than the phase velocity of light, emitting a glowing blue wake.
For the first time, Harvard researchers have created similar wakes of light-like waves moving on a metallic surface, called surface plasmons,
"Our understanding of optics on the macroscale has led to holograms, Google glass and LEDS, just to name a few technologies.
and harness the power of light on the nanoscale.""The creation and control of surface plasmon wakes could lead to new types of plasmonic couplers
and lenses that could create two-dimensional holograms or focus light at the nanoscale. Surface plasmons are confined to the surface of a metal.
The team discovered that the angle of incidence of the light shining onto the metamaterial provides an additional measure of control
and using polarized light can even reverse the direction of the wake relative to the running wavelike a wake traveling in the opposite direction of a boat."
and manipulate light at scales much smaller than the wavelength of the light is said very difficult
or UV LIGHT) and more importantly, have a high rate of false-positive readings. Professor Paula Mendes said,
emitting specific wavelengths of light that differ depending on the molecules that are present. This fluorescence is imaged then back onto the camera.
However, a major disadvantage of this compound is that it cannot efficiently absorb light when a huge flat surface is present as that utilized in Gap solar cells.
and UV LIGHT to Isolate, Extract Contaminants In a new paper published this week in Nature Communications,
and ultraviolet (UV LIGHT to quickly isolate and extract a variety of contaminants from soil and water.
Brandl had synthesized previously polymers that could be cleaved apart by exposure to UV LIGHT. But he and Bertrand came to question their suitability for drug delivery,
since UV LIGHT can be damaging to tissue and cells, and doesn penetrate through the skin.
When they learned that UV LIGHT was used to disinfect water in certain treatment plants, they began to ask a different question. e thought
if they are already using UV LIGHT, maybe they could use our particles as well, Brandl says. hen we came up with the idea to use our particles to remove toxic chemicals, pollutants,
because we saw that the particles aggregate once you irradiate them with UV LIGHT. trap for ater-fearingpollutionthe researchers synthesized polymers from polyethylene glycol,
But when exposed to UV LIGHT, the stabilizing outer shell of the particles is shed, and now nrichedby the pollutants they form larger aggregates that can then be removed through filtration, sedimentation,
The process is relatively faster, safer and green devoid of any toxic substances (just graphite plus concentrated light.
Today, huge amounts of data are sent incredibly fast through fibre optic-cables cables as light pulses. For that purpose they first have to be converted from electrical signals,
In Bell's days it was a simple, very thin mirror that turned sound waves into modulated light.
In order to build the smallest possible modulator they first need to focus a light beam whose intensity they want to modulate into a very small volume.
however, dictate that such a volume cannot be smaller than the wavelength of the light itself.
Modern telecommunications use laser light with a wavelength of one and a half micrometers, which accordingly is the lower limit for the size of a modulator.
the light is turned first into so-called surface-plasmon-polaritons. Plasmon-polaritons are a combination of electromagnetic fields
The advantage of this detour is that plasmon-polaritons can be confined in a much smaller space than the light they originated from.
Refractive index changed from the outsidein order to control the power of the light that exits the device,
In the modulator developed by the ETH researchers it is not light beams but rather plasmon-polaritons that are sent through an interferometer that is only half a micrometer wide.
After that, the plasmons are reconverted into light, which is fed into a fibre optic cable for further transmission.
light sources; a pump; and a microfluidics chip with a fluorometer also developed at the University Hospital Zurich.
If UV LIGHT is beamed onto these spiropyran molecules they alter their chemical structure and become charged (polar).
When irradiated with visible light they revert to their original neutral structure. As a result the membrane opens
if irradiated with UV LIGHT and glucose molecules diffuse relatively easily through the membrane from the skin.
If irradiated with visible light considerably fewer glucose molecules pass through the membrane. The measurement involves sticking the measuring head
and irradiating it with visible light; some glucose molecules diffuse through the membrane from the skin.
The process is repeated then with UV LIGHT. The computer then uses these two different readings to calculate the premature baby's blood sugar level.
and enables the delivery of constant lux levels in the space by managing subtle adjustments as the amount of outside light varies.
proximity and ambient light sensors, UV index and ambient light sensors, and capacitive touch sensors, as well as isolated ac current sensors and high-side dc current sensors for power management applications.
and the clip probe can emit light from one side of skin into the tissue and measure the transmitted light from the other side of the skin.
and detect the reflective light at the same side of the skin surface. However it is difficult for them to measure pulse rate
and blood oxygen saturation from the wrist position because the reflective light from the wrist skin is very week
The Taiwan Biophotonic's Reflective Pulse Oximetry Sensor consists of red and infrared LEDS a light detector and a unique DOE component
so that the reflective light from skin tissue are enhanced therefore. It also reduces the noise of stray light in the reflective light at the skin surface.
This technology enables the development of one of the industry's first reflective optical sensor that continuous measures the pulse rate
But some devices are starting to use fast silicon-germanium radio chips operating at millimeter (mm) wavelengths above 10 GHZ.
These include tiny structures that are not visible to the naked eye, such as holograms with a tilt effect.
such as the tilt effects of holograms, can also be checked for the first time, says Brockherde. The special architecture of the sensor opens up room for further applications.
its wavelength spectrum can still be expanded up to the UV or infrared light range. That would be interesting for the recycling of plastics, as well,
and light system-load power measurement, from 0v to 32v. It has the ability to integrate more than two seconds of power-consumption data.
when electromagnetic radiation emitted by an object is absorbed by the Q-Eye sensor, even down to the level of very small packets of quantum energy (a single photon.
Adjusting room temperature, opening or closing roller shutters, turning lights on and off, opening or closing doors and windows, selecting
#Researchers Report Completely Transparent Absorbers at Nonoperational Frequencies The manipulation of light has led to many applications that have revolutionized society through communications, medicine and entertainment.
Devices consuming the energy of electromagnetic radiation, such as absorbers and sensors, play an essential role in the using
While maintaining efficient absorption of light of the desired frequency, all conventional absorbers strongly interact with the radiation of other frequencies,
and sense the light of one or several desired frequency spectra, while being invisible and undetectable at other frequencies.
and light beam transformers",explains Asadchy y
#FLIR GF320 Thermal Camera for Offshore Oil & Gas Leak Detection The FLIR GF320 thermal camera from FLIR Systems is a preventative maintenance tool purpose designed to spot leaks in piping
"And the technique might also shed light onto why new treatments-immunotherapies-that are being deployed in the fight against cancers work in some individuals and not in others.
"Photonic"and"spintronic"computing is the principle of transferring information by light or electron spin.
This new property means that silicon-based light detectors identify spin, so more information can be transferred.
This chirality means that silicon-based detectors are able to detect the spin of electrons and light,
"The whole computer running with light is a distant dream, but some copper interconnectors can be replaced with light and photodetector devices,"Professor Ritesh Agarwal,
who led this study at the University of Pennsylvania, told BBC News."This is only around five years away from now.
that must be reconsidered in light of the presence of something science insisted did not exist t
The retina is a layer of tissue in the back of the eye that converts light into nerve impulses.
So scientists turned to using very low electron doses analogous to taking a photo in very low light
Another challenge was that earlier digital cameras used in CRYO EM detected light not electrons. So when the electron passed through the sample the signal had to be translated into light signals,
and resolution was lost in the process. his combination of the bad detector, blurring from the motion and radiation damage,
Given that, few sensing techniques can match the buzz created by surface-enhanced Raman spectroscopy (SERS.
and measure chemical and biological molecules using a broadband nanostructure that traps wide range of light,
Unfortunately, traditional substrates are designed typically for only a very narrow range of wavelengths. This is problematic because different substrates are needed
because it can trap a wide range of wavelengths and squeeze them into very small gaps to create a strongly enhanced light field.
Instead of needing all these different substrates to measure Raman signals excited by different wavelengths, youl eventually need just one.
One nucleoporin protein in particular has a dramaticnd unanticipatedunction in the formation of neurons from stem cells. ee shone a new light on this class of proteins
Other Diseases Researchers at the University of Adelaide in Australia are using optical spectroscopy to develop a quick,
of a sample of gas. ur device will use broadband cavity-enhanced frequency-comb spectroscopy to achieve sensitivities to molecular concentrations in the low parts-per-million,
the laser system uses light to ensethe range of molecules that are present in the sample,
including the changing ph of the liquid, exposure to electromagnetic radiation, or the induction of mechanical stress all of which can change the properties of a particular hydrogel designed to be responsive to those triggers. hese experimental and theoretical results provide a new conceptual framework for liquid motion confined by soft,
or fat mixed with a fluorescent dye that can be activated by short pulses of light. The finding, reported on 27 july in Nature Photonics1,
could help to broaden how light is used for both medical diagnosis and treatment. The system was devised by Seok Hyun Yun and Matja Humar, both optical physicists at Harvard Medical school in Cambridge, Massachusetts,
making it easier to label cells with light, says Jeffrey Karp, a bioengineer at Brigham and Women Hospital in Boston,
Yun and Humar report that they can vary the wavelength and tag individual cells using fluorescent polystyrene beads of different diameters,
If the cats glowed under a special light the transfer and expression was successful. Even better news is that the transgenic cats have passed successfully both traits (glowing and resistance) along to their offspring.
It is so thin light and flexible that it can be attached to the skin where it will bend
--so light they can be laid on a soap bubble without breaking it. They can also withstand extreme bending with radii of less than three micrometres able to be crumpled like a piece of paper.
When the wearer moves the sensor close to a magnetic field the sensor is shown to be operational when the LED array lights up.
-and nanoscale structures onto the surface of metal--building on earlier work that used laser-patterning to absorb light to render metal black--creating a material that both absorbs light
which absorb solar energy in the form of heat and light, since the surface is highly efficient at absorbing, rather than reflecting, both.
#Holograms You Can Actually Touch Are Here It every science-fiction lover dream, holograms tangible enough to touch.
interactive holograms comprised of tiny points of light called voxels. Using femtosecond lasers (a femtosecond is a quadrillionth of a second,
the team can make holograms that are safe to touch, Popular Science reports. The images are three-dimensional, with resolutions up to 200
when touched the hologram texture feels like sandpaper. Although previous studies have used nanosecond and femtosecond lasers to create images,
and hearts that break when touched. hologram To create their hologram, researchers fired their femtosecond laser through a spatial light modulator,
A camera underneath the hologram captures user interaction, allowing the dots to respond to being ouched.
making the hologram exponentially safer than previously thought. Ochiai says this is machine is just a proof of concept,
and now his team will work to make the holograms larger. Theye limited by the size of the spatial light modulator
These mirrors bounced the light from objects in front of the wearer approximately four times around this ring before sending the image to the retina.
so that the only light that hits their retina is created the light by the magnified process.
#Nasa spots most luminous galaxy in the universe-shining with the light of more than 300 TRILLION suns A dazzling galaxy that shines with the light of more than 300 trillion suns has been discovered by astronomers.
'This dazzling light may be from the main growth spurt of the galaxy's black hole.''Supermassive black holes draw gas
The light is blocked by surrounding cocoons of dust. As the dust heats up, it radiates infrared light.
Immense black holes are common at the cores of galaxies, but finding one this big so'far back'in the cosmos is rare.
Because light from the galaxy hosting the black hole has travelled 12.5 billion years to reach us,
When a black hole feeds, gas falls in and heats up, blasting out light. The pressure of the light actually pushes the gas away
creating a limit to how fast the black hole can continuously scarf down matter. If a black hole broke this limit,
Called the Tactical Assault Light Operator Suit (Talos it effectively gives its wearer superpowers, such as superhuman strength and a way of deflecting bullets,
These mirrors bounce the light from objects in front of the wearer approximately four times within this ring before sending the image to the retina.
Prime minister David cameron said the new unit is aimed at'shining a light on the web's darkest corners'as he announced a package of measures to tackle online child abuse.
The son of British inventor Sir James Dyson has created an innovative light that he claims will last,
Jake Dyson CSYS task light, which comes in three different forms, uses'Heat Pipe'technology to direct heat away from LEDS to stop them becoming dimmer and less efficient over time.
His gripe with conventional lights is that they fail to protect LEDS from heat, exposing them to temperatures up to 130°C (266°F)
meaning LEDS produce worse quality light over time. To solve this problem, he has designed CSYS task lights that have unique technology
in order to direct heat away from their LEDS. perating at 55°C (131°F), they don lose quality or efficiency for 37 years, according to his website.
which produce an even spread of light, so they are highly efficient without using diffusers.
Dyson has also come up with a way get the lights, which come in clamp, desk and standard light forms,
CSYS task lights adjust horizontally, vertically and rotationally with the touch of a fingertip, the website says.
While conventional lights usually rely on springs and tension to stay in position, the new design uses gravity.
The lights are also touch sensitive so that people can dim them easily, while the CSYS lights remember the last lighting level.
The LEDS use a fifth of the energy of a conventional halogen bulb and because there are few bulbs to replace in a lifetime,
Dyson claims the light could save users up to £1, 200 ($1, 835) over 37 years.
On coming up with the design, Dyson said that his starting point was to investigate the failures of modern lights
Samsung's Mirror Display technology also does need not the ambient backlight for displaying on-screen images that LCD technology does.
A tabletop device called the Holus converts any digital content into 3d holograms, which feature in the sci-fi film series in the form of chess sets, maps and warning messages.
so developers can convert digital content into holograms.''Four distinct are stitched together by algorithms provided in our applications and software development kit (SDK),
while Leap Motion controllers can also be used to manipulate holograms. Vincent Yang, CEO, explained: ur vision with Holus was to create an open platform that was accessible to absolutely everybody. olus has unlimited potential that allows people to tailor everything to their personal needs.
The ability for the super-thin material to produce light is seen as a key step to create super-thin computer and TV screens.
'He added that the light'will pave the way towards the realisation of atomically thin, flexible and transparent displays'.
Traditional displays like those on a mobile phone require a light source, filters and a glass plates.
flexible, colour-changing displays that don't need a light source-their skin.''That was the motivation: Can we take some inspiration from biology
The new method doesn't need its own light source. Rather, it reflects the ambient light around it.
A thin liquid crystal layer is sandwiched over a metallic nanostructure shaped like a microscopic egg carton that absorbs some light wavelengths
and reflects others. The colours reflected can be controlled by the voltage applied to the liquid crystal layer.
23:40 GMT, 29 june 2015 From Princess Leia in Star wars to a holographic Tupac at the 2013 Coachella festival, holograms have fascinated scientists for decades.
But because they use lasers to project the hologram, it makes interacting with the images potentially dangerous-until now.
Researchers have created 3d holograms using lasers that fire at a quadrillionth a second, and they respond to touch without burning the user's skin.
Scroll down for video Researchers from the University of Tokyo used femtosecond lasers to create 3d holograms that are safe to touch
Holography uses lasers to record the brightness, contrast and dimensions of an image and project this image, typically in 3d,
what's known as a spatial light modulator and a series of lenses into a Galvano scanner.
dubbed Fairy Lights. A camera under the hologram is then able to capture and record a user's interactions,
allowing the voxels to be touched.''In reality, when a person touches the voxels the finger generates a shockwave,
An illustration in the research paper, called Fairy Lights in Femtoseconds: Aerial and Volumetric Graphics Rendered by Focused Femtosecond Laser Combined with Computational Holographic Fields,
'The holograms and workspace of the system are up to 1cm3 in volume but the researchers said they could be scaled up depending on
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