and have reported substantial savings from implementing measures as simple as installing motion-sensor lights in hallways and stairwells.
#Purelifi Raises £1. 5m For Tech That Uses Pulsating LED Light To Create Wifi Alternative Purelifi,
Specifically, the tech uses pulsating LED light, imperceptible to the human eye, as a way of sending data from one Lifi-equipped device to another.
If the current is varied slowly the output intensity of the light dims up and down. Because LED bulbs are semiconductor devices, the current,
The accessories in question range from sensors, to lights, to thermostats, to smart outlets and come from a group of accessory-makers with a trusted reputation in the connected home industry.
This Homekit version lets users control lights in specific areas, as well as check with Siri to see
if lights are either on or off in specific areas of the house you might not be able to see at any given moment.
you can control specific rooms or groups of lights separately, or turn everything off with voice commands.
It began by splashing blue strobe lights and repeating the word wesomeenough times to suggest that it might have doubts about the merit of
#Will a Breakthrough Solar technology See the Light of Day? The power unit is a rectangular slab about the size of a movie theater screen.
That raises a disturbing possibilityight a breakthrough technology that could make solar power truly competitive never see the light of day, not because of any lack of technical merit,
The idea is that you can increase the amount of energy any solar cell gathers by putting lenses over the cell to focus light into it.
Some wavelengths of light would be absorbed by one material, and the rest would pass to the semiconductors below, and so on.
light would be delivered to that array via optical fiber, and each of the tiny elements would reflect some of that light to create the light field for a particular point in 3-D space.
The array could be semitransparent to allow a person to see the real world at the same time. Multiple layers of such tiny mirrors would allow the display to produce the illusion of virtual objects at different distances.
and other stimuli such as light and electricity have been around for decades. You can find them in cars airplanes robots and medical implants.
which are common in aircraft because of their light weight and high strength. And though others have worked on carbon composites that can respond to a specific stimulus such as heat Cros says in the new approach the carbon composites can be paired with a variety of shape-shifting materials that respond to different environmental triggers.
It does this via nanoparticles that ease the transition for light as it passes between the parts of an OLED device.
and allows more light out. Various companies are also making progress toward lowering costs. Konica-Minolta and OLED Works (a business formed from Kodak former OLED division) are both developing cheaper new manufacturing techniques.
This fall, Konica-Minolta will start full-scale production of OLED lights on flexible plastic sheets.
which should be faster and cheaper than making OLED lights in batches, as is done now.
and selectively disable the light directed at them and it can do this at up to 140 miles per hour.
or even reduce the glare during a snowfall by distributing light between snowflakes. Improving the ability to drive in the dark
or dim the lights if a pedestrian is crossing but they lack the ability to improve lane illumination.
The ability to control the light with so many micromirrors provides a high-resolution, highly tunable system that can also turn on
Maimone has been working on an entirely new kind of augmented reality device that is light and compact, and offers a wide field of view.
and the eye to modulate the light and form the perceived image, says Maimone. ince the light rays that hit each display pixel come from the same direction,
The light would bounce off the nearby object and return to the sensor with a corresponding intensity.
when it opens to let light through. If it just open for when the blue light is on it looks blue.
In the short term however a much simpler approach stacking different semiconducting materials that collect different frequencies of light could provide nearly as much of an increase in efficiency as any radical new design.
which measures changes in blood flow by shining a light on the skin and measuring how it scatters off blood vessels (this is often done in hospitals with a device that fits over your fingertip).
just above your earlobend the photodetector picks up the light that scatters off nearby blood vessels.
The sheet of glass is covered with reflective materials on the front and the back that trap light inside the glass.
When a beam of concentrated light from the array of lenses hits the material, it heats up part of it,
which in turn allows light to enter the glass sheet. The material remains reflective everywhere else, helping to trap that light inside the glassnd the light bounces around until it reaches the thin edge of the glass,
where a small solar cell is mounted to generate electricity. As the day goes on, the beam of light from the lenses moves and the material adapts,
always allowing light in only where the beam of light falls, and reducing the need to keep the apparatus pointed directly at the sun. Glint CEO Peter Kozodoy says solar power from its devices could cost four cents per kilowatt-hour,
which some of the light is absorbed or reflected en route to the solar cells r
#Cheap and Nearly Unbreakable Sapphire Screens Come into View This fall, rumor has it, Apple will start selling iphones with a sapphire screen that is just about impossible to scratch.
The algorithm alters the light from each individual pixel so that, when fed through a tiny hole in the plastic filter, rays of light reach the retina in a way that re-creates a sharp image.
Researchers say the idea is to anticipate how your eyes will naturally distort whatever onscreenomething glasses
which causes different parts of the lens to refract light differently. While similar methods have been tried before,
which advises users on how much insulin they should take in light of information recorded on their smartphones:
It allows adaptation of regulations and conventions in light of emerging information on benefits, risks,
Each one focuses light onto 29 megapixel chip. The dome is designed so that the fields of view of each of the small telescopes overlap to cover around 10,000 square degrees of sky simultaneously
and for now it works only with a single wavelength of light but it s the first time that anyone has been able to generate electrical current using these high-energy electrons.
and figuring out how to make them with high precision (see Capturing More Light with a Single Solar cell and Nanocharging Solar).
and co. Exactly how light of various frequencies influences plant growth biomass and nutritional content is understood not well.
That they were ever there is discernable only by a close examination of the screen protector in the right light
The project seems more puzzling in light of the hard times at other electric car battery factories in the United states. In 2009,
#Apps by the Dashboard Light Starting next month, many car buyers will be getting a novel feature:
*Carbon fibre bicycle frames are popular with cyclists as they are so light, but they are also liable to crack.
*Carbon fibre bicycle frames are popular with cyclists as they are so light, but they are also liable to crack.
The light was so intense it could be seen with the naked eye even though it was on the atomic scale,
This new type of'broadband'light emitter can be integrated into chips and will pave the way towards the realisation of atomically thin, flexible and transparent displays,
The researchers also found that it was possible to vary the wavelengths of the light by altering the distance of the graphene wafers suspended over the silicon substrate of the chip-a potentially useful way of tuning the light source
The light was so intense it could be seen with the naked eye even though it was on the atomic scale,
This new type of'broadband'light emitter can be integrated into chips and will pave the way towards the realisation of atomically thin, flexible and transparent displays,
The researchers also found that it was possible to vary the wavelengths of the light by altering the distance of the graphene wafers suspended over the silicon substrate of the chip-a potentially useful way of tuning the light source
"This new type of'broadband'light emitter can be integrated into chips and will pave the way towards the realisation of atomically thin, flexible,
while also allowing the light to penetrate to be able to reach the sensors that would in turn,
The light is projected through each well and collected by 96 plastic optical fibers. A custom-designed smartphone app then reads the resulting images
After the light is projected through each well, 96 individual plastic optical fibers in the attachment collect a multitude of images.
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,
or manipulate light for telecommunications applications, or design novel catalysts for speeding up a variety of chemical reactions,"Gang said.
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,
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 opposite direction of polarization is applied (e g. clockwise polarized light with anticlockwise spirals), almost no blue light is emitted.
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.
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
The researchers then beamed light through the holes to create the logo using no ink only the interaction of the materials and light.
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.
The team identified that the peaks were due to interference between the light that was emitted directly from the graphene,
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,
#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,
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
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
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.
The process is relatively faster, safer and green devoid of any toxic substances (just graphite plus concentrated light.
In Bell's days it was a simple, very thin mirror that turned sound waves into modulated light.
however, dictate that such a volume cannot be smaller than the wavelength of the light itself.
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,
After that, the plasmons are reconverted into light, which is fed into a fibre optic cable for further transmission.
and enables the delivery of constant lux levels in the space by managing subtle adjustments as the amount of outside light varies.
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
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
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.
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 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 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 measure chemical and biological molecules using a broadband nanostructure that traps wide range of light,
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
the laser system uses light to ensethe range of molecules that are present in the sample,
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,
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.
interactive holograms comprised of tiny points of light called voxels. Using femtosecond lasers (a femtosecond is a quadrillionth of a second,
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.
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
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'.
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,
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,
whereas LHCB conducted the search with the lights on. The experts described the previous searches as looking for silhouettes in the dark,
whereas LHCB conducted the search with the lights on. This illustration shows an alternative layout for the pentaquark,
whereas LHCB conducted the search with the lights on. This illustration shows an alternative layout for the pentaquark,
and vehicle Lexus has built a car that pulsates with light in time with the driver's heartbeat in order to display the connection between the driver and the car.
Ford develops smart lights...The village where only ROBOTS drive: University launches autonomous driving test track The village where only ROBOTS drive:
The impulses stimulate the retina remaining cells, resulting in the corresponding perception of patterns of light in the brain.
the solar cell obtains adequate light, even in the darkness of winter, said Fraunhofer. On the chip are magnetic
The CSRMESH protocol is used to connect Bluetooth Smart enabled devices controlling lights heating thermostats or even mechanisms to open and close curtains.
Bending light with a microchip The Defense Advanced Research Projects Agency (DARPA) has demonstrated solid-state optical phased array technology in a microchip bringing the ability to bend light to the battlefront.
it is possible to locally adjust the properties of light (using each element) such that through the interference with other elements,
to shape the wavefront of light (dynamically or otherwise) in order to form arbitrary electromagnetic radiation patterns. But in the former case, radar antennas are used as the electrically tunable element.
) The shrinking of light-based technologies presents its own problems. Researchers have been trying to apply the same radar engineering concepts to visible light for many decades.
DARPA breakthrough 3 uses a microchip to control the light, vastly different to existing methods.
in the form of a silicon chip able to bend light which operates in the infrared part of the spectrum.
by applying stronger or weaker currents to the light within the phase shifter, the number of electrons within each light path changeshich, in turn,
changes the timing of the light wave in that path. The timed light waves are delivered then to tiny array elements within a grid on the chip.
The light is projected then from each array in the grid, the individual array beams combining coherently in the air to form a single light beam and a spot on the screen. herefore, thanks to the complexity of the task at hand,
it not unreasonable to speculate that the DARPA technology is an extension of this work,
and to block light, heat or cold. These (as you may have guessed) are quite effective, which has slowed the adoption of relatively expensive and seemingly unnecessary electronically controlled window tinting.
and fully altering the color temperature of transmitted light. They can be integrated easily into new windows
but still allow 90 percent (or more) of the available light in. Or, a setting change could dim the entering light
or change the color of the light along a spectrum from cooler blue to warmer yellow The image to the above right shows the different potential states the window tiles could operate In this is a mock-up based on the results from the single device.
The video below is an exciting presentation from the researchers on where they see this technology ending up.
The interaction of incoming light with each electrophoretic pixel (two electrodes) depends on the position of the particles relative to these electrodes,
and the light can be scattered (white state), or not (dark-state), or somewhere in-between (grey scale).
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