which keep the lights on for millions of homes and businesses. With a start-up budget of#2. 7m granted by the Islington Council
With the Utah system a bus could charge from coils placed under the road surface where passengers load or at traffic lights.
At the start of this year, Meeker and his cofounders gave one of their 30 employees the green light to start#The Barkpost.
The 3d printed metal gun was constructed using a laser sintering process capable of shaping tougher metals like stainless steel.
The window-mounted device uses a high-frequency laser microphone to pick up bothersome sounds then sends out sounds of its own at 180 degrees,
and#d. light, a for-profit seller of solar lights, recently reached its1 millionth customer. Video)##If these numbers haven t raised the attention of institutional investors,
allowing, for instance, a consumer to control his TV, house lights, and AC unit from a smartphone#or augmented reality devices like Glass##isn t actually all that far off.
##Clocking in at a tiny eight-inches long and 2. 1 ounces light, the PD-100 Black Hornet, was previously a mere#prototype back in 2009,
expect it to use its core data-handling skills to shed new light on familiar age-related maladies.
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's on screen something glasses
which causes different parts of the lens to refract light differently. While similar methods have been tried before,
#New LED light technology sheds light on the future of food LED growing lights, delivering sunlight whatever the weather.
We need to make better use of land, light and logistics for an increasingly urban population.
or grow indoors with the help of artificial lights. Vertical farming is promising because it requires no soil,
and environmental controls that regulate temperature, humidity and light to produce vegetables, fruits and other crops year-round.
Considerable energy is required to power a closed, indoor greenhouse facility s artificial lighting, heating and cooling
This kind of artificial light has an extremely high photoelectric conversion efficiency consuming only one eighth the power of incandescent lamp, half of the power of fluorescent lamp,
and can produce light of varying intensity. Because it produces less heat, the light can be moved closer to the plants.
This increases efficiency, not just in terms of energy use but by allowing layers of growing plants to be packed more densely, making more efficient use of space.
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.
There is potential for these multifunctional techno-greenhouses built around LED grow lights to increase the quality of the food we eat
and the amount that we can grow with the same land and resources: the very 21st-century problems we now face
Blinding lasers Desert Wolf s website states that its Skunk octacopter drone is fitted with four high-capacity paintball barrels, each capable of firing up to 20 bullets
000 bullets at a time as well asblinding lasers and onboard speakers that can communicate warnings to a crowd.
"So Vessyl understands that you drank 20 ounces of Red Bull or half a can of Miller Light,
While#hologram#technology has been improving in recent years along with#3d scanning, its function is mostly to disrupt#3d printing#as a rapid-prototyping system.
At that point, they step into the hologram space, which consists of walls with grids on them that the phone uses to track with technology similar to#Google s Tango.
Lowe s foray into high tech capitalizes on recent developments in holography. Ten years ago, the holodeck#seemed like a dream.
holography#made a splash#last year when University of Illinois computer scientists showed off an immersive holograph room, CAVE2, that projected images on an array of LED screens.
your light adjusts to the level that you want it. All of that can start to happen
#Ostendo Technologies chip to bring holograms to smartphones Ostendo chip that can produce a hologram Virtual reality won t require strapping a bulky contraption to your head in the future.
Other companies have shown they can project floating images that appear to be holograms, but many involve large machines employing a system of mirrors to direct light with limited viewing angles.
For instance, the lifelike image of the late rapper Tupac shakur, which graced the Coachella music festival stage in 2012,
powered by a computer chip that can control the color, brightness and angle of each beam of light across one million pixels.
or tables that can project hologram-like images. So what happens in a world where 3-D
The research team also included scientists at Fudan University in Shanghai, the Chinese Academy of Sciences and Diamond Light source.
The second paper presents designs that show how to build electrical components (such as resistors, inductors, capacitors, sensors and actuators) with self-folding laser-cut materials.
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.
and the neon lights of Shibuya shining bright. No, you won be able to see the most impressive part,
The mirrors will be positioned so they can direct light onto two photovoltaic panels 24 hours a day.
by using infrared light). Scientifically viable in 2015; mainstream in 2018; and financially viable in 2019.
vertical farms could augment natural light using energy-efficient lighting. The advantages are numerous, including year-round crop production, protection from weather, support urban food autonomy and reduced transport costs.
#Cree LED tubes will make fluorescent lights seem old fashioned In the scramble to replace traditional forms of illumination with greener LED sources,
fluorescent overhead lights. The new Cree T8 bulb looks very much like the traditional T-8 fluorescent tube wee been using since the 1970s.
It based on near-infrared spectroscopy, which means it reflects light onto an object, then collects and analyzes the light reflected back.
The Kickstarter launched Tuesday morning with several funding levels: a fully operational SCIO starts at $149,
While scientists and researchers use near-infrared spectroscopy on a regular basis, there are lots of consumers that would love to know more about the chemical composition of the world around them,
shine its blue light onto an object you want to analyze. In a few seconds, the associated smartphone app will take the spectrometer reading,
#Scientists develop an off-switch for the brain Scientists have developed essentially an ff-switchfor the brain by using light pulses to effectively shut down neural activity.
In 2005, Stanford scientist Karl Deisseroth discovered how to switch individual brain cells on and off by using light in a technique that he dubbed ptogenetics,
The Dash is part barcode scanner, part voice recorder. It connects to Amazon grocery delivery service, Amazonfresh,
And like that, the bulb lights up. Wireless homes Don worry about getting zapped: Hall assures that the magnetic fields used to transfer energy are erfectly safein fact,
#New 3d printed materials lighter than water and as strong as steel A Nanoscribe 3d printer can print models of the Empire state building in a space the width of a human hair using precision lasers.
The printer s mirror-focused laser shines on and hardens a droplet of liquid plastic on a slide.
A computer moves the plate under the laser, selectively hardening it, layer by layer, to match a digital 3d model.
In order to the lamp beginning to radiate light, it is necessary in motion this is specially equipped with a mechanism like a pendulum.
showing it was able to adapt to changing patterns of light in its surroundings within 1 to 2 seconds,
Postdoctoral fellow Javier Fernandez and Wyss Institute director Donald Ingber created an artificial version of chitin that is light clear strong as aluminum
and graduate student Ganghun Kim, the microscope technique works when an LED light is illuminated and guided through a fiberoptic needle or cannula.
#Panorama Synergy demonstrates viability of Lumimems Reader Panorama Synergy announces that through extensive laboratory testing it has demonstrated the viability of its unique laser-based Optical Readout System, the Lumimems Reader.
and therefore more accurate, is an optical system using a laser directed at a MEMS sensor.
and the need to precisely align the laser with the tip of the tiny MEMS sensor.
#Navy's futuristic laser weapon ready for action The laser has a variety of attack modes,
The U s. Navy announced that its high-tech laser weapon is ready to disable and destroy enemy drones
The 30-kilowatt laser weapon system (Laws) is housed aboard the USS Ponce, a naval vessel stationed in the Arabian Gulfa body of water located south of Iraq that separates the Saudi arabian peninsula from Iran.
While sailors have not yet used the new laser to destroy any real enemy targets, the Navy is prepared to do just that,
and the laser weapon is not in a box waiting for a special occasion, "Klunder told reporters at a news briefing Wednesday, Dec 10, in Washington, D c. Under the Geneva convention,
militaries are allowed not to use laser weapons directly against people a condition that Klunder said the U s. Navy with abide by, according to Optics. org.
Sailors operate the laser using a video game-type controller according to Navy officials. With this controller, they can perform a variety of operations.
the laser can deter the threat with an effect known as optical"dazzling.""This nonlethal option which amounts to a very bright glare is meant to serve as a warning,
sailors aboard the Ponce can increase the strength of the laser's highly concentrated beam,
The laser weapon also shot a small drone out of the sky according to Navy officials.""We ran this particular weapon, a prototype, through some extremely tough paces,
heat and humidity conditions that aren't ideal for the operation of a laser. The data collected from these trial runs will be used to develop new laser weapons for the Navy under the Office of Naval Research's Solid-state laser-Technology Maturation program.
These future lasers could one day be deployed on both large destroyer ships (used to launch missiles) and smaller combat ships
Navy officials said. Laser weapons systems like the one aboard the USS Ponce could be used in ground-based defense systems,
as well as in the air, according to Navy researchers. These weapons are sought after because they don require highly explosive gunpowder
laser weapons may also be more reliable than conventional weapons. Of course, the U s. military is also pursuing this new breed of weapons for economic reasons.
Laser weapons cost less to build install and fire, compared with multimillion-dollar missiles, Navy officials said."
In a 2011 test, a laser weapon disabled multiple small boats launched from a U s. warship. And in 2012, Laws downed several drones during a naval test of the system t
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.
For instance, amber hallway lights are bright enough for occupants to navigate the corridor, but not disruptive of the human eye production of rhodopsin (which helps us see in darkness,
Blue light during the day helps maintain alertness. The home also features a passive design that maximizes heating
and cooling (the south-facing windows) and natural light and ventilation (the north-facing windows). The property is also five times more water-efficient than the normal house, with low-flow fixtures and short-run hot-water pipes.
#Quantum'entangled'light sharpens microscopes'images The first microscope that uses the eerie trick of quantum entanglement to increase its sensitivity has been developed by Japanese researchers.
or particles of light, the microscope reveals things that are completely transparent, visualizing them in a much better quality than could be done with ordinary light.
Physics guru Albert Einstein once famously called it"spooky action at a distance.""This unique property is already being looked at as a potential mechanism for quantum information technologies, such as quantum cryptography and quantum computation.
what is known as the Rayleigh diffraction limit hich states that it is impossible to image objects that are smaller
or closer together than the wavelength of light used in the microscope to illuminate them.
they first generated entangled photons by converting a laser beam into pairs of photons that were in opposite polarization states
This pattern is only 17 nanometers higher than the rest of the plate something that is very difficult to see with a standard optical microscope.
"An image of A q shape carved in relief on the glass surface is obtained with better visibility than with a classical light source,
and measuring the difference in the phase of the light between the two photon states
Importance for biology One classical way to image smaller objects without using entangled photons is to use shorter and shorter wavelengths of light.
This way, one could improve resolution by switching from visible light to X-rays. But X-ray microscopesare difficult to use and coherent X-ray sources like X-ray lasers, in
which the light waves have matching phases, are very difficult and expensive to build, said Dowling,
"The quantum entanglement idea gives a road to get X-ray resolution using only visible light. In the future, this could lead to inexpensive microscopes that use ordinary lasers to get this resolution,
"Dowling said. Physicist Jonathan Matthews of the University of Bristol in the U k.,who also was involved not in the research,
but the wavelengths in this experiment are infrared in the and so would not harm the organism.""There are challenges, however.
The biggest one is entangled that the photon light sources currently available are said very faint Dowling, and while they give the improved resolution, the rate at
and biofluorescence in the mesopelagic zone found at 656 to 3281 feet (200 to 1000 m) below the ocean's surface where light is dim
Bioluminescence is created the light by living organisms through a chemical reaction in the creatures'bodies. Biofluorescence on the other hand occurs
when organisms absorb high-energy short wavelength light (such as ultraviolet light) then re-emit that light at a longer wavelength.
This process makes the organisms appear to glow with an eerie colored light (often green or red.
To create the effect researchers used lasers to etch nanoscale structures into the metal surface that repel the water.
#Rice-sized laser could be a breakthrough in quantum computing A microwave laser also called a"maser"has been built by Princeton researchers
The photons can then be channeled into a coherent beam of light using mirrors. Aside from its importance in the development of quantum computers, the maser could also lead to advancements in a variety of fields such as communications, sensing and medicine,
which relies on coherent light sources.""In this paper the researchers dig down deep into the fundamental interaction between light
and the moving electron,"said Claire Gmachl, professor of electrical engineering at Princeton.""The double quantum dot allows them full control over the motion of even a single electron,
Learning to control these fundamental light-matter interaction processes will help in the future development of light sources
But now, researchers at Stanford university in Palo alto, California, have used another feature of the electron its tendency to bounce probabilistically between different quantum states to create holograms that pack information into subatomic spaces.
But Moon and his colleagues saw a way to go smaller by using a quantum analogy to the conventional hologram.
these electrons interfere with the carbon monoxide molecules to create a quantum hologram. The researchers read the hologram using the microscope to measure the energy state of a single electron wave function.
They showed they could read out an'S'for Stanford with features as small as 0. 3 nanometres.
the researchers demonstrated one of the essential features of holography. They stacked two layers, or pages, of information in this case, an'S'and a'U'within the same hologram.
They teased out the individual pages by scanning the hologram for electrons at different energy levels.
This led the Stanford team to think about the creation of quantum circuits. In encoding the'S',the researchers were concentrating the electron density at certain points and energy levels.
That led study co-author Hari Manoharan to think about using the holograms as stackable quantum circuits
Conventional optical holography which has its own community of researchers who are trying to store information densely can take advantage of charge-coupled device (CCD) cameras that read out the information in parallel.
The quantum electron holography, for now, requires the tunnelling microscope, which traverses the hologram more slowly."
"To make it practical, one needs to think about the future development of read-out systems, "Sergienko says."
"You can't persuade shareholders that they should invest money indefinitely in the absence of any light at the end of the tunnel,
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,
Any federal reliance on cloud computing, for example, will have to be evaluated in the light of security requirements.
They work by detecting how molecules collectively resonate#like guitar strings that vibrate together#with electromagnetic waves of specific wavelengths.
In that device, light is run through a system of micromirrors before reaching the sensor2. 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. For the latest study, the researchers turned to metamaterials#artificial structures patterned to interact with light in exotic ways.
Whereas a conventional microwave radar system uses a moving dish antenna to collect microwaves reflecting off a moving object
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.
Exposed to the sun, a solar cell employing such nanowires can turn nearly 14 percent of the incoming light into electricity#a new record that opens up more possibilities for cheap and effective solar power.
and phosphorus that absorbs much of the light from the sun (a property known as its band gap).
Now we absorb 71 percent of the light above the band gap and we can certainly increase that,
such as ultra-efficient light-emitting diodes (LEDS) and solar cells, but the technology has found mainly niche applications.
in which a mix of quantum dots tuned to absorb different wavelengths of light could capture more of the energy in the solar spectrum.
Near the backlight of a liquid-crystal display (LCD), for example, temperatures can be around 100#C. At this temperature,
The contrast with today s flat screens begins with the light source. Conventional LCDS use a high-intensity blue LED backlight
whose glow is converted by a phosphor coating to create a broadband, white light used to make the moving TV images.
The new Triluminos tele#visions instead pair an uncoated blue LED with a thin glass tube filled with quantum dots.
Two kinds of quantum dots in the tube absorb some of the blue light from the backlight
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,
and similarly converts raw blue light into white light made up of pure colours. Nanosys and 3m announced their partnership in June 2012
#Nevertheless, using a combination of atom interferometry and ultra-precision laser techniques, M#ller and his team have,
or tiny laser-photon impacts, which slow the Compton cycles by a precisely known amount.
could serve as the foundation for a new definition of the kilogram tied to a precise laser frequency.
But the light#emitted after a beam of electrons kicks a material s own electrons into a higher energy state#is faint and diffuse,
giving materials scientists a new tool for investigating the behaviour of light in the interiors of the complex nanostructures used in lasers, light-based circuits and solar cells."
compared with hundreds of nanometres for a beam of light. But maps made by scattered or reflected electrons are not typically sensitive to the way light behaves in the sample.
and energy of the light (see Metamaterial TV). The device is sensitive enough to pick up a signal even from materials that are barely luminescent, such as metals.
they show that the phase velocity of visible light#the speed at which the peaks and troughs of the wave travel through the material#is so fast that it is travelling effectively in a vacuum, the explanation for the material s overall refractive index of zero (E.#J.#R.#Vesseur et al.
The team has mapped also the distribution of light in the silicon nanodiscs that are used as a coating on solar cells to improve efficiency,
and in the ultra-small cavities of photonic crystals#components of chip-based lasers and light-emitting diodes."
Lukas Novotny, an optical physicist at The swiss Federal Institute of technology in Zurich, says that cathodoluminescence could be a useful tool for improving the performance of light-emitting devices and solar cells,
later it may target the laser, semiconductor and solar-cell industries. He realizes that, by selling the system,
Using lasers and magnetic fields they kept the individual atoms in a lattice arrangement. At positive temperatures, the atoms repel,
But the team also adjusted the trapping laser field to make it more energetically favourable for the atoms to stick in their positions.
as indicated by a light. An implant recorded neural activity in the rat's motor cortex (the area that controls its movements), compared it to earlier recordings,
then monitored their brain activity using a noninvasive optical imaging technique called functional near-infrared spectroscopy.
(or fluorophore) that showed up under fluorescence spectroscopy. The beads were injected into mice along with the same amount of other beads tagged with a different colour fluorophore but not the peptide.
The Food and Drug Administration (FDA) Thursday approved the first retinal implant for use in the United states. The FDA s green light for Second sight s Argus II Retinal Prosthesis System gives hope to those blinded
the rod and cone cells that convert light into electrical signals transmitted via the optic nerve to the brain s visual cortex for processing.
The company s technology is a three-by three-millimeter microelectronic chip (0. 1-millimeter thick) containing about 1, 500 light-sensitive photodiodes,
Stanford university researchers are in the early stages of developing self-powered retinal implants where each pixel in the device is fitted with silicon photodiodes.
Patients would wear goggles that emit near-infrared pulses that transmit both power and data directly to the photodiodes.
The researchers reported on the plausibility of their design in the May 2012 issue of Nature Photonics,
describing in vitro electrical stimulation of healthy and degenerate rat retina by photodiodes powered by near-infrared light.
or after being sintered by a laser#into a particular structure. So-called"bioprinters naturally use cells rather than plastics to create organic structures.
scientists say that the images shed fresh light on the first instants of the Universe s birth and peg the age of the Universe at 13.82 billion years#slightly older than previously estimated."
#'Hologram-lite'idea for 3d phone displays Now physicist David Fattal and his colleagues at Hewlett-packard Laboratories in Palo alto have developed a sort of'hologram-lite'approach.
It uses simple diffraction#not interference#to create 3d images that can be altered at video speeds,
It's almost like breaking down a hologram into several finite pieces, Fattal says. It involves etching linear grooves#diffraction gratings#onto a thin glass slab (see image below.
Light from light-emitting diodes is sent then sideways through the slab, and some of it is scattered out of the slab in a direction determined by the spacing and orientation of the grooves.
The grooves are grouped into circular patterns, each of which sends a light ray out of the slab in a particular direction.
Albert Jeansthe array of gratings and the directions of the corresponding light beams are fixed. So to create an image,
a patterned mask is placed over the fixed array of gratings, so that some escaping light rays are blocked
Figuring out how to modulate the LCD screen to produce the views is orders of magnitude easier than working out the complicated interference patterns needed to make a moving hologram visible from any direction,
And because each circular diffraction grating is just 12 micrometres across, the system is suited ideally to mobile technologies,
For example, many commercial 3d televisions use lenses to send underlying light sources in different directions. But the pixels in that case tend to be larger
But he points out that light designed to bleed between each of the 64 different views#to prevent jarring jumps#is 10 times as bright as typically used.
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