or UV LIGHT) and more importantly, have a high rate of false-positive readings. Professor Paula Mendes said,
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.
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
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.
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 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,
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,
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,
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.
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.
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
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.
This is particularly impressive because there not a linear correlation between faces in visible and infrared light.
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.
The emission of red, green and blue lights was confirmed also in a test involving the application of voltage rather than illumination,
Lidar (light detection and ranging) sensors operate in this wavelength range, for example. They are used, among other things,
Lidar (light detection and ranging) sensors operate in this wavelength range, for example. They are used, among other things,
or reducing the need for a backlight) and have reached efficiencies that are already comparable to organic LEDS in terms of quantum efficiency (photons emitted per electron injected).
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.
However, fabrication issues and technological limitations rapidly come into play. State of the art solutions come in the form of LIDAR (a portmanteau of ightand adar technology,
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.
thus controlling the direction of the light beam. The Caltech team describes how they form the image as follows:
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,
but for more specific battlefront demands. If so, it means that phased array optical technology has reached finally silicon-processing-level integration a significant landmark in its development e
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).
and provide an improved color gamut above that of fluorescent lights, the price is the technology greatest drawback.
then shine a light on them if theye a likely hazard (on or along the side of the roadway).
#New material combines photons for big solar energy gains An innovative new approach to solar energy from University of California Riverside could dramatically increase the amount of light available to contemporary solar panel designs.
this new study looked at taking currently inaccessible infrared light and turning it into visible light. They hope that by directing this newly fabricated light onto conventional solar panels,
the efficiency of solar power could be improved greatly, for an affordable price. Infrared light currently passes straight through most silicon solar cell technologies
representing a substantial inefficiency in generating electricity from sunlight. Much of solar research has worked to directly convert infrared light to electricity,
but such technologies change the transistor design, and thus the manufacturing process for solar panels. Their impacts tend to be limited by cost concerns, more than anything else.
and instead looked to make the light conform to the panels. They created an all-new hybrid material that takes two photons of 980-nanometer infrared light shone onto it and p convertsthem into one photon of 550-nanometer orange yellow light.
This photon has almost double the energy of the originals and more importantly, it exists in a form that existing solar panels can absorb.
an inorganic layer with semiconductor nanoparticles this absorbs the infrared light, but isn capable of directly passing it into the electricity generating process.
In general, this sort of research into the manipulation of light could allow a wider rollout of solar power around the world.
if its energy could be added to that of the cloud-filtered visible light, solar might start to make good financial sense in less sunny areas than Texas and California.
such as highly Efficient light Emitting Diode lasers and radio frequency components for cooling purposes, Liu said. raphene-based film could also pave the way for faster,
Northwestern University scientists have invented new advanced fluorescent inks revealed through a phone's ultraviolet light that serve as the product barcodes of the future.
Under natural light, this kind of ink is invisible, but is revealed when highlighted by a smartphone ultraviolet light.
To defeat counterfeiters, this ink could be applied to nearly anything, from the world most expensive handbags to rare liquor and even banknotes.
it should be possible to manufacture therapeutic drugs that could be activated with light, says co-principal investigator Michael R. Bruchas, associate professor of anesthesiology and neurobiology at Washington University in St louis. ith one of these tiny devices implanted,
and activate that drug with light as needed. This approach potentially could deliver therapies that are targeted much more
By activating brain cells with drugs and with light, the scientists are getting an unprecedented look at the inner workings of the brain.
If we want to influence an animal behavior with light or with a particular drug, we can simply point the remote at the animal
In other mice, shining a light directly onto brain cells expressing a light-sensitive protein prompted the release of dopamine,
and exposed it to ultraviolet light, which is found in the sun rays and breaks down many materials.
therefore make them very efficient at absorbing light. The combination of light-absorbing properties with making metals water repellent could lead to more efficient solar absorbersolar absorbers that don rust
and do need not much cleaning. Guo team had blasted previously materials with the lasers and turned them hydrophilic,
particularly in light of the huge disease burden of malaria,"explained senior author Manoj Duraisingh, Ph d.,professor of Immunology and Infectious diseases at the T. H. Chan School of Public health."
#PCR Makes the Jump to Light speed The amplification of minute amounts of genetic material is the cornerstone of every molecular biology laboratory
Now, bioengineers at the University of California, Berkeley have developed new technology they believe will dramatically increase heating and cooling speeds with the switch of a light."
"The findings from this study were released today in Light: Science & Application through an article entitled ltrafast photonic PCR.
When exposed to light, the free electrons get excited and begin to oscillate, generating heat.
Once the light is off, the oscillations and the heating stop. As it turns out,
since it is extremely efficient at absorbing light. In their study, the investigators used thin films of gold
Additionally, the Berkeley scientists used LED LIGHTS with a peak wavelength around 450 nm for most efficient light-to-heat conversion.
The light was able to heat electrons at the interface of the gold films and DNA solution ramping temperatures up staggeringly fast at approximately 13°C per second.
#New process prints electroluminescent layers directly onto three-dimensional objects Electroluminescent (EL) panels are found in many electronics applications, particularly as backlighting for LCD displays, keypads, watches,
Rainer Kling, associate professor at the Light Technology Institute of KIT. Electroluminescent panels are a very popular way to backlight a screen,
particularly as they provide an even glow across their entire face, use very little power,
Essentially the equivalent of a capacitor when used in an AC (Alternating current) circuit, EL panels encase their light-emitting material between two electrodes.
Passing current through the filaments caused them to heat up to over 2, 500°C (4, 500°F) and produce an exceptionally bright light."
"This new type of'broadband'light emitter can be integrated into chips and will pave the way towards the realization of atomically thin, flexible,
and an exceptionally intense light is produced. Measuring the spectrum of light emitted from the new device,
the researchers also discovered that it peaked at wavelengths not expected to be seen. This was a result of interference between the light being generated directly by the glowing filaments
and light bouncing off the silicon substrate and back through the graphene filaments themselves.""This (phenomenon) is only possible
because graphene is transparent, unlike any conventional filament, and allows us to tune the emission spectrum by changing the distance to the substrate."
"A graphene lattice is also a particularly efficient way to produce light, due to its inherent ability to maintain excitation levels that allow the freer flow of electrons.
so that less energy is needed to attain temperatures needed for visible light emission, "said Myung-Ho Bae, a senior researcher at KRISS."
the new device also opens up many possibilities of alternative light generation at the microscale,
The short video below is an animation showing how the graphene filaments generate Light source: Columbia Universit U
researchers at Missouri University of Science and Technology have developed a technique to print images that uses the manipulation of light, rather than the application of ink,
the researchers created holes with different diameters (ranging in size from 45 to 75 nanometers) corresponding to the desired absorption of light at various wavelengths.
As such, light shining onto the logo at specific frequencies allowed researchers to create different colors with reflected light instead of ink.
and also to manipulate the light to produce four new colors to make an orange ampersand,
or metal-air interface) and create an optical magnetic dipole resonance which results in near-perfect light absorption and negligible reflection in the material.
and can be activated by exposure to light, claiming it could offer safer means of repairing wounded tissue.
As the gel is exposed to light, its molecules bind together to create a mechanical stability,
Surface plasmon resonance (SPR) is a process where a stream of light is directed onto a metallic film, with most,
Some of the light is absorbed by electrons on the film's surface which causes them to jostle.
it affects how the light is absorbed and reflected, allowing scientists to deduce critical information about the composition of the sample,
namely a light detector and light source. The scientists fixed a 400 micrometer fiber optic cable curved into a U-shape across the phone's camera and LED light.
The camera was fitted with a diffraction grating to separate the light beam into an emission spectrum and a small well to store fluid samples was added.
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