light

Light

Artificial light (6)
Backlight (1)
Beam of light (9)
Blue light (3)
Efficient light (1)
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Infrared light (7)
Light (139)
Light detector (1)
Light pulse (3)
Light source (11)
Monochromatic light (1)
Natural light (2)
Red light (2)
Shining light (1)
Ultraviolet light (53)
Visible light (9)
White light (2)

The basic concept is to equip drug molecules with chemical components that change shape in response to heat or light.

Organic chemist Ben Feringa at Groningen and his co-workers used an existing light-switchable unit called azobenzene,

and then turned on with light once they reach the part of the body (the throat or lungs, say) where the harmful bacteria are lurking.

A light on the instrument panel indicates when CNG is being used and there is no interruption in the vehicle performance.

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

and pressure increase in the gas. f the incident light intensity is modulated, then the temperature and pressure will be as well,

using concentrated light as a high-temperature energy source. The project is still at the experimental stage,

The process In a first step concentrated light-simulating sunlight-was used to convert carbon dioxide and water to synthesis gas (syngas) in a high-temperature solar reactor containing metal-oxide based materials developed at ETH Zürich.

The standard mechanism for improving efficiency with a third polymer is by increasing the absorption of light in the device.

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

and pressure increase in the gas. f the incident light intensity is modulated, then the temperature and pressure will be as well,

#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.

and environmental controls that regulate temperature, humidity and light to produce vegetables, fruits and other crops year-round.

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.

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

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.

then collects and analyzes the light reflected back. The Kickstarter launched Tuesday morning with several funding levels:

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,

because light and oxygen damage the photosynthetic proteins. Usually plants can completely repair this kind of damage,

and other highly reactive molecules produced by light and oxygen, protecting the chloroplasts from damage.

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

and light emitting devices to be manufactured. Until recently fabrication of TMDCS such as Mos2 has been difficult as most techniques produce only flakes typically just a few hundred square microns in area.

#A nanosized hydrogen generator (Phys. org) esearchers at the US Department of energy's (DOE) Argonne National Laboratory have created a small scale"hydrogen generator"that uses light

"For Rozhkova, this particular building block is inspired by the function of an ancient protein known to turn light into energy.

Graphene is a super strong, super light, near totally transparent sheet of carbon atoms and one of the best conductors of electricity ever discovered.

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

The light in these terahertz wavelengths can pass through materials that we normally think of as opaque such as skin plastics clothing and cardboard.

because when light is absorbed by the electrons suspended in the honeycomb lattice of the graphene they do not lose their heat to the lattice

New'T-ray'tech converts light to sound for weapons detection medical imaging More information: Sensitive Room-temperature Terahertz Detection via Photothermoelectric Effect in Graphene Xinghan Cai et al.

"The researchers have demonstrated already that the junction interacts with light much more strongly than the rest of the monolayer,

first light needs a good conductor in order to get converted into usable energy; secondly the cell also has to be transparent for light to get through.

Most solar cells on the market use indium tin oxide with a nonconductive glass protective layer to meet their needs.

that could harvest energy from light much more efficiently than traditional thin-film solar cells s

They designed a pixel that can not only measure incident light but also convert the incident light into electric power.

The same photodiode is used also in solar panels to convert incident light to electric power. The photodiode in a camera pixel is used in the photoconductive mode

#Engineers Develop Optical devices That Shape Light in Exotic Ways Engineers from the Jet propulsion laboratory and the California Institute of technology have developed innovative flat,

optical lenses that are capable of manipulating light in ways that are difficult or impossible to achieve with conventional optical devices.

Manipulating the polarization of light is essential for the operation of advanced microscopes, cameras and displays;

flexible tube with a light and camera attached to its end passes through a person digestive system.

when someone swipes the Apple ipad to drag the light across the floor, the robots follow.

"In a demonstration of the system, each robot is constantly measuring how much light is in its local eighborhood. hen there too much light in a robot area,

so that another robot can steal some of its light. he robots are working together to make sure that each one has the same amount of light in its own area,

which individual particles of light are said to have been squeezed'--an achievement which at least one textbook had written off as hopeless September 1st, 201 0

and convert the light into electric current using excited states in the material called"excitons.""Roughly speaking, an exciton is displaced a electron bound together with the hole it left behind.

The instrument combines a specialized form of linearly polarized light and photoluminescence to optically probe the molecular structure of the phthalocyanine crystals."

2015first superconducting graphene created by UBC researchers September 9th, 2015hybrid solar cell converts both light and heat from sun's rays into electricity (video) September 9th,

Understanding motions of thin layers may help design solar cells, electronics and catalysts of the future September 10th, 2015hybrid solar cell converts both light and heat from sun's rays into electricity (video) September 9th,

2015nist physicists show'molecules'made of light may be possible September 10th, 2015ultrafast uncoupled magnetism in atoms:

2015nist physicists show'molecules'made of light may be possible September 10th, 2015slac's ultrafast'electron camera'visualizes ripples in 2-D material:

just as lenses focus light and resonators (like the body of a guitar) amplify sound. They reported their findings in the May 8, 2015,

Due to the light-like properties of graphene electrons, they can pass through unimpededno matter how high the barrierif they hit the barrier head on.

#Controlling swarms of robots with light and a single finger (w/video)( Nanowerk News) Using a smart tablet and a red beam of light,

When the person swipes the tablet to drag the light across the floor the robots follow.

"In the Georgia Tech demonstration, each robot is constantly measuring how much light is in its local"neighborhood."

so that another can steal some of its light.""The robots are working together to make sure that each one has the same amount of light in its own area,

"said Egerstedt. The tablet-based control system has one final benefit: it was designed with everyone in mind.

Manipulating the polarization of light is essential for the operation of advanced microscopes, cameras, and displays;

and phase of light,"says study first author Amir Arbabi, a senior researcher at Caltech."

"We can take any incoming light and shape its phase and polarization profiles arbitrarily and with very high efficiency."

a metasurface device could manipulate light in novel ways that are very hard and sometimes impossible to do using current setups.

"The two images will appear overlapped under illumination with light polarized at 45 degrees, "Faraon says.

Using light-generated radiation combined with phase-contrast X-ray tomography, the scientists visualized ultrafine details of a fly measuring just a few millimeters.

#New, Ultrathin Optical devices Shape Light in Exotic Ways Researchers have developed innovative flat, optical lenses as part of a collaboration between NASA Jet propulsion laboratory and the California Institute of technology, both in Pasadena, California.

These optical components are capable of manipulating light in ways that are difficult or impossible to achieve with conventional optical devices.

Manipulating the polarization of light is essential for the operation of advanced microscopes, cameras and displays;

The researchers fabricated the acoustic cell sorter in Penn State Nanofabrication Laboratory using standard lithography techniques. ust like using a lens to focus light,

designed to hold a camera, LED light, an integrated circuit for receiving control instructions and transmitting data, antenna, 1. 5v button battery and, at the rear, the drive unit, to

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

"If the incident light intensity is modulated, then the temperature and pressure will be said as well, "Ren.""This generates an acoustic wave with the same frequency as the light modulation,

and detecting the difference between how the molecules absorb the light. But the distinguishing effects are weak tiny fractions of a per cent so the technique struggles to approach the sensitivity of the human nose.

It s a matter of having the right temperature, right moisture levels and not too much light.

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.

and co. Exactly how light of various frequencies influences plant growth biomass and nutritional content is understood not well.

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.

or manipulate light for telecommunications applications, or design novel catalysts for speeding up a variety of chemical reactions,"Gang said.

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,

The impulses stimulate the retina remaining cells, resulting in the corresponding perception of patterns of light in the brain.

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).

or other microorganisms that respond to light, or creates molecules to do so, and put them into nerve cells to transform them

#Four Tech Breakthroughs at the Cutting edge of Light During these dark winter months, spare a thought for artificial lights.

From strings of lights adding holiday cheer to artificial sunlamps alleviating seasonal affective disorder, they brighten our days.

The United nations designated 2015 as the International Year of Light and Light-Based Technologies to raise awareness of how photonic technologies offer solutions to international challenges.

Light technology is now an active area of research in energy, health and agriculture. First lighting the way In the late 1800s

The ability to control light in new ways transformed how we experience and see the world.

The key to its success in replicating a sunny sky uses nanostructured materials to scatter light from LEDS in the same way tiny particles scatter sunlight in the atmosphere so-called Rayleigh scattering.

Light was recognized also in the Nobel prize category of Chemistry last year for light-based microscopy tools that use a few tricks to sense the presence of a single molecule.

if they are separated by more than half the wavelength of light used for imaging. But Nobel laureates Eric Betzig

By turning the light emitted from the molecules on or off, the scientists could reconstruct the location of the molecules at the nanometer scale.

Investors must see the light Light is a unifying science across fields like chemistry and physics

But learning how to manipulate light is costly and takes time. Technologies are built largely on investments in basic science research as well as, of course, serendipity and circumstantial opportunities.

The UN designation of this International Year of Light will spotlight the potentials of these kinds of innovations

From new ways to shake off those winter blues to manipulating light in small spaces, the trajectory for artificial light is bright indeed n

As a result, this human-made material manipulates electromagnetic radiation-light-in ways never observed in natural materials.

They showed how a single nanoresonator can manipulate light to cast a very large"reflection."

"Making an object look 10,000 times larger than its physical size has lots of implications in technologies related to light,

Much like sound, light can resonate, amplifying itself as the surrounding environment manipulates the physical properties of its wave energy.

which the wavelength of light is much larger than in a vacuum, which allows light waves to resonate more powerfully.

and then scatters the light over a very large area, harnessing its output for imaging applications that make microscopic particles appear huge."

"This research opens up a new way to manipulate the flow of light, and could enable new technologies in light sensing and solar energy conversion,

The movement of electrons caused by friction was able to generate enough energy to power the lights

They showed how a single nanoresonator can manipulate light to cast a very large"reflection."

"Making an object look 10,000 times larger than its physical size has lots of implications in technologies related to light,

Much like sound, light can resonate, amplifying itself as the surrounding environment manipulates the physical properties of its wave energy.

which the wavelength of light is much larger than in a vacuum, which allows light waves to resonate more powerfully.

and then scatters the light over a very large area, harnessing its output for imaging applications that make microscopic particles appear huge."

"This research opens up a new way to manipulate the flow of light, and could enable new technologies in light sensing and solar energy conversion,

Nanoparticles that lose their stability upon irradiation with light have been designed to extract endocrine disruptors, pesticides,

#Living lasers made by injecting oil droplets into human cells Light fantastic (Image: Matja Humar and Seok Hyun Yun) Individual cells have been turned into tiny lasers. t actually super-easy,

Shining a light pulse on to the cavity excited the dye atoms into emitting light in a tightly focused beam.

Data transmission via light could be the answer to the call for a faster and more energy efficient data flow on computer chips as well as between different board components.

In contrast to direct semiconductors they emit mostly heat and only a little light when excited.

and manufactured a module enabling irradiation with UV-B light of a specific wavelength. In this particular case, LEDS emitting at a wavelength around 310 nm are used to stimulate health-promoting secondary metabolites in plants.

They showed how a single nanoresonator can manipulate light to cast a very large"reflection."

"Making an object look 10,000 times larger than its physical size has lots of implications in technologies related to light,

Much like sound, light can resonate, amplifying itself as the surrounding environment manipulates the physical properties of its wave energy.

which the wavelength of light is much larger than in a vacuum, which allows light waves to resonate more powerfully.

and then scatters the light over a very large area, harnessing its output for imaging applications that make microscopic particles appear huge."

"This research opens up a new way to manipulate the flow of light, and could enable new technologies in light sensing and solar energy conversion,

or light it likely will degrade. We have a ways to go to show that perovskite solar cells are stable enough to last 25 years.

The friction was strong enough for the electrodes to harvest enough energy to power the lights,