Sentences with phrase «material absorbs light»

With this complex experimental setup the physicists in Zurich could now study in detail how strongly the material absorbs light under different conditions.

Not exact matches

This stuff weighs almost nothing, the new materials don't absorb body odor, and the running shoes are super light and can be squeezed down and double for use on long - haul flights.»

While most of its peers make silicon - based panels, First Solar manufactures thin - film panels made with cadmium - telluride, which absorbs more frequencies of light and uses fewer materials.

That's one potential application for a new technology that combines water - repelling yet light - sensitive and water - absorbing materials into polymeric nano - reactors for creating photo - responsive gold nanoparticles.

Testing showed their materials were biocompatible, stood up well in heat and light, and absorbed both ultraviolet A and ultraviolet B radiation with high efficiency.

Plasmonic materials absorb and scatter light in interesting ways, giving them unique sensing properties.

People have designed materials that absorb light far more efficiently.

For example, it was predicted to absorb light in the near - UV and blue region and have high photoluminescence, which is the material's ability to emit light when excited by a higher energy light source.

Rice University materials scientists have created a light foam from two - dimensional sheets of hexagonal - boron nitride (h - BN) that absorbs carbon dioxide.

The techniques he has explored include fancy ways of growing crystals of semiconductor material — oxides of manganese, cobalt, silicon, and many other elements — that can perform the first critical tasks of photosynthesis: absorbing light and displacing electrons.

Otherwise, the laser material behaves just like any other material — it absorbs part of the incident light.

«This allows our new material to absorb visible and even near infrared light, which we could never achieve with LTO alone.»

To demonstrate the material, the lab placed the precursor into its custom chemical vapor deposition (CVD) furnace and used it to coat an array of light - absorbing, semiconducting titanium dioxide nanorods.

The three - part composites of this material maximize both absorbing light and its efficiency for water splitting.

Its two faces differ strikingly in color, likely the result of thermal segregation: Over time, darker materials (like carbon) have absorbed more heat from the sun, warming up and sending lighter, more volatile materials (like ice) to the colder hemisphere.

Although n - type titanium dioxide (TiO2) is a promising substrate for photogeneration of hydrogen from water, most attempts at doping this material so that it absorbs light in the visible region of the solar spectrum have met with limited success.

In order to focus red, blue and green light — light in the visible spectrum — the team needed a material that wouldn't absorb or scatter light, said Rob Devlin, a graduate student in the Capasso lab and co-author of the paper.

A vast improvement over current nonreflective materials, the new technology could revolutionize solar cells, intensify light - emitting diodes, and possibly help solve mysteries in quantum mechanics by mimicking a «black body,» an object that absorbs all light.

This material, in which carbon substitutes for some of the lattice oxygen atoms, absorbs light at wavelengths below 535 nanometers and has a lower band - gap energy than rutile (2.32 versus 3.00 electron volts).

Furthermore, light moving through materials typically gets absorbed until, at some point, the energy of the radiation falls to zero, putting an end to its usefulness.

What's more important is we've come up with an easy way to achieve that, to make a UV absorbing material to become a visible light absorber by narrowing the bandgap.»

It's more efficient than previous devices, the researchers say, because its two cells absorb more light than single - layer solar devices, because it uses light from a wider portion of the solar spectrum, and because it incorporates a layer of novel materials between the two cells to reduce energy loss.

Pendry knew he was in uncharted territory, but at first he didn't comprehend the magnitude of his idea: By combining the electrical properties of Marconi's radar - absorbing material with the magnetism imparted by the copper wire, he had unknowingly figured out how to manipulate electromagnetic radiation, including visible light — making wild applications like Harry Potter's invisibility cloak suddenly within reach.

«Tailoring materials that will absorb a specific color of light is very difficult from the scientific point of view, but from the societal point of view we are contributing to the development of a technology that can help reduce greenhouse gases.»

For roofing applications, a layer of material placed under the panels is used to absorb light when the panels are in their clear state.

Instead, each particle of light, or photon, is briefly absorbed by an atom in the material.

«We can absorb much more solar energy from the light than the conventional material,» Yang said.

Another limitation is that materials genomics has been hitherto applied almost exclusively to what engineers call functional materials — compounds that can perform a task such as absorbing light in a solar cell or letting electrical current pass in transistor.

«The polymer matrix absorbs light in the UV domain, stabilizes the nanosheets and gives the material the properties of the polymer, while at the same time maintaining the remarkable optoelectronic properties of the nanosheets.»

Germanium has some desirable characteristics for photovoltaic materials, but unfortunately it doesn't absorb light well.»

When comets approach their host stars, their surfaces warm up, and volatile materials such as ice start to vaporize, forming long tails of gas and debris that absorb specific colors of light from their host stars.

«For a photovoltaic material, obviously absorbing light is the first part and converting that solar energy into electrical energy is the second part,» said Ames Laboratory scientist Emily Smith.

In a thermo - photovoltaic device, external heat causes the material to glow, emitting light that is converted into an electric current by an absorbing photovoltaic element.

In a thermo - photovoltaic device, heat from an external source (chemical, solar, etc.) makes a material glow, causing it to emit light that is converted into electricity by a photovoltaic absorber.

The efficiency of solar cells depends on trapping and absorbing light and can be increased by using a back reflector: a mirror behind the solar cell material that reflects light that was not absorbed and leads it back into the solar cell.

«The fact that germanium doesn't absorb light well is a simple way of saying it's an indirect bandgap material,» Smith added, «and we are trying to make a more direct bandgap material, one that absorbs light better.»

A standard lasing material, when stimulated by a pump, absorbs light for a time before it starts to lase.

The layer is so thin that 95 % of the light just passes through — but a tenth of the remaining five percent, which are absorbed by the material, are converted into electrical power.

Such materials display a strong absorption of ultraviolet or visible light, making them attractive as primary light absorbers in molecular solar cells and other devices of molecular optoelectronics.

Many new, lower cost designs are limited as their layer of light - absorbing material is too thin to extract enough energy.

Scientists have tried building the electrodes out of common semiconductors such as silicon or gallium arsenide — which absorb light and are also used in solar panels — but a major problem is that these materials develop an oxide layer (that is, rust) when exposed to water.

Another advantage is that the new material is able to store the light energy absorbed.

The results were programmed into algorithms that calculate and render in real time the frequency and temperature of light and color on reflective, absorbing and distorting materials.

Now researchers have teased out the structural secrets behind these feathers, which rival even the deep, velvety darkness of human - made materials designed to absorb light.

Perhaps, some scientists thought, this perovskite might someday be able to outperform silicon, the light - absorbing material used in more than 90 percent of solar cells around the world.

Some of the waveguides feature an optically active material, such as an indium gallium arsenide semiconductor, that can amplify or absorb signal light depending on whether or not it is optically excited.

The red, purple and orange balls are ions that can be varied so the material absorbs different wavelengths of light in its 3 - D form (left).

These results provide an important step towards possible future applications as a luminescent material, such as for lighting and displays, as well as light absorbers in solar cells and photocatalysts for producing solar fuel.

Near the interface, they found that the presence of the higher - index material effectively raised the refractive index of the low - index material, allowing it to absorb more light.

At the Massachusetts Institute of Technology, research scientist Peter Bermel is seeking a solution using materials that absorb the sun's heat and emit light.