Sentences with phrase «oxide layer»

The acid strips away the thin silicon oxide layer that forms in air, and completely covers the bare silicon surface with hydrogen.

Bozovic's team found that when they tainted the second lanthanum copper oxide layer in the stack, the critical temperature at which superconductivity could occur dropped from 32 kelvin to 18 kelvin — no such temperature drop was seen if any other layer was doped with zinc.

For that, they decided to disturb the copper oxide layers in a high Tc superconductor called BSCCO, which also contains layers of bismuth oxide, strontium oxide and calcium.

Surprisingly, they found veins of localized oxidation wormed their way into the alloy 690 instead of forming the expected, chromium - rich protective oxide layer on the surface.

In the study, the researchers show that an electrochromic tungsten oxide layer which has been charged and discharged many times and has started to lose its capacity can be restored to its former high capacity.

This serves as the perfect glue for attaching the oil - loving molecules, which are deposited in a second step; they hold onto the metal oxide layer with one end and reach out to grab oil molecules with the other.

The fact that the protective aluminum oxide layer is not incorporated on the outside, as often attempted by other researchers, also makes it possible to apply a broad range of materials on both sides of the solar cell and allows the maximum penetration of light in the perovskite layer and thereby the optimum utilization of electrical current.

Why It Matters: Researchers have long thought that a continuous and tenacious surface oxide layer protects metallic alloys from degradation in corrosive environments.

Further study led to an understanding of the interfacial properties between the hematite and chromium oxide layers.

Moreover, gallium oxide forms a special crystalline structure that is uniquely suitable for developing so - called heterostructures of gallium oxide and indium oxide layers that are essential in many components.

Microscopically thin, transparent metal or metallic oxide layers deposited on a glass surface suppress radiative heat flow and reflect interior infrared energy (heat) back to the inside, reducing heat loss through the glass.

Advantageously, an interfacial oxide layer (SiOx) formed between the silicon and the deposited cobalt nano - islands.

«It will also facilitate unique insights into thermo mechanical states, particularly at the thermally grown oxide layer.»

«We're interested in the radiation damage case in particular, but other applications might include studying low - temperature phase change materials, or real - time monitoring of oxide layer formation on steel alloys,» he said.

«This thin zinc oxide layer is engineered with a plate - like structure that we call micro-tectonics, these plates can slide across each other bit like geological plates that form the earth's crust allowing for high sensitivity and the ability to bend and flex the devices,» he said.

This can be used to replace the brittle indium tin oxide layers.

In the vacuum of space, no protective oxide layer formed on the bare parts, as it would have done on Earth.

That could produce high - temperature superconductivity in a single copper - oxide layer just 0.66 nanometres thick.

Top: Schematic showing the efficient transfer of photo - excited holes from the light absorber, through the transparent p - type oxide layer, to the water oxidation catalyst; and a transmission electron microscopy image of the absorber / p - TCO.

Hell, I don't know — it might considering the raw aluminum chassis hidden beneath that thin black oxide layer.

We thus built in an additional mirror — a 200 nanometer thick silicon oxide layer that we evaporated onto the silicon,» explains Benedikt Mayer, doctoral candidate in the team led by Koblmüller and Finley.

In this way, the electric charge which has «fastened» in the material is removed and the tungsten oxide layer is like new again.

First, a substrate, typically the corroding alloy, absorbs oxygen and forms a metal oxide layer.

Engineers stalled silicene's degradation by sealing it between a silver base and an aluminum oxide layer.

How hydrogen can enter through this surface oxide layer, or how it can be discharged as a gas from that layer, has not been quantified.

The abrupt interface between each distinct layer is key to separating the electrons and holes: the electrons prefer to remain in the hematite, while the holes are driven to the chromium oxide layers.

That proves that all of the «high - temperature» superconductivity traffic in the film takes place in a single copper oxide layer, says Bozovic.

The window's opacity to visible light and solar energy varies when an electrical current flows between the oxide layers.

They then grew an oxide called SrTiO3 on the gallium arsenide and, immediately after, another oxide layer of GdTiO3.

The illustration shows the structure of the sample: n - doped silicon layer (black), a thin silicon oxide layer (gray), an intermediate layer (yellow) and finally the protective layer (brown) to which the catalysing particles are applied.

When the microscope's sharp tip applied a positive voltage to the material's surface, it drew conducting lines that exist in the space between the oxide layers.

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.

«We had to study the silicon oxide layer, which was deposited in an undefined manner, and find a method of controlling the deposition and optimizing the process.»

The hydrogen has to first dissolve in the oxide layer before penetrating into the bulk of the metal beneath.

The team found that the amount of hydrogen solubility in the oxide follows a valley - shaped curve, depending on the doping element's ability to introduce electrons into the oxide layer.

«The thinner the oxide layer, the greater the friction,» said Jacobs.

Their model draws on oxidation kinetics to explain how stress affects the oxidation species that diffuse throughout the oxide layer, and how stress modifies chemical reactions at interfaces and lead to oxidation.

While they demonstrated the process using one particular oxide compound, the researchers say the findings could apply broadly to a variety of oxide materials, and even to other kinds of ions in addition to oxygen, moving in and out of the oxide layer.

Using the Center for Nanoscale Materials, a DOE Office of Science user facility at Argonne, they built a constricted wire out of a three - layered structure in which a tiny layer of magnetic material is sandwiched between tantalum and tantalum - oxide layers.

No one understood if the oxide layer interfered with electrode performance, and if so, how the rubbery coating improved it.

In addition, one Angstrom thick metal oxide coatings are thin enough to warrant fast electron transport through the oxide layer.