Essentially, the researchers use light at low temperatures to produce mixed metal -
oxide films for the electrodes that are used in the electrolysis process.
This system will enable the growth of
oxide films of increasing complexity.
Stable solar - driven oxidation of water by semiconducting photoanodes protected by transparent catalytic nickel
oxide films.
Chambers was selected for his scientific and technological leadership in growing well - defined
oxide films and surfaces.
The system will enable growing
oxide films of increasing complexity.
His current interests focus on the deposition and properties of complex metal
oxide films and heterostructures.
Dr. Kaspar's research interests include the epitaxial growth (via oxygen - plasma - assisted molecular beam epitaxy or pulsed laser deposition) and structural characterization of metallic and metal
oxide films.
Specifically, for a magnetic thin film deposited onto a transition metal
oxide film, the magnetic properties change dramatically as the oxide undergoes a structural phase transition.
When applied to photoanodes, the nickel
oxide film far exceeded the performance of other similar films — including one that Lewis's group created just last year.
The team has shown that its nickel
oxide film is compatible with many different kinds of semiconductor materials, including silicon, indium phosphide, and cadmium telluride.
When applied to semiconducting materials such as silicon, the nickel
oxide film prevents rust buildup and facilitates an important chemical process in the solar - driven production of fuels such as methane or hydrogen.
As certain alloys are exposed to extreme stress and temperatures,
an oxide film begins to form, causing the alloys to break down even more quickly.
At EMSL, a DOE scientific user facility at PNNL, Chambers and his colleagues are actively growing a variety of
oxide film materials.
The coating is a nickel
oxide film that prevents rusts building - up on the semiconductor electrodes (silicon or gallium arsenide), while also acting as a highly reactive catalysis.
Ke Sun's reflection onto a sample coating with the nickel
oxide film his team developed.
The other method uses nanosize crystals, «quantum dots», to increase solar energy conversion by injecting electrons into the metal
oxide film.
Not exact matches
Days after Raheem Sterling was pictured smoking a shisha pipe (via the Mirror), the 20 - year - old has been caught up in another viral storm — having been
filmed allegedly inhaling nitrous
oxide from a balloon.
The focus of this investigation is a hybrid material consisting of a thin nickel
film on a vanadium
oxide substrate; this hybrid material exhibits magnetic properties unlike any other magnetic material.
However, repeated cycling caused «over-hydration'that trapped water molecules inside the thin
film structure — a development that degrades electrochromic activity by generating irreversibly colored nickel
oxide hydroxide grains.
This new transparent
film has «hole - conductivity» that is competitive with the best known hole - conducting transparent
oxides.
A composite thin
film made of two different inorganic
oxide materials significantly improves the performance of solar cells, as recently demonstrated by a joint team of researchers led by Professor Federico Rosei at the Institut national de la recherche scientifique (INRS), and Dr. Riad Nechache from École de technologie supérieure (ÉTS), both in the Montreal Area (Canada).
We used a new type of MBE system to observe what happens during the growth of
oxide thin
films.
With this understanding, scientists can control — on an atomic level — the growth of
oxide thin -
films.
The labs he offered to help establish, meanwhile, would have focused on an entirely different line of research —
oxide thin
films — and thus would not have involved research with the pocket heater or another magnesium diboride heater.
So Steve Dunn at Queen Mary University in London and James Durrant at Imperial College London have been experimenting with zinc
oxide, which is much cheaper and can be made into thin, flexible
films.
Here we report an iridium
oxide / strontium iridium
oxide (IrOx / SrIrO3) catalyst formed during electrochemical testing by strontium leaching from surface layers of thin
films of SrIrO3.
Materials science and engineering postdoctoral researcher Hyungwoo Lee looks inside a thin
film deposition system during
oxide thin
film structure growth.
Jonathan Petrie led the epitaxial synthesis of strained
oxide materials and catalytic testing, and Tricia Meyer assisted thin
film deposition using a technique that employs a high - power excimer laser to vaporize material and deposit it as high - quality thin
films under precisely controlled conditions.
Many touch screens are made of layered thin (billionths of a meter thick)
films of indium - tin
oxide, an inorganic material that is electrically conductive, which allows electrical signals to travel from the «touch» to the edges of the display, where they are sensed by the device — as well as optically transparent.
A process known as the sol - gel fabrication technique can create hybrid
films — but it, too, is less than ideal, because it requires the use of acids that corrode the metals and metal
oxides in the devices» electronic components.
The artificial synaptic TFT consisted of indium zinc
oxide (IZO), as both a channel and a gate electrode, separated by a 550 - nanometre - thick
film of nanogranular silicon dioxide electrolyte, which was fabricated using a process known as chemical vapour deposition.
The cluster we report in this paper serves as an excellent solution precursor to make very smooth thin
films of amorphous aluminum indium
oxide, a semiconductor material that can be used in transparent thin -
film transistors.»
The researchers created a
film by mixing low - toxicity tungsten
oxide with polyvinyl pyrrolidone.
Their experiments used a multilayer thin
film comprising palladium, nickel - iron Permalloy, manganese
oxide and n - silicon.
DVCR tapes will be 6.35 millimetres wide, half the width of VHS tape, and coated with an evaporated
film of pure metal, rather than the magnetic
oxide powder used for VHS.
Scientists from MIPT have succeeded in growing ultra-thin (2.5 - nanometre) ferroelectric
films based on hafnium
oxide that could potentially be used to develop non-volatile memory elements called ferroelectric tunnel junctions.
The team of researchers from MIPT's Laboratory of Functional Materials and Devices for Nanoelectronics, with the participation of their colleagues from the University of Nebraska (USA) and the University of Lausanne (Switzerland), have for the first time experimentally demonstrated that polycrystalline alloyed
films of hafnium and zirconium
oxides with a thickness of just 2.5 nm (see image below) retain their ferroelectric properties.
Rather than relying on a strain or an electrical field, the researchers incorporated zinc
oxide nanoparticles into a PVDF thin
film to trigger formation of the piezoelectric phase that enables it to harvest vibration energy.
That proves that all of the «high - temperature» superconductivity traffic in the
film takes place in a single copper
oxide layer, says Bozovic.
Common inexpensive steel, in contrast, reacts with oxygen from water to form a relatively unstable iron
oxide / hydroxide
film that continues to grow with time and exposure to water and air.
Researchers measure the spray cone right down to single droplets using laser measuring devices, study the formation and evaporation of liquid AdBlue
films on the walls of the exhaust pipe, and gauge the AdBlue breakdown all the way until the formation of the reduction agent for the nitric
oxides in the adjacent catalytic converter.
But now researchers have developed a
film made of aluminum
oxide that has a refractive index as low as 1.025 but that is mechanically stiff.
They showed that the lithium ions form a thin
film on the surface of the graphene
oxide and then diffuse through defect sites — essentially gaps in the layers of the material — before settling below the bottom layer of the graphene
oxide.
The catalyst in this case was a thin
film crystal, grown to be as flat as possible, with one layer made from iridium
oxide and another layer made from strontium iridium
oxide.
By learning how to manipulate the transparency, scientists may be able to start incorporating nanotube
films into products that now rely on slower or heavier components, such as metal
oxide.
Now, researchers at Tokyo Tech have reported superconductivity in two kinds of higher titanium
oxides prepared in the form of ultrathin
films.
Other recent research areas have included the structural characterization of lattice - mismatched epitaxial metal
films on
oxide substrates for radiation damage studies, and the development of new complex
oxides as high temperature, radiation - resistant piezoelectrics for use in advanced in situ sensors.
In this study, PNNL researchers examined thin
film lanthanum iron
oxide and strontium titanium
oxide, LaFeO3 (LFO) and SrTiO3 (STO), respectively, layered together to produce a photocatalyst for solar water splitting.
This work was a part of a larger project that took 12 years and encompassed the synthesis and study of more than 2,000
films of lanthanum - strontium - copper -
oxide superconductors.
Quanxi Jia, working in the areas of superconductivity, magnetic materials and thin -
films, has conducted pioneering research in complex
oxide thin
film growth and is a recognized leader in the field of electronic device fabrication.