Sentences with phrase «nitride as»

From our studies, we have found the best results using silicon nitride as the diaphragm material.

Led by Prof Coleman, in collaboration with the groups of Prof Georg Duesberg (AMBER) and Prof. Laurens Siebbeles (TU Delft, Netherlands), the team used standard printing techniques to combine graphene nanosheets as the electrodes with two other nanomaterials, tungsten diselenide and boron nitride as the channel and separator (two important parts of a transistor) to form an all - printed, all - nanosheet, working transistor.

Various methods of making graphene - based field effect transistors (FETs) have been exploited, including doping graphene tailoring graphene - like a nanoribbon, and using boron nitride as a support.

Illustration of the asymmetric supercapacitor, consisting of vertically aligned graphene nanosheets coated with iron nitride and titanium nitride as the anode and cathode, respectively.

So there have already been numerous attempts to employ polymeric carbon nitrides as cost - effective photocatalysts for solar - powered water splitting.

Not exact matches

Obtaining the desired MXene usually involves a roundabout process: Layered carbides and nitrides, known as MAX phases, are selectively etched with hydrofluoric acid to remove the layers of the «A» element, which is a group 13 or 14 element such as aluminum, silicon, or germanium.

It's more than twice as hard as the closest competition, silicon nitride and cubic boron nitride.

The material he chose to work with, gallium nitride, had a well - deserved reputation as one of the most difficult of semiconductor materials.

Even more inauspicious, there was no practical way to make p - type gallium nitride, which has an excess of electron deficiencies known as «holes.»

Last October, having done everything he wanted to with gallium nitride and weary of a Japanese industrial R&D system that he characterizes as «communist,» Nakamura decided to leave Nichia.

Metal nitrides such as titanium nitride, which offer both high conductivity and capacitance, are a promising alternative, but they tend to oxidize in watery environments that limits their lifetime as an electrode.

Today's best commercial atomic force microscopes have tips made of silicon or silicon nitride that run over the surface of a sample like the stylus of a record or CD player, recording all the bumps as they go along.

And these principles apply not just to graphene but also to other two - dimensional materials, such as molybdenum disulfide, boron nitride, or other single - atom or single - molecule - thick materials.

But how does it behave in contact with another material with a similar structure, such as boron nitride?

Electrical current is injected into the device, tunnelling from single - layer graphene, through few - layer boron nitride acting as a tunnel barrier, and into the mono - or bi-layer TMD material, such as tungsten diselenide (WSe2), where electrons recombine with holes to emit single photons.

They took a graphene monolayer (which acts as a semi-metal), and stacked onto it a hexagonal boron nitride (hBN) monolayer (an insulator), and on top of this deposited an array of metallic rods.

The as - modified graphitic nitride is a yellow solid, which changes color upon exposure to light.

«Hydrogen from sunlight — but as a dark reaction: Generation, storage, and time - delayed release of electrons in graphitic carbon nitride material for artificial photosynthesis.»

Scientists are beginning to find practical uses for materials such as hexagonal boron nitride that manipulate light in usual ways.

Using this process, the researchers grew stacks of flexible electronics up to three layers high, mixed and matched from silicon, the semiconductors gallium arsenide and gallium nitride, as well as carbon nanotubes, they reported in Science.

Charge carriers in polymeric carbon nitrides always take paths perpendicular to the sheets, as Merschjann's group has now shown.

Boron nitride is a layered compound that features a similar hexagonal lattice — in fact hexagonal boron nitride is sometimes referred to as «white graphene.»

Treated silicon nitride is hydrophilic and has readily allowed DNA translocations, as measured by many other researchers during the last decade.

The experts also found that a few layers of hexagonal boron nitride (h - BN) are as strong as diamond but are more flexible, cheaper and lighter.

Previously, the γ» phase of iron nitride has only been synthesized in either thin - film form in high - vacuum environments or as inclusions in other materials, and never integrated into an actual device.

The FAST manufacturing method enables the creation of transformer cores from raw starting materials in minutes, without decomposing the required iron nitrides, as could happen at the higher temperatures used in conventional sintering.

Gallium nitride nanowires, however, don't experience the same sort of crystal strain, so scientists hope to use them as tunable, broad - spectrum light sources.

«This is the first observation of a significant pyroelectric effect in peptide microtubes similar to what's seen with semiconductor materials such as zinc oxide or aluminum nitride,» Kholkin said.

Kim and colleagues first isolated a sample of pure graphene by protecting it between layers of hexagonal boron nitride, an insulating, transparent crystal also known as «white graphene» for its similar properties and atomic structure.

The team had experience with a promising family of electrically conducting carbides and nitrides known as the MAX phases.

Two - dimensional materials (2DMs) such as graphene, hexagonal boron nitride, silicene and others, are currently amongst the most intensively studied classes of materials that hold great promise for future applications in many technological areas.

BN (boron nitride) was chosen as the base for new hybrid nanoparticles because it is chemically inert and biocompatible and has low relative density.

He was a research scientist for 10 years at Bell Labs, working on nontrivial topics such as Molecular Beam Epitaxy, high - temperature superconductors, gallium nitride and — here's where we come in — electronic publishing.

The device is made from the same widely used materials as solar cells and other electronics, including silicon and gallium nitride (often found in LEDs).

As with its case against Apple, Boston University claims that products like Microsoft's Surface RT and the BlackBerry Z10 include a «gallium nitride thin film semiconductor» that one of its professors patented in 1997.