Sentences with phrase «on nanowires»

The work was done using tools developed in Zhu's group that enabled the team to conduct experiments on nanowires while they were in a scanning electron microscope.

They first identified how different nanostructure patterns grow on nanowires by conducting energy calculations in a theoretical analysis before analyzing these patterns by performing numerical simulations.

That latter characterization is certainly true of racetrack memory, a proposed scheme in which data bits, encoded as magnetized regions on nanowires, move back and forth along the nanowire «racetrack» and past read / write heads.

In their approach, they discovered that germanium nanowires are grown by the reduction of germanium oxide particles and subsequent self - catalytic growth during the thermal decomposition of natural gas, and simultaneously, carbon sheath layers are uniformly coated on the nanowire surface.

In the 3D simulations, the nanorings divided into quantum dots that materialized into columns on the nanowire facets and migrated towards the ridges upon further growth (see image).

The array, printed on the nanowire substrate with a 400 micron pitch, consists of siRNAs targeted against the intermediate filament vimentin (Pink) and a nuclear histone H1 protein (Green).

He described the piezotronic transistor - first introduced by Zhong Lin Wang at Georgia Institute of Technology in 2007 - and some of the research on nanowire arrays and 2D materials currently underway at his lab in Purdue University.

Not exact matches

Their paper published on March 22 by the Proceedings of the National Academy of Sciences highlights research that offers a new understanding of how these bacteria may use «nanowires» to accomplish the electronic feat.

The nanowires collect sunlight, much like the light - absorbing layer on a solar panel, and the bacteria use the energy from that sunlight to carry out chemical reactions that turn carbon dioxide into a liquid fuel such as isopropanol.

Nanowires for LEDs are made up of an inner core of gallium nitride (GaN) and a layer of indium - gallium - nitride (InGaN) on the outside, both of which are semiconducting materials.

Researchers at North Carolina State University have developed a new technique that allows them to print circuits on flexible, stretchable substrates using silver nanowires.

The image, captured by a scanning electron microscope, was taken as the nanowires grew on silicon at room temperature.

The nanowires are grown from a specially etched substrate such that they form exactly the desired network which they then expose to a stream of aluminium particles, creating layers of aluminium, a superconductor, on specific spots on the wires — the contacts where the Majorana particles emerge.

The next step, says Lin, is to find a way to get the wires or tubes to anchor at the other end, which would provide a complete nanowire or nanotube right on the chip.

Each individual nanowire is a semiconductor, which means that electric current moving through the wire can be switched on and off, Kim said.

In essence, it proves that electrons on a one - dimensional semiconducting nanowire will have a quantum spin opposite to its momentum in a finite magnetic field.

In an attempt to break that barrier, researchers have taken a small step toward producing nanowires and nanotubes directly on silicon chips.

Stacked on top of one another, the stars form nanowires that might power advanced electronics.

Much of Reguera's research with these bacteria focuses on engineering their conductive pili or nanowires.

In a study, reported in the January 21, 2016 issue of Nano Letters, the team demonstrated a new redox - responsive assembly method to synthesize hierarchically structured carbon - sheathed germanium nanowires (c - GeNWs) on a large scale by the use of self - catalytic growth process assisted by thermally decomposed natural gas.

Levy wondered if an Etch A Sketch approach could build on the German researchers» findings to draw and erase nanowires?

Researchers have come up with a crossbar design for computer chips, essentially building a layer of nanowires on top of another layer of nanowires at a perpendicular angle.

Viewed under an electron microscope, the gold nanoparticles and nanowires appear fused together like berry clusters on a branch.

The other side had copper film that had an array of polymer nanowires on its surface.

First, titanium dioxide nanowires are grown on fluorine doped tin oxide coated glass.

The nanowires were grown on an indium tin oxide substrate.

Atomistic simulations indicate that the presence of stacking faults results in an inhomogeneous stress distribution within the nanowires due to the change in the sign of stress fields on the two sides of stacking faults (i.e. compressive stress on one side and tensile stress on the other side).

The incoming energy powers circuits in the device that control sensors based on silicon nanowires.

ZIF - 8 film is easily coated on Pd nanowires by simple dipping (for 2 - 6 hours) in a methanol solution including Zn (NO3) 2 · 6H2O and 2 - methylimidazole.

To overcome the limitations of Pd - based hydrogen sensors, the research team introduced a MOF layer on top of a Pd nanowire array.

To fill this gap, Bharathi Srinivasan and co-workers from the A * STAR Institute of High Performance Computing have developed a computational approach that sheds light on the self - assembly of these nanostructures on multi-sided, or polygonal, nanowires.

Thus, the ZIF - 8 filter on the Pd nanowires allows the predominant penetration of hydrogen molecules, leading to the acceleration of Pd - based H2 sensors with a 20-fold faster recovery and response speed compared to pristine Pd nanowires at room temperature.

Generating videos of the nanowires stretching out required new methods to simultaneously label multiple features, keep a camera focused on the wriggling bacteria, and combine the optical techniques with atomic force microscopy to gain higher resolution.

By depriving the bacteria of oxygen, the researchers were able to force the bacteria to stretch out their nanowires on command, allowing the process to be observed in real time.

Scientists had long suspected that bacterial nanowires were pili — Latin for «hair» — which are hair - like features common on other bacteria, allowing them to adhere to surfaces and even connect to one another.

And by staining the bacterial membrane, periplasm, cytoplasm, and specific proteins, researchers were able to take video of the nanowires reaching out — confirming that they were based on membrane, and not pili at all.

It is covered with bendy nanowires tipped with lectin — a protein that binds to carbohydrates such as the sugars bacteria have on their surface.

The researchers also showed that depending on the growth direction chosen, different optical properties were observed thanks to the crystal surfaces exposed at the surface of the nanowire.

To achieve their control, the team focused on the catalysis which guide the nanowire growth.

Aloni says the team will next focus more on the chemistry of the different nanowire surfaces to further tailor the nanowire's optical properties.

It would be relatively simple to combine silver nanowires and graphene in this way on a large scale using spraying machines and patterned rollers.

We float the graphene particles on the surface of water, then pick them up with a rubber stamp, a bit like a potato stamp, and lay it on top of the silver nanowire film in whatever pattern we like.

Javey's group built a relatively large pad, seven centimeters on a side, comprising 342 individual sensor pixels with nanowire - based transistors.

In the study, the researchers found that the gallium - nitride nanowire growth orientation strongly depended on the relative concentration of nickel and gold within the catalyst.

By altering the concentrations in the alloy, the researchers could precisely manipulate, even on the same substrate in the same batch, the orientation of the nanowires.

By creating a stamp — a bit like a potato stamp a child might make — the scientists can pick up the layer of atoms and lay it on top of the silver nanowire film in a pattern.

Moreover, there is no simple way to grow different types of nanowires in the same environment and on the same substrate.

For instance, certain substrates on which the nanowires grow create conditions so that the nanowire growth orientation is dictated by the substrate's underlying crystal structure.

The calculations performed by Tomoya and Kinkuji were based on previous experiments and observations of helical gold nanowires.

«We are working on improving the coupling between the semiconductor nanowires and the metal coating.»