Sentences with phrase «thin films»

Thin films are prepared by spin coating and exposed to solvent vapor, providing morphological reorganization.

Thin films are metastable in the as - deposited state.

SPolymer and hybrid thin films from innovative deposition techniques to functional devices (FUNCTIONAL MATERIALS)

Mesoporous inorganic thin films represent a field of research with growing importance in applications such as sensing, optics, photovoltaic cells and protective coatings.

Solid state physics, including the physics of condensed materials, nanostructures, thin films and surfaces and also topics in the field of theoretical and experimental optics, including the physics of optical crystals, nonlinear and quantum optics, and laser physics.

Yuanyuan Zhou, a graduate student in Padture's lab, wanted to see if there was a way to make perovskite crystal thin films without having to apply heat.

ESS maintains a number of facilities for R&D, including workshops in Lund, test beamlines in Germany and Norway, and a thin films coating facility in Linköping.

«We can deduce concrete clues from this study as to which point defects in which concentration to expect in the given composition of kesterite thin films», says Gurieva.

Nickel - gallium thin films of various stoichiometries were found to reduce CO2 to methane, ethane, and ethylene, at overpotentials lower than the best polycrystalline catalyst, copper.

Some of his important contributions include the development of high - performance Josephson Junctions in superconducting quantum interference devices (SQUIDS) and the invention of fabrication methods for multi-layer thin films used to develop novel microwave devices.

Shewanella cells were allowed to attach to the thin films, where the iron in the hematite serves as an electron acceptor.

Grain boundaries in p - n junction diodes fabricated in laser - recrystallized silicon thin films

Correlated electrical and microstructural studies of recrystallized silicon thin films on bulk glass substrates

«The ultimate goal is to use these atomic - layer semiconducting thin films to create devices that are extremely flexible, but to do that we need to transfer the thin films from the substrate we used to make it to a flexible substrate,» says Cao, who is senior author of a paper on the new transfer technique.

Researchers at North Carolina State University have developed a new technique for creating high - quality semiconductor thin films at the atomic scale — meaning the films are only one atom thick.

The technique is much faster than existing methods and can perfectly transfer the atomic scale thin films from one substrate to others, without causing any cracks.

Existing techniques for transferring such thin films from a substrate rely on a process called chemical etching, but the chemicals involved in that process can damage or contaminate the film.

The authors conclude that liquid on present - day Mars may be limited to traces of dissolved moisture from the atmosphere and thin films of water.

«Our studies reveal a large superconducting pairing gap on the topological surface states of thin films of the bismuth selenide topological insulator when grown on BSCCO,» Fedorov says.

They coated the first - generation motes — 3 millimeters long, 1 millimeter high and 4/5 millimeter thick — with surgical - grade epoxy, but they are currently building motes from biocompatible thin films which would potentially last in the body without degradation for a decade or more.

Organic electronic devices such as OLEDs and organic solar cells use thin films of organic molecules for the electrically active materials, making flexible and low - cost devices possible.

So, in the context of developing unconventional microfabrication techniques, most efforts have focused on the interfacial instabilities of very thin films.

Instead of printing with normal ink, electrically - functional electronic ink is printed on flexible, thin films (so - called substrates).

A family of compounds known as perovskites, which can be made into thin films with many promising electronic and optical properties, has been a hot research topic in recent years.

Aurelien Manchon, an Associate Professor of Material Science and Engineering at the University, notes that one of the main reasons for the appeal of skyrmions is their ability to avoid defects or uneven patches in thin films that would normally trap or «pin» a magnetic charge.

They created holes, or antidots, in thin films of manganite.

The researchers wrote in the latter paper that «The observed emergent antiferromagnetic behavior may lay the foundation of Si (silicon) spintronics and may change every field involving Si thin films.

These are thin films of a material that is optically transparent and electrically conductive.

The least expensive solar cells today are made using thin films of cadmium telluride.

They were able to show that thin films have an intrinsic mechanism for dissociation of the strongly bound electron - hole pairs (excitons) to long - lived free - carriers provided by lower energy states at the edges of the layered perovskites.

Research that took inspiration from the natural world may also prove useful to the electronics industry, which often requires high temperatures and harsh acids or bases to produce thin films of silicon or other semiconductors.

The 2D, near - single - crystalline «Ruddlesden - Popper» thin films have an out - of - plane orientation so that uninhibited charge transport occurs through the perovskite layers in planar devices.

Researchers from North Carolina State University have found a way to reduce the coercivity of nickel ferrite (NFO) thin films by as much as 80 percent by patterning the surface of the material, opening the door to more energy efficient high - frequency electronics, such as sensors, microwave devices and antennas.

Their printer is capable of producing features just 40 micrometres wide, and thin films just 16 micrometres thick.

We've been trying to make materials, compounds, anything that can be useful to improve the processes to make thin films that find application in a variety of electronic devices.»

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.»

By creating a corduroy pattern on the surface of NFO thin films, researchers have been able to lower the coercivity of the NFO by 30 to 80 percent, depending on the thickness of the film.

Using electron microscopes, the scientists took images of the thin films (about 100 nanometers thick) of the material they prepared, before and after they hit the films with low - energy protons.

Previously available electrocaloric materials were single crystals, bulk ceramics or ceramic thin films that could cool, but are limited because they are rigid, fragile and have poor processability.

«Chemists eye improved thin films with metal substitution.»

«To learn more about the interactions of the magnetism with light, we studied the spin dynamics of ferrimagnetic thin films containing different proportions of gadolinium.»

When the electrodes and the active layer are printed as thin films on top of each other, defects in one layer will act as points of attack for the next layer to be printed.

Joël Marthelot of ESPCI ParisTech in France and his colleagues noticed the cracks when studying thin films of silicate materials, which are used as a coating inside lasers.

That suggests thin films of water have formed at the location in the past, so studying the chemical composition can reveal much more about the martian past.

The optimal material for the photosensitive layer still needs to be identified, and the researchers have proposed a range of candidate materials — including thin films of diamond, which would be very robust and long - lasting.

The first big breakthrough came in 2003 when, in collaboration with the group of Ramamoorthy Ramesh (now at UC Berkeley), we succeeded in producing and understanding thin films of what is now the most - studied multiferroic material, bismuth ferrite.

Considering the major step for device manufacture — the wet coating process is a low - cost but stable process to fabricate large - area and uniformly thin films, the flat - plane emission device has the potential to provide a new approach to lighting in people's life style and reduce carbon dioxide emissions on the earth, Shimoi said.

The fact that thin films made of low cost metal - organic perovskites can be produced on a large scale for example by spin coating and subsequently baking (whereby the solvent evaporates and the material crystallizes), makes this technology additionally attractive.

The ability to accurately measure tiny displacements of microscopic bodies has applications in sensing trace amounts of hazardous biological or chemical agents, perfecting the movement of miniature robots, accurately deploying airbags and detecting extremely weak sound waves traveling through thin films.

And secondly, this 2D exciton is stable at room temperature and robust against defects, as it is present in any type of TiO2 — single crystals, thin films, and even nanoparticles used in devices.