Sentences with word «bismuth»

«Robert took a big step forward by finding the right combination of bismuth ferrite crystal shapes to boost the amount of strain produced,» Ramesh says.

This is the typical concentration of bismuth subsalicylate in both human and veterinary medicine.

In the experiment, Cui and his colleagues deposited the nanocone arrays on a thin film of bismuth vanadate.

Early experiments indicated a low value of the linear magnetoelectric effect in bismuth ferrite (almost one thousand times lower than the actual value), however later experimental studies revealed a large ME effect and it was also demonstrated that by using it in layered structures, record values of the magnetoelectric effect can be achieved.

Then, when we went back and looked at what happened to the material and tried to find out what elements were in there, we only saw bismuth selenide and palladium.»

The work shows that it is possible to use small amounts of additives, such as bismuth oxide, to change the properties of materials.

This highly concentrated formula stands apart from its competition with the exclusion of bismuth oxychloride or fillers.

The key ingredient that makes the batteries rechargeable is a molecule called bismuth oxide which, when mixed into the batteries» zinc electrodes, prolongs the life of devices and allows them to recharge.

By experimenting with bismuth ferrite films of different thicknesses grown on different types of substrates, Zeches was able to create a film that could generate more piezoelectric «strain» — measured in terms of charge generated — than previously possible.

In a study whose results were published in Nature last July, physicist Ali Yazdani used a powerful microscope to track electrons as they encountered stairlike barriers on the surface of antimony, a material that shares several characteristics with topological insulators such as bismuth telluride.

Over-the-counter kaopectate was reformulated to contain bismuth subsalicylate.

Writing in the June 17 edition of Science Advances, Cui and his colleagues presented a new approach using bismuth vanadate, an inexpensive compound that absorbs sunlight and generates modest amounts of electricity.

As for bismuth ferrite - based substances, we'll likely first see them in nanoscale data storage devices.

Liu and his team found that bismuth metal deposited on the silicon can result in a more stable large - gap topological insulator.

Following an original device concept, Mr. Joyprokash Chakrabartty, the researchers have developed this new composite thin film material which combines two different crystal phases comprising the atomic elements bismuth, manganese, and oxygen.

They added bismuth ferrite nanoparticles to a polyvinyl alcohol polymer solution and converted that into a film via a multi-step method called drop - casting.

In this research, Lawler and his colleagues focused on a member of the cuprate class of superconductors called bismuth strontium calcium copper oxide (BSCCO).

Meanwhile, Aharon Kapitulnik and colleagues at Stanford University in Palo Alto, California, used a scanning tunneling microscope to study the crystal surface of bismuth strontium calcium copper oxide.

The Berkeley research is too early in its development to determine when bismuth ferrite - based materials might be incorporated into consumer electronics or how it might affect cost.

By seeding them with substances like bismuth tri-iodide, which cause water to form into ice particles, the hope is to reduce the water vapour and allow more radiation to escape.

The scientists focused on bismuth vanadate, a thin - film semiconductor that has emerged as a leading candidate for use as a photoanode, the positively charged part of a photoelectric cell that can absorb sunlight to split water.

An international team led by researchers from the University of Houston has reported record thermoelectric performance from rarely studied bismuth - based Zintl phases, work that could lead to a new class of thermoelectric material.

The researchers used the newly calculated value for the magnetic moment of the stable bismuth isotope and made a theoretical prediction of the hyperfine structure splitting within the highly - charged ions.

Here, a researcher at the Department of Energy's Savannah River National Laboratory holds a photonic crystal made from bismuth germanate.

GE's PRISM fast reactor, General Atomic's helium - cooled fast reactor, or Hyperion Power's liquid lead - bismuth cooled reactor could all turn waste into fuel.

RIKEN researchers use a slightly different technique in which they slam zinc into bismuth, detecting one atom of element 113 in 2004 and another in 2005.

The Center for the Polyurethanes Industry (CPI) of the American Chemistry Council (ACC) today announced that the Shepherd Chemical Company's BiCATs ™ 8840 and 8842 water stable bismuth catalysts for polyurethane formulations won the 2016 Polyurethane Innovation Award.

A research team led by professor Sun Hongzhe of the Department of Chemistry, Faculty of Science and Dr. Richard Kao Yi - Tsun of the Department of Microbiology, Li Ka Shing Faculty of Medicine, the University of Hong Kong (HKU) discovered an alternative strategy by repositioning colloidal bismuth subcitrate (CBS), an antimicrobial drug against Helicobacter pylori (H. pylori)- related ulcer.

It uses lead, or a lead - bismuth eutectic mixture, as the working fluid instead of water.

New compounds based around bismuth, which are simple to make and cheap to work with, have caused the field to take off.

Some hurdles remain before bismuth ferrite will be ready for prime time, though: Power — the rate of energy output — relies not only on voltage but also on current.

The NICO Project is a development stage primary cobalt asset consisting of a planned mine, mill and concentrator in the Northwest Territories and hydrometallurgical refinery in Saskatchewan to produce cobalt sulphate, gold, bismuth ingot and oxide, and copper cement.

Specifically, it was unclear whether the segregated bismuth atoms can form reconstructed superstructures, the existence of which was not expected at the general grain boundaries, but have been revealed in this new study.

The chunk of the ice core that corresponds to the Inca Empire, about 1438 to 1532, shows a gradual increase in bismuth beginning around 1480, which the researchers believe could mark the spread of a new bronze alloy across the Andes.

Upham et al. used nickel dissolved in molten bismuth to pyrolyze methane to release hydrogen and form carbon, which floats to the surface of the melt, where it can be removed.

Replace the lead with its less toxic cousin bismuth and you are still at the mercy of the fluctuating price of tellurium, a metallic by - product of copper mining.

Coolants of liquid lead or a lead - bismuth solution have been used.

They start with an electrically charged grid of squares that are slightly smaller than those usually formed by bismuth ferrite.

The new materials, which generate an electric field when squeezed, copy the crystal structure of conventional piezoelectric materials but use bismuth instead of lead.

The researchers report finding a viable alternative in specially prepared bismuth ferrite film that has piezoelectric properties on par with lead - based compounds.

This has been demonstrated by preparing more complex materials, such as lithium cobalt oxide — a cathode material for lithium batteries; bismuth manganese oxide — a multiferroic material; and a 90 degrees Kelvin (K) superconducting Yttrium barium copper oxide material.

Although researchers have known for years about bismuth ferrite's piezoelectric properties, it could not be made to produce enough voltage to be considered as a replacement for lead, says Ramamoorthy Ramesh, a professor of physics and of materials science and engineering at U.C. Berkeley who contributed to the research led by Robert Zeches, one of Ramesh's graduate researchers at Berkeley's Department of Materials Science and Engineering.

Their versions, which have been in development for more than a decade, use circulating molten metal — sodium and lead bismuth, respectively — as coolants and heat conduits instead of water.

Robert Zeches, Ramamoorthy Ramesh and colleagues at University of California, Berkeley have developed a way to reproduce this behaviour using layers of non-toxic bismuth ferrite, which naturally forms into a square crystal structure.

«No one could control the structure of bismuth so that it could perform as well as lead and lead - based compounds as a piezoelectric substance,» he adds.

Eventually the synthetic chemical bismuth subsalicylate — also the key ingredient in Pepto - Bismol — replaced kaolin, but the clay is still used today in other ways.

By 2008, Hasan's group had demonstrated the effect in crystals of bismuth antimonide, which were dubbed topological insulators.

Novel designs with alternative cooling fluids other than water, such as Transatomic Power's molten salt — cooled reactor or the liquid lead — bismuth design from Hyperion Power, are in development.