Sentences with phrase «as electrical conductivity»

The technology patented by the UJI combines graphene and organometallic compounds in a single material without altering the most interesting properties of graphene, such as its electrical conductivity.

Not exact matches

Scientists initially used metal oxides as asymmetric supercapacitor electrodes, but, as metal oxides do not have particularly high electrical conductivities and become unstable over long operating cycles, it was clear that a better alternative was needed.

«We find the conditions for brines to be produced, but if you want to measure them directly you need some other kind of measurement,» he says, such as an instrument that can look for changes in electrical conductivity.

Since graphene was experimentally discovered in 2004, it has been the focus of vigorous applied research due to its outstanding properties such as high specific surface area, good thermal and electrical conductivities, and many more properties.

Ultimately, the organic compounds act as» hinges»: if the material is bent, they maintain the electrical conductivity.

Many people picture electrical conductivity as the flow of charged particles (mainly electrons) without really thinking about the atomic structure of the material through which those charges are moving.

Rice materials scientist Rouzbeh Shahsavari and alumnus Navid Sakhavand first built atom - level computer models of pillared graphene — sheets of graphene connected by covalently bonded carbon nanotubes — to discover their strength and electrical properties as well as their thermal conductivity.

Another set of sensors measure electrical conductivity, which Burger says can be used as a proxy for measuring nitrate.

Graphene is essentially an ultra-thin sheet of carbon and possesses exciting properties such as high mechanical stability and remarkable electrical conductivity.

The material that Wang and his team created restores all properties needed for use as a dielectric in wearable electronics — mechanical strength, breakdown strength to protect against surges, electrical resistivity, thermal conductivity and dielectric, or insulating, properties.

In this manner stability and conductivity can be improved to such an extent that the material can be deployed not only as a blocking layer, but even as a transparent, electrical contact.

This fluctuation, also known as Kondo resonance, increases the Seebeck coefficient with keeping metal - like high electrical conductivity at low temperature, and therefore the power factor.

Less than two years ago, Kanatzidis and his team, with postdoctoral fellow Lidong Zhao as protagonist, identified tin selenide as a surprisingly good thermoelectric material; it is a poor conductor of heat (much like wood)-- a desirable property for a thermoelectric — while maintaining good electrical conductivity.

Oligothiophene (4T) and polythiophene (P3HT), two typical organic semiconductors, can be doped with a second type of molecule such as a strong electron acceptor (F4TCNQ) for example to control the electrical conductivity.

Bismuth is a historically interesting element for scientists, as a number of important discoveries in the metal physics world were made while studying it, including important observations about the effect of magnetic fields on electrical conductivity.

In certain magnetic materials, the electrical conductivity of a thin layer of material changes in steps as a small magnetic field is varied, increasing and decreasing in jumps of a certain size.

This is because the electrical conductivity of graphene drops as soon as foreign molecules bind to it.

«Now we want to show not only that we can pass DNA through graphene but that we can use it as a sensing material because of its electrical conductivity.»

As a plasma, helium's electrons and protons are not bound together, resulting in very high electrical conductivity, even when the gas is only partially ionized.

First, the team tried to utilize water as a top-gate dielectric to manipulate graphene's electrical conductivity.

The study, reported today in the journal Nature Nanotechnology, presents the newest entry in a class of substances known as bicontinuous jammed emulsion gels, or bijels, which hold promise as a malleable liquid that can support catalytic reactions, electrical conductivity, and energy conversion.

These hybrids have advantageous combination of properties, such as biocompatibility, high tensile strength and thermal conductivity as well as superb chemical stability and electrical insulation.

In numerous tests, the researcher and his team investigated the nano - material graphene, whose extremely high specific surface area of up to 2,600 m2 / g and high electrical conductivity practically cries out for use as an electrode material.

Spatially - resolved characterization as a function of position on the thin film, and hence as a function of the graded thin film parameter: chemical composition (XRF, RBS) and crystallographic structure (XRD, Raman); microstructure (SEM, AFM) and surface properties (PES / XPS / UPS, KP); electrochemical (SECM), electrical (conductivity, Seebeck), optical (uv - vis, FTIR, PL) properties.

The air - fuel mixture in an engine's cylinders has a certain electrical conductivity, which varies — especially as «knock,» or detonation, occurs in a cylinder.

These are the kinds of very complex space weather discussions that need to occur, and at the end of the day CO2 is DEPENDANT on these solar events as CO2 is ELECTRICAL from a conductivity standpoint in the oceans, connected to surface lows and outgassing and ocean surface ion counts.

The fact that the Little Ice Age (about A.D. 1500 to 1900) stands out as a significant climatic event in the oxygen isotope and electrical conductivity records confirms the worldwide character of this event.

Pure water with no exogenous ions in it is a very poor electrical conductor (and even, in fact, functions as an insulator), but because water is such an excellent solvent, it always has impurities in it and these impurities, even in «deionized» water in laboratories, are what creates the electrical conductivity.

Verily's health - tracking Study Watch plays a central role, of course, as it will track everything from heart rate to ECGs to the skin's electrical conductivity.

Performed superior experimentation on operating fuel cells (zinc air) that determined suitability of separators and methods of zinc oxide separation by filtration, and experiments determining physical chemical properties of KOH electrolyte, such as viscosity and electrical conductivity.