Sentences with phrase «electrical resistance r»

Electrical resistance R, measured for different temperatures.

Finally, Yoichi Ando and colleagues at the Central Research Institute of the Electric Power Industry in Tokyo, Japan, report that in nonsuperconducting LSCO and YBCO, the electrical resistance is smaller for current flowing in the direction in which the stripes are thought to run.

For example, electrical resistance is a manifestation of electrons scattering off the atoms.

But increased electrical resistance is no substitute for genuine feedback and the MINI's Sport mode robs it of what information is coming back to the driver from the front wheels.

Not exact matches

It is contemplated that a user that may be nervous or engaging in speaking falsehoods may exhibit different galvanic skin response» — a change in the electrical resistance of the skin that is a physiochemical response to increased sympathetic nervous system activity — «than a more confident, truth telling individual.»

Superconductors are materials that, when chilled, allow electrical current to flow freely, with zero resistance.

The internal resistance, or opposition to electrical current flow, may be different for a human arm than for an animal with scales or fur, like a crocodile or a dog, Catania notes.

Technically, I'm directing the arrow by altering my physical state — the electrical resistance at the tips of my fingers and my heart rate.

Superconductivity is at the heart of intensive research in physics, in particular because of its remarkable electronic properties, such as the absence of electrical resistance.

The most celebrated quantum materials are the high - temperature superconductors discovered in the 1980s, so named for their ability to conduct electrical current without resistance at temperatures well above those of traditional superconductors.

They found that when a negative electrical potential is applied to skin on various parts of the arm, creating a current, that stretch of skin exhibits a low resistance to a subsequent current flowing through the skin.

Because that's hard to do in the nanosized clusters, the measured electrical resistance jumped over 3000 % — the largest such effect ever seen (see figure).

Researchers have found a way to trigger the innate, but previously hidden, ability of graphene to act as a superconductor — meaning that it can be made to carry an electrical current with zero resistance.

Chua's equations suggested that a memristor's electrical resistance, or conductivity, would not be constant, like a lightbulb's, but dynamic, and determined by the history of the current that had flowed through the device.

The dramatic conductivity and low electrical resistance of Dirac semimetals may be key to potential applications, including «quantum electricity generators» and quantum computing, Li said.

When superconducting materials are cooled, they can carry a current with zero electrical resistance without losing any energy.

One key parameter identified was the need to match the electrical impedance with an optimum load resistance.

In many crystalline materials, magnetic moments are randomly oriented, which increases the electrical resistance of the material.

The discovery, reported in tomorrow's issue of Nature, relies on a phenomenon called colossal magnetoresistance — a large drop in a material's electrical resistance in response to an applied magnetic field — that has previously been seen only at very low temperatures.

«We've proved that generating entanglement between photons emitted from an LED can be achieved by adding another peculiar physical effect of superconductivity — a resistance - free electrical current in certain materials at low temperatures.»

Strange metals include high - temperature superconductors, which have no electrical resistance at all below a critical temperature that is generally defined as above the boiling point of liquid nitrogen (196 °C).

A film with higher resistance has lower electrical conductivity, meaning that more voltage must be applied to send a signal through it, which further degrades the material.

The change in electrical resistance through a magnetic field is called magnetoresistance and is very important in technology.

Superconductivity holds great promise for delivering energy without the usual losses due to heat and electrical resistance that we find with regular power lines, but it is notoriously tricky to achieve.

Either the increased concentration of free calcium ions or their increased mobility (likely both, the researchers speculate) results in a decrease in the electrical resistance throughout the material, which can be detected with a multimeter connected to electrodes embedded in the film.

The whole accelerator is cooled to just 2 kelvins above absolute zero; the frigid temperature keeps the material's electrical resistance down and prevents energy from escaping.

On the other side, sensors can be added to measure pressure, temperature or electrical properties such as resistance.

If added viruses destroy a continuous cell layer on the electrodes, for example, the electrical resistance measured between the electrodes is reduced.

There is no electrical resistance in a superconductor, and therefore no energy loss.

While we have demonstrated direct correlations between oxygen content, crystal structure, and electrical resistance, the same ionotronic concept could be utilized to control other material properties,» says Professor Sebastiaan van Dijken, who is a coauthor on the paper with Yao.

These are materials in which all resistance to an electrical current disappears at temperatures ranging from near absolute zero to as «warm» as around — 170 degrees Fahrenheit -LRB--- 112 degrees Celsius).

A new study from the Cava lab has revealed a unifying connection between seemingly unrelated materials that exhibit extreme magnetoresistance, the ability of some materials to drastically change their electrical resistance in response to a magnetic field, a property that could be useful in magnetic memory applications.

He was puzzled by the changes in the nanotubes» electrical resistance when he turned the gauge on and off.

This law is widely obeyed in weak applied fields, which means that most material samples can be ascribed a definite electrical resistance, measured in Ohms.

Recent research has shown that in two - dimensional systems, including semiconductors, electrical resistance decreases and can reach almost zero when they are subjected to magnetic and microwave influence.

These perovskites display what is called colossal magnetoresistance: their electrical resistance changes dramatically when exposed to a magnetic field, which makes them ideal for high - capacity data storage.

They are particularly appreciated for their stiffness, extreme resistance to high temperature, high electrical resistance / breakdown voltage and resistance to corrosion.

In investigating the new technique, the researchers at UIUC were diligent in their testing of the formed graphene via electron microscopy, atomic force microscopy, Raman spectroscopy, and electrical resistance measurement to confirm that it maintained its shape and consistency after forming.

Metals are used for electricity transmission, but energy is lost as heat because of electrical resistance.

From the macroscopic standpoint, superconductivity is a property of certain materials that, when cooled below a given temperature, conduct electricity without any energy loss — i.e., with zero electrical resistance.

In the absence of electrical resistance, if a magnet is brought up close to a cold superconductor, the magnet effectively «sees» a mirror image of itself in the superconducting material.

Leading - edge research by a team of SUNY College of Nanoscale Science and Engineering (CNSE) scientists has been published in ACS Nano after the scientists evaluated ultrathin indium (III) selenide (In2Se3) nanosheets and discovered that their electrical resistance drops significantly when exposed to light.

In particular, injured areas of the body have less electrical resistance and are more susceptible to being damaged through the process.

If you BIA test after eating a large meal, electrical resistance will be lower than usual and thus you'll register leaner than you actually are.

One of the primary tools used to measure the health of these membranes is transepithelial electrical resistance (TEER), an ohmmeter with microscopic filament attachments that allows you to measure both the inside and outside of the membrane, giving you an indication of the resistance across the epithelial layer.

The reason was because, as I'm sure you know, higher heat = higher electrical resistance.

Apparently, the contact pins on the EPS control unit may not have been welded correctly, which could lead to increased electrical resistance in the connection that could lead to a fire.

Hello - coolant temperature sensors are variable resistor devices - the colder the coolant temperature, the greater the electrical resistance value reported to the engine computer.

Resistance of electrical components increases with temperature and if the coil is the issue that is why the stalling only occurs once the engine is hot.

We do know that acupuncture leads to the release of endorphins, and that acupuncture points are different in regards to their concentration of nerve endings, mast cells and have a reduced electrical resistance among other things.