Sentences with phrase «electrons electrical charge»

Spintronics exploits the intrinsic spins of electrons and their resulting magnetic properties in material, as well as the electrons electrical charge, to store and process information.

Not exact matches

When driven with electrical current, electrons and positively charged holes become confined in the dots and recombine to emit light — a property that can be exploited to make lasers.

What's more, electrical charges can be positive (like a proton's) or negative (like an electron's).

According to Sir Nevill Francis Mott's prediction in 1937, the mutual repulsion of charged electrons, which are responsible for carrying electrical current, can cause a metal - insulator transition.

The satellite, which swoops on an egg - shaped orbit to within 350 kilometers of Earth's surface, detected electrical impulses from electrons coursing upward within charged sheets that shadow the downward flowing auroral electrons.

The new 3 - D structure, which was obtained using X-ray crystallography and electron microscopy, revealed that the outer surface of the Zika NS1 protein has substantially different electrical - charge properties than those of other flaviviruses — indicating it may interact differently with the members of an infected person's immune system.

Unlike a black hole in space, the X-rayed atom does not draw in matter from its surroundings through the force of gravity, but electrons with its electrical charge — causing the molecule to explode within the tiniest fraction of a second.

Moving charge generates both electrical and magnetic fields, which resist change and back - react on the electron's motion.

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.

«The very idea of using protons rather than electrons to move charge encounters intuitive resistance,» says John Roberts, an electrical engineer at Cambridge University in the U.K. «People know how to control electrons.

«Factor in a femtosecond charge transfer rate and MX2 semiconductors provide an ideal way to spatially separate electrons and holes for electrical collection and utilization.»

The electrons not only carry charge, but also carry energy, so that thermal conductivity is proportional to the electrical conductivity.

Carrying no electrical charge, neutrinos are attracted neither to protons nor electrons, so they don't interact with electromagnetic fields.

A US - Chinese team of nanotechnologists used a specially outfitted transmission electron microscope to capture the footage, allowing the effect of electrical charging on nanostructures to be seen in action for the first time.

The structure of this complex, determined using cryo - electron microscopy, shows how it converts near - infrared light into an electrical charge in order to power cell metabolism, which enables this bacterium to live at the extreme red limit of photosynthesis on Earth.

These temporary adhesive forces happen because electrons orbiting the nuclei of atoms are not evenly spaced, creating a slight electrical charge.

Gallium arsenide is a technologically important narrow - band - gap semiconductor, in which the excitation of electrons from the valence into the conduction band produces charge carriers that can transport electrical current through electronics components.

In the same Cambridge laboratory in the United Kingdom where the British physicist J.J. Thomson discovered the electron in 1897, European scientists have just developed a new ultra-sensitive electrical - charge sensor capable of detecting the movement of individual electrons.

«The device is much more compact and accurate than previous versions and can detect the electrical charge of a single electron in less than one microsecond,» M. Fernando González Zalba, leader of this research from the Hitachi Cambridge Laboratory and the Cavendish Laboratory, said.

Only after the universe had expanded (and cooled) enough, could a proton (positively charged) hang on to an electron (negatively charged) and become neutral hydrogen (no electrical charge).

To date, all the BPVs demonstrated have located charging (light harvesting and electron generation) and power delivery (transfer to the electrical circuit) in a single compartment; the electrons generate current as soon as they have been secreted.

positron A subatomic particle with the mass of an electron, but a positive electrical charge.

Its single electron orbits a single proton, and the net effect is no electrical charge.

An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons, giving the atom a net positive or negative electrical charge.

An atom that has either lost or gained one or more electrons, so that it has an electrical charge.

The job of antioxidants is to «mop up» free radicals, meaning that they neutralize their electrical charge and prevent the free radical from taking electrons from other molecules.

It's called earthing because some scientists theorize that to stay healthy, particularly with all the stray electrons we're exposed to from constant smart phone and computer use to insulation from our cars and shoes from earth energy, our bodies need a daily charge from mild electrical currents surging through the earth's surface.

Antioxidants are often described as «mopping up» free radicals, meaning they neutralize the electrical charge and prevent the free radical from taking electrons from other molecules.

Electrons have a negative electrical charge.

Once an atom has fewer electrons, with a negative electrical charge, than protons, with a positive electrical charge, this atom now has more positive electrical charge than negative electrical charge - we therefore say that this atom is, itself, positively charged.