Sentences with phrase «electron motion in»

Creating a superlattice by placing graphene on boron nitride may allow control of electron motion in graphene and make graphene electronics practical.

As practiced in our group, MBE allows for exploration of correlated electron motion in materials with very low residual disorder.

Because of the sheer number of electrons interacting with each other, it is not possible to solve exactly the problem of many - electron motion in solids using quantum mechanical theory.

With two XUV pulses, we would be able to «film» the electron motion in the inner atomic shells without perturbing their dynamics,» says Dr. Boris Bergues, the leader of the new study.

In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very bright, and the photons delivered must have sufficiently high energy.

To observe ultrafast electron motions in space and time, one needs to measure the position of electrons in the material with a precision of the order of 0.1 nm (0.1 nm = 10 - 10 m), roughly corresponding to the distance between neighboring atoms, and on a sub-100 fs time scale (1 fs = 10 - 15s).

This field focuses on phenomena such as electron motions in molecules and atoms, which can take place on attosecond timescales (an attosecond lasts for a billionth of a billionth of a second, 10 - 18 sec).

Not exact matches

But how credible is Kim's scenario, according to which physics can in principle give a complete account of all the motions of the electrons in, say, the hands, throat, and mouth of an American president giving a speech?

The orbit of an electron around a nucleus conceived as a route of occasions would not significantly differ from that orbit conceived as the route of the continuous motion of the electron.2 Hence, Whitehead gave up his work on reformulating the equations of relativity theory, as well as any quest for ways in which his initial work would yield some confirmably different prediction from those of the equations of orthodox relativity theory.

Fairly weak forces within and between these layers arise from cooperative motions of the electrons in the outer electronic shells of the diiodine molecules.

Next, recent developments in quantum physics have revealed an ineradicable indeterminacy concerning motions of electrons, and thus we may have a hint from physical science itself that there is some contingency in the ultimate physical particles.

Thermoelectrics work when they connect something hot with something cold: «The thermal motion of the electrons in the material depends on the temperature,» explains Bühler - Paschen.

That is the unimaginably short time scale on which processes such as the motion of an electron in an atom can be studied.

For example, suppose you accept that God steps in every so often to fix the outcome of a quantum event in the brain — manipulating the motion of electrons to cause a neuron to fire, perhaps, influencing your decision on whether to become a priest or a scientist.

Since the ball is made of elementary particles (quarks and electrons), you could in principle describe its motion without making any reference to tennis balls:

The method, called ultrafast electron diffraction (UED), could help scientists better understand the role of nuclear motions in light - driven processes that naturally occur on extremely fast timescales.

Using SLAC's instrument for ultrafast electron diffraction, researchers were able to directly see the motions of atomic nuclei in vibrating molecules for the first time.

«High - speed «electron camera» films atomic nuclei in vibrating molecules: Method gives scientists new ways to study rapid nuclear motions in nature's light - dependent processes.»

I wanted to see the electrons move, not just to explain their motion by measuring a change of light transmission and reflection in the material,» said Prof Keshav Dani, leader of Unit.

Physicists from Ludwig - Maximilians - Universitaet (LMU) in Munich have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.

In this image, patterns captured at attosecond intervals have been superimposed, thus revealing, in real time, the kind of electron motions that underlie atomic and subatomic phenomenIn this image, patterns captured at attosecond intervals have been superimposed, thus revealing, in real time, the kind of electron motions that underlie atomic and subatomic phenomenin real time, the kind of electron motions that underlie atomic and subatomic phenomena.

The rods absorb light, which releases electrons and sets in motion a chain reaction that ends with the water in the beaker releasing its oxygen, as desired.

The ultimate speed limit in electronic circuitry is set by the motion of the electrons themselves.

From the rotation and the nuclear motion in molecules captured in the last decades with femtosecond technology, we are now able for the first time to track in real time the response of electrons bound in atoms,» Dr. Goulielmakis pointed out.

The Weyl semimetal state is induced when the opposing motions of the electrons cause the Dirac cones to split in two (illustrated on the left by outward facing electrons, opposite the inward facing electrons on the right).

Electron motions, says Sachdev, «look more like the spread of molasses than pointlike objects traveling in a straight line.»

In the UChicago experiment, photons travel back and forth between mirrors, while their side - to - side motion mimics the behavior of massive particles like electrons.

In ordinary magnets, both individual electron spins and the motion of electrons in their atomic orbitals generate magnetic fieldIn ordinary magnets, both individual electron spins and the motion of electrons in their atomic orbitals generate magnetic fieldin their atomic orbitals generate magnetic fields.

In contrast, the coordinated, marching - band - like motion of electrons in vanadium dioxide is detrimental to heat transfer as there are fewer configurations available for the electrons to hop randomly between.&raquIn contrast, the coordinated, marching - band - like motion of electrons in vanadium dioxide is detrimental to heat transfer as there are fewer configurations available for the electrons to hop randomly between.&raquin vanadium dioxide is detrimental to heat transfer as there are fewer configurations available for the electrons to hop randomly between.»

Here, we demonstrate the potential of time - resolved, femtosecond electron energy loss spectroscopy (EELS) for mapping electronic structural changes in the course of nuclear motions.

In the MMS mission, each of the four identical spacecraft has numerous instruments measuring magnetic and electric fields as well as the motion of ions and electrons.

Fundamentally, the impulse depends upon how the difference in energy along the two paths compares with the energy of the laser photons, where the atom's energy is formed of potential (internal electron configuration) and kinetic (external motion) parts.

For instance, it was believed that the light from the smaller lasers would need to be precisely matched in color, phase, and other properties in order to produce the electron - accelerating motion within the plasma.

The new type of accelerator, known as a laser - plasma accelerator, uses pulses of laser light that blast through a soup of charged particles known as a plasma; the resulting plasma motion, which resemble waves in water, accelerates electrons riding atop the waves to high speeds.

Published by the Condensed Matter research group at the Nordic Institute for Theoretical Physics (NORDITA) at KTH Royal Institute of Technology in Sweden, the Organic Materials Database is intended as a data mining resource for research into the electric and magnetic properties of crystals, which are primarily defined by their electronic band structure — an energy spectrum of electrons motion which stem from their quantum - mechanical properties.

This pulse is only some tenths of a trillionth of a second long and transfers energy to the electrons in the molecule, exciting them into helical motion.

The results give researchers a potential new, solid - state tool for «attosecond science,» which explores processes like the motions of electrons in atoms and the natural vibrations of molecules.

We initiated the solvent motion by exciting the hydrated electron in the cluster.

The material of their choice, the compound Ag2BiO3, is exceptional for two reasons; on the one hand it is composed of the heavy element bismuth, which allows the spin of the electron to interact with its own motion (spin - orbit coupling)-- a feature that has no analogy in classical physics.

In our current electronic equipment, information is transported via the motion of electrons.

This influences the motion of the electron, resulting in an electric current that the researchers can measure.

In particular, electron pulse technology still has a long way to go to achieve the temporal resolution required to capture the motions of electrons inside a material.

This motion would be detected by measuring image charges, which are induced by the moving electrons, flowing through another electrode using a commercially available current amplifier and lock - in detector.

In the current issue of Journal of Chemical Physics, Benjamin Freyer, Flavio Zamponi, Vincent Juve, Johannes Stingl, Michael Woerner, Thomas Elsaesser and Majed Chergui report the first in - situ x-ray imaging of electron and atom motions induced by such an electron transfer excitatioIn the current issue of Journal of Chemical Physics, Benjamin Freyer, Flavio Zamponi, Vincent Juve, Johannes Stingl, Michael Woerner, Thomas Elsaesser and Majed Chergui report the first in - situ x-ray imaging of electron and atom motions induced by such an electron transfer excitatioin - situ x-ray imaging of electron and atom motions induced by such an electron transfer excitation.

Those electrodes apply a voltage that sets the electrons in motion.

Application of an external electric field to the crystal sets the electrons in motion, again strongly influenced by the spatial correlations among all electrons.

Moreover, the method has the potential to visualize not only atoms, but also electrons in motion.

Still the achieved theoretical model represents just a first step in the interpretation of the measured electron race since intra-atomic motion and propagation in the crystal are treated separately.

Electron motions induced by a strong electric field are mapped in space and time with the help of femtosecond x-ray pulses.

In the experiments, electrons are set in motion by a very strong electric field which is provided for the very short time interval of 50 fs (1 fs = 10 - 15 s) by a strong optical pulse interacting with the LiH materiaIn the experiments, electrons are set in motion by a very strong electric field which is provided for the very short time interval of 50 fs (1 fs = 10 - 15 s) by a strong optical pulse interacting with the LiH materiain motion by a very strong electric field which is provided for the very short time interval of 50 fs (1 fs = 10 - 15 s) by a strong optical pulse interacting with the LiH material.