Sentences with phrase «controlled by the electron»

We use sound waves controlled by the electron energies to interpret the crystal, with echoes marking the passing high symmetry points.

Not exact matches

For the first time, they managed to control the shape of the laser pulse to keep an electron both free and bound to its nucleus, and were at the same time able to regulate the electronic structure of this atom dressed by the laser.

It is not currently feasible to engineer a material atom by atom, let alone control the quadrupolar behavior of electrons.

«By twisting and controlling the molecular bonds with light,» Awschalom says, «it is possible to operate on the electron spins as they move through the chemical structure.»

This dual state would make it possible to control the motion of the electrons exposed to the electric field of both the nucleus and the laser, and would let the physicists to create atoms with «new,» tunable by light, electronic structure.

Solid - state systems, such as those in computers and communication devices, use electrons; their electronic signaling and power are controlled by field - effect transistors.

At these «beamlines» scientists harvest X-rays produced by the electrons as they pass through carefully controlled magnetic fields (see «Europe's shining new light», New Scientist, 14 March 1992).

This work has demonstrated a successful control of a phase transformation from the layered SrNbO3.4 to the perovskite SrNbO3 with atomic precision by manipulating a focused sub-Angström electron beam to any selectable region.

The illustration, based on electron micrographs and created by the Centers for Disease Control and Prevention, shows one of these antibiotic - resistant bacteria.

The team, led by Prof. Yuichi Ikuhara, applied the focused electron beam of a scanning transmission electron microscope (STEM) to irradiate SrNbO3.4 crystals, and demonstrated a precise control of a phase transformation from layered SrNbO3.4 to perovskite SrNbO3 at the atomic scale.

The researchers» next goal is «to manipulate and control a single electron and its spin on double - dot single - electron devices by using asymmetric side-gate electrodes to demonstrate spin qubits,» said Majima.

Submitted by electrical engineer Steve Lyon, the playfully named Inti the Sun God is a picture of a silicon chip that is designed to control electrons which float atop liquid helium.

This is a schematic of an optical tweezer used in a vacuum chamber by Purdue University researchers, who controlled the «electron spin» of a levitated nanodiamond.

Depending on their size, so called near - fields (electromagnetic fields close to the particle surface) were induced by the laser pulses, resulting in a controlled directional emission of electrons.

By controlling electrons, that atom can modulate the flow of information and so be the foundation of a new kind of ultrafast, ultracompact computer.

By reading and analyzing this current, FAU researchers have found that quantum mechanical interference of electron waves can be used to control current on extremely short time scales.

Electron ejection from multiple N2 orbitals, controlled by the molecule's orientation relative to a laser, produces attosecond light spectra that can reveal molecular dynamics.

They studied how this spontaneous voltage depends on the current direction, temperature, and the chemical composition (the level of doping by strontium, which controls the electron density).

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

«Our approach provides atom - by - atom control of the size and electron - by - electron control of the charge state of metal clusters on surfaces,» said Dr. Grant Johnson, a physical chemist involved in the study and former Linus Pauling Fellow who recently joined the Laboratory as a full - time scientist.

Here, we propose a dissipative scheme that achieves the preparation of pairs of nuclear spins in long - lived singlet states by a protocol that combines the interaction between the nuclei and a periodically reset electron spin of a nirogen - vacancy center with local radio - frequency control of the nuclear spins.

These free radicals (such as: superoxide, hydroxyl radical, and peroxynitrite) are controlled by antioxidant systems and when these systems can't cope with the amount of free radicals produced these free radicals scavenge for electrons from proteins, cell membranes, and DNA.

Control of free radicals is a natural process by which antioxidants «scavenge» for these free electron groups whereby neutralizing them.