Sentences with phrase «atom as a probe»

«A carbon monoxide molecule adsorbed onto the tip of the AFM «needle» leaves a single oxygen atom as the probe,» Fischer explains.

Not exact matches

We believe that it will also prompt new experiments focusing on the dynamical properties of the atoms at nanostructures, allowing us to understand the contribution of the previously little probed dynamical structure studies of atomic clusters, towards the physical properties such as catalytic relativities.»

As its sharp - tipped probe scans a surface, the extent to which electrons «tunnel» between the tip and surface indicates changes in height caused by the presence of atoms.

Now a transistor that controls the flow of atoms, rather than electrons, could be used as a model to probe the mysterious electrical property of superconductivity.

The Brookhaven experiments smashed nuclei of gold atoms together to probe the same questions as ALICE.

Electrons slip or «tunnel» across the gap, and as the probe slides across the surface, the changing current reveals the ridges and valleys of individual atoms.

With atoms being so well characterized, it is possible to use them as probes — to look for tiny changes in their properties stemming from interactions with other atoms or the environment.

Ordinarily the atom acts as a barrier to photons from the probe beam because it would first absorb them — going from its «ground» state to an «excited» state — and then shoot them back, that is, reflect them.

Called the cosmic microwave background (CMB) radiation, this afterglow was produced about 370,000 years after the big bang when the first atoms formed and has been studied in great detail by satellites, such as NASA's WMAP probe.

The heightened accuracy of the technique is precisely due to the use of a solo atom as a «probe» in obtaining these measurements.

Kumar Wickramasinghe, who developed the microscope with Yves Martin at IBM's Thomas J. Watson Research Center in New York, says the probe feels the surface from a height of between 3 and 5 nanometres and detects features as small as 10 atoms across.

Just short of physically shaking the system, the group «created a displacement between the atoms and the laser beam,» moving the laser beam from side to side as it probed the cloud of atoms.

When the coupling laser came back on, the incoming jolt of energy caused the altered sodium atoms to shift energy levels, in the process releasing a light pulse of the exact phase and amplitude as the one originally sent in by the probe laser.

Prior attempts to measure the proton's g - factor were not precise as they were restricted to probing protons in atoms, where orbiting electrons disguise the proton's properties.

But the US team did not have access to a wide range of ion beams, such as those capable of probing the heaviest, most exotic atoms.

He then began applying his expertise in microwaves to spectroscopy, which he foresaw as providing powerful new tools for probing the structure of atoms and molecules and for controlling light.

Herbert Funsten is recognized as a world - renowned experimental space scientist and has led science instruments on NASA's Interstellar Boundary Explorer (IBEX) and Van Allen Probes missions and national security instruments on the DOE's SABRS Validation Experiment (SAVE) and Space and Atmospheric Burst Reporting System (SABRS) payloads, while also participating in NASA's Cassini, Two Wide - angle Imaging Neutral - atom Spectrometers (TWINS), Deep Space 1, Mars Odyssey, and Imager for Magnetopause - to - Aurora Global Exploration (IMAGE) missions.

MaCS is a state - of - the - art materials and microstructure characterization laboratory that provides cross-cutting capabilities such as the unique Local Electrode Atom Probe and other surface and tomographic analytical tools.

The high power electron microscopes are used primarily for probing atomic structure of strong, solid materials, such as graphene — a lattice of carbon only one atom thick.

This technique is faster and provides a wider field of view than more traditional 3D techniques such as scanning electron microscopy combined with electron energy - loss spectrometry or atom probe tomography.

Eigler's breakthrough was made possible thanks to the invention of the scanning tunneling microscope (STM) by Gerd Binning and Heinrich Rohrer in 1981, a device that made possible the imaging of atoms by measuring changes in the way electrons hop between a sharp probe and a specimen, as the probe shifts position.

April 13, 2018 - Ensembles of atoms, trapped as vapors in small cells, are exquisitely sensitive to external fields or perturbations, and many sensor devices already use light, and specifically precision spectroscopy, to probe the quantum states of such ensembles...

As a result of the quantum mechanical forces, the individual atoms of the wire form new chemical bonds with the atom at the tip of the STM probe.