Sentences with phrase «beam of electrons»

Rather than the light used in a traditional microscope, this technique uses focused beams of electrons to illuminate a sample and form images with atomic resolution.

The accelerator produces a small, intensely concentrated beam of electrons called a pencil beam.

Under a strong electric field, the cathode emits tight, high - speed beams of electrons through its sharp nanotube tips — a phenomenon called field emission.

Matter wave tractor beams could be made with beams of electrons, Novitsky says.

Scanning electron microscopes use beams of electrons rather than light for illumination and magnification.

But they also showed beams of electrons shooting out from Jupiter's atmosphere.

Electronic lenses would represent a fundamentally different approach from existing electron microscopes, which bombard a surface with high - energy beams of electrons, obliterating any subtle effects within the objects being observed.

In this experiment, a 5.5 - GeV beam of electrons was directed onto a target of liquid hydrogen, which has a single proton in its nucleus.

But there were also beams of electrons actually shooting out of Jupiter's atmosphere, which isn't seen on Earth.

To create such high intensity, scientists begin by creating beams of electrons and positrons and keeping them tightly corralled with more than 1,000 magnets as they zip around the accelerator 100,000 times per second.

So Banhart used a kind of substitute soldercreated on the spotto link two crossed nanotubes: he focused a narrow beam of electrons from a scanning electron microscope at the point where the tubes met, thereby converting contaminants on their surfaces into bridges made from graphite - like carbon that can conduct electricity.

Other priorities include: upgrading the LHC, which shut down in February for two years to boost its energies from 7 TeV to 14 TeV; plans to build an International Linear Collider in Japan, to collide beams of electrons and positrons as a complement to the LHC's proton findings; and a major US project to exploit high - intensity neutrino beams generated at the Fermi National Accelerator Laboratory in Batavia, Illinois.

To be built on the campus of the University of Rome Tor Vergata on the outskirts of the city, SuperB will accelerate beams of electrons and positrons inside two 1.2 - kilometer - circumference rings and study the decay of particles such as B mesons and tau leptons that are produced when the beams collide.

A threadlike beam of electrons wiggling through a gauntlet of magnets in a storage ring produces the world's brightest ultraviolet light and X rays.

In radiation therapy, linear accelerators deliver highly focused beams of electrons to destroy cancerous cells.

The way in which the researchers observed the radiation reaction was by colliding an ultra-intense laser with a high - energy beam of electrons.

In the experiment, the Jefferson Lab Continuous Electron Beam Accelerator Facility produced a 5.01 GeV beam of electrons to probe the nuclei of carbon, aluminum, iron and lead.

A beam of electrons was first observed to be accelerated with a «gradient» — or energy transfer rate — of 300 MV / m, which is very high for present - day accelerators, in a device rather like a microchip.

Oddone envisioned an accelerator that uses two particle beams of unequal energies — specifically, a beam of electrons that moves with three times more energy than a beam of positrons coming from the opposite direction.

An electron microscope, which uses a beam of electrons as a light source, recorded the raw data that was then analyzed to create 3 - D reconstructions of the structures.

The researchers direct a beam of electrons onto a thin, dielectric foil, where the electron wave is modulated by irradiation with an orthogonally oriented laser.

This «mask» partially blocks a beam of electrons shone at it, though those that get through corkscrew into a vortex between 1 and 100 nanometres in diameter (Nature, DOI: 10.1038 / nature09366).

Researchers in Missouri used transmission electron microscopy, a technique in which a beam of electrons is transmitted through an ultra-thin material, to confirm the crystalline properties.

It creates images by pumping a beam of electrons through multiple frozen samples containing millions of proteins.

SET a beam of electrons twisting, and the resulting vortex could be just the tool to manipulate atoms.

When a beam of electrons or positrons flies through a gas, they scatter off the gas particles at predictable rates.

Made of a single molecule, the «vehicle» has four wheel - like paddles that rotate in the same direction when zapped with a beam of electrons.

BEAMS of electrons can pick up and move tiny objects, just like optical tweezers that manipulate items using light.

This technique works by shining a beam of electrons through a sample and observing how the electrons are deflected by the material they've passed through.

«We added the yttrium oxide to the diamond with a technique known as electron beam evaporation, which involves using a beam of electrons to transform molecules of yttrium oxide from the solid state to the gaseous state so that they can be made to cover a surface and solidify on it.»

Instead, the researchers shot in a beam of electrons to generate light of all wavelengths within the waveguide and measured the light leaking out of it.

Miao and his team used a technique known as scanning transmission electron microscopy, in which a beam of electrons smaller than the size of a hydrogen atom is scanned over a sample and measures how many electrons interact with the atoms at each scan position.

Some theorists think that powerful lightning bolts may send out beams of electrons that get shot to far - flung places along Earth's magnetic field lines.

A beam of electrons fired at a lump of lead makes small particles of lead evaporate and recondense elsewhere in the chamber.

They then used a beam of electrons to turn them back into neutral molecules, each of which split into energetic fragments.

Nicolas Barry at the University of Warwick, UK, and his colleagues fired a beam of electrons at a thin film of molecules containing the metal osmium, carbon and other elements.

Much like in an old tube television where a beam of electrons moves over a phosphor screen to create images, the new microscopy technique works by scanning a beam of electrons over a sample that has been coated with specially engineered quantum dots.

The new microscopy technique, described in the journal AIP Advances, uses a beam of electrons to excite a specially engineered array of quantum dots, causing them to emit low - energy visible light very close to the surface of the sample, exploiting so - called «near - field» effects of light.

Much like in an old tube television where a beam of electrons moves over a phosphor screen to create images, the new technique works by scanning a beam of electrons over a sample that has been coated with the quantum dots.

The collaborative effort found that the quantum dots, which have a unique core - shell design, efficiently produced low - energy photons in the visible spectrum when energized with a beam of electrons.

As the magnetic fields start to decay, they cause a beam of electrons to flow in one direction and a beam of positive ions (atoms that have lost electrons) to flow in the opposite direction.

Both it and SuperB will increase production of B - meson and other particles by hugely compessing the beams of electrons and positrons in a scheme developed by the SuperB team.

Researchers used a new tool — scanning transmission electron microscopy, or STEM, in which a beam of electrons plays the role that a beam of light normally does.

They then merged the hydronium with a beam of electrons and measured how often hydronium converted into water.

This past week, on Feb. 26, scientists there succeeded in circulating a beam of electrons moving near the speed of light in the opposite direction.

Mysterious short - wavelength rays of an unknown type (therefore designated X) emerged when Röntgen shot cathode rays (beams of electrons) through a glass tube.

Klie and his colleagues devised a way to take temperature measurements of TMDs at the atomic level using scanning transition electron microscopy, which uses a beam of electrons transmitted through a specimen to form an image.

The cell was then fit into a microscope that uses a beam of electrons, rather than light, to obtain images.