Sentences with phrase «beams of electrons through»

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

In standard electron microscopy, scientists shine a beam of electrons through a sample and then, on the other side, detect the electrons, which have been deflected by the material and now carry the information needed to generate an image of the sample.

Called TEM, this is a microscopy approach that shoots a beam of electrons through a tissue to see what interactions occur.

Not exact matches

Suppose, for example, that a beam of electrons is shot through two narrow slits in a metal screen and strikes a photographic film placed a few centimeters behind the screen.

In the case of UED, an electron beam shines through a gas of iodine molecules, with the distance between the two iodine nuclei in each molecule defining the double slit, and hits a detector instead of a screen.

Recording the energy of the electrons that passed through the pulse generates a crisp side - profile of the short laser beam, not unlike a sporting photo - finish image (see right).

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

Accelerating electrons through a series of these cavities allows the generation of an almost continuous X-ray laser beam with pulses that are 10,000 times brighter, on average, than those of LCLS and arrive up to a million times per second.

This is an illustration of an electron beam traveling through a niobium cavity — a key component of SLAC's future LCLS - II X-ray laser.

ORNL's bioreactor features elegance through a permeable nanoporous membrane and serpentine design fabricated using a combination of electron beam and photolithography and advanced material deposition processes.

As the electron beam passes through the magnets, it is first attracted to the positive pole of a magnet.

Then the beam travels through a device called a wiggler, which literally wiggles the electrons to make them produce a precise type of electromagnetic wave.

The beam passed through a chamber where a laser knocked the extra electrons off of about 7 % of the ions, leaving a mix of hydrogen and negatively charged hydrogen ions to react with each other farther down the tube.

To break this limit in crystal size, an extremely bright X-ray beam was needed, which was obtained using a so - called free - electron laser (FEL), in which a beam of high - speed electrons is guided through a magnetic undulator causing them to emit laser - like X-ray pulses.

«It's not a glass lens like you'd find in a camera,» Fischer said, «but we call the technique «electron lensing» because, like a lens that focuses light, the electron beam changes the trajectory of the protons flying through it.»

Jihua Chen and Tran characterized soft matter phases using transmission electron microscopy, placing a thin slice of material in the path of an electron beam to reveal structure through contrast differences in the lignin and rubber phases.

To address the issue of health risk from eating raw oysters, Texas A&M University graduate student Chandni Praveen, along with Texas A&M AgriLife Research scientist Dr. Suresh Pillai and a team of researchers from other agencies and institutions, studied how electron - beam pasteurization of raw oysters may reduce the possibility of food poisoning through virus.

To identify the location of each element with atomic precision, the researchers used a method in which the electron beam of one of the world's leading ultrahigh - resolution electron microscopes is finely focused, sent through the specimen and, by interactions with the specimen, loses part of its energy.

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.

Researchers produce such heating by aiming microwaves at the electrons gyrating around magnetic field lines — a process that increases the thermal energy of the electrons, transfers it to the ions through collisions, and supplements the heating of the ions by neutral beam injection.

An electron beam travels through a niobium cavity, a key component of a future LCLS - II X-ray laser, in this illustration.

The use of a scanning transmission electron microscope, which passes an electron beam through a bulk material, sets the approach apart from lithography techniques that only pattern or manipulate a material's surface.

The sample, consisting of a crystalline substrate covered by an amorphous layer of the same material, transformed as the electron beam passed through it.

As part of the research, scientists Jun Lou and colleagues at Los Alamos National Laboratory developed a technique that allowed them to peer through windows created by an electron beam in order to measure the catalytic activity of molybdenum disulfide — the 2 - D material that shows potential for being used in applications using electrocatalysis to separate hydrogen from water.