Sentences with phrase «focused laser beam»

Arne Voie, David Burns and Francis Spelman focused a laser beam into a thin sheet to illuminate a fluorescent sample and captured the reflected light using a different objective lens oriented perpendicular to the plane of illumination (i.e. light sheet).

In NTA, particles in suspension are illuminated with a focused laser beam and light scattered from each particle is visible through magnifying optics fitted to a digital camera.

Direct laser writing means that a computer - controlled, focused laser beam generates the structure in a photoresist similar to a pen.

To do this, the experts guide a focused laser beam over the surface of the unprocessed sheet.

The intense electric field at the center of a focused laser beam polarizes the particle, just as it would polarize an atom.

One way would have been to use an inflow of gaseous fluoride to coat the surface of the KMgF3 thin film, but instead the team discovered a safer route to fabricating it with pulsed laser deposition — a way of layering thin films of chemicals onto surfaces through irradiation with a focused laser beam.

They then dragged each bead across a cell using optical tweezers, a technique that employs a highly focused laser beam to physically move microscopic objects.

The results from the quantum - optics labs at the TU Vienna could give a new twist to research concerned with longitudinally oscillating light waves in very different scientific fields: Even a focused laser beam in free space has a longitudinal component.

It uses the pressure of a highly focused laser beam to levitate and manipulate delicate microscopic objects such as viruses, bacteria and DNA strands without causing them damage.

In order to demonstrate such capabilities, the authors designed and fabricated assemblies of gold nanorods with well - defined dimensions and orientations such that their overall size matches the size of a focused laser beam, i.e., about 1 micron.

Data is recorded on the discs while they are in a magnetic field by focusing a laser beam on to the film.

This means Tsen does not have to focus the laser beam as tightly and can kill more virus particles in less time without damaging the healthy cells around the damaged tissue.

In 1968 Vladilen S. Letokhov first proposed that atoms could be trapped in a light beam using the dipole force, and 10 years later Arthur Ashkin of AT&T Bell Laboratories suggested a more practical trap based on focused laser beams.

Not exact matches

If re-elected, «I will be on the same subcommittee and we will focus on this [rule] like a laser beam,» Roe continued.

A compact broadband ion beam focusing device based on laser - driven megagauss thermoelectric magnetic fields

NIF's goal is to focus the intense energy of 192 giant laser beams on a BB - sized target filled with hydrogen fuel, fusing the hydrogen atoms» nuclei and releasing many times more energy than it took to initiate the fusion reaction.

Micro-Shaping, Polishing, and Damage Repair of Fused Silica Surfaces Using Focused Infrared Laser Beams

They want to know exactly how to focus their petitions — as though they're concerned about where to aim the laser beam.

In each case the fine focusing of the laser beam is very accurate so that the protective properties of the container are not compromised.

this is simply a show of overconfidence, if arsenal must win anything this season the manager ant the entire crew must have a laser beam focus and no that nothing gained until something is actually gained.

IDC spokeswoman Candice Giove said in a statement, «As we enter the campaign season the Independent Democratic Conference will continue to work to elect Democrats who will fight against the draconian policies coming out of Washington and have a laser beam focus on protecting labor and our middle class.»

Now it's our turn to support a progressive African American, i.e. current comptroller William Thompson — a friend and admirer of Adolfo — in his bid for Gracie Mansion... But the message the reader takes away from the Times» City Room post is that the Bronx BP is focused like a laser beam on being mayor.

His mantra against Obamacare focuses on the mandate, like a laser beam.

Cuomo told the audience he's been focusing on the upstate economy «like a laser beam».

Senate President Donald Williams, the highest - ranking senator, said his 22 - member Democratic caucus is focused like a laser beam on trying to kick - start the still - sluggish economy and reduce the state's unemployment rate.

I am focused like a laser beam on their interests,» he said.

Once the laser builders summon the power, another challenge will loom: bringing the beams to a singularly tight focus.

In the 1970s, researchers at Lawrence Livermore National Laboratory (LLNL) in California focused on the former, boosting laser energy by routing beams through additional lasing crystals made of glass doped with neodymium.

One way to break the vacuum would be to simply focus a single laser beam onto an empty spot inside a vacuum chamber.

«When we focus about one hundred laser beams through this cloud, each of them acts like a trap.

A group of scientists from the Lebedev Physical Institute of the Russian Academy of Sciences, Moscow Institute of Physics and Technology and Moscow State University recently presented their research into the process of laser pulse filamentation — the effect produced when a laser beam propagating in air focuses into a filament.

He's done so by precisely focusing infrared laser light to selectively ionize, or steal the electrons from, air molecules at the beam's focal point, generating a flash of bluish - white plasma.

Smith's team focused 176 laser beams on hair - thin layers of gold and artificial diamond to induce waves of pressure.

The laser beams focus on the tiny gold cylinder, which contains a target the size of a BB.

Developed by the US Department of Defense's Missile Defense Agency (MDA), the ABL aims to focus a beam of laser energy in the megawatt range for several seconds onto a missile at a...

The researchers focused the smaller laser beams through the cloud of ultracold atoms and found that each beam's focus — the point at which the beam's intensity was highest — attracted a single atom, essentially picking it out from the cloud and holding it in place.

The material is exposed and hardened at the focus point of the laser beam.

What they call «optical molasses» slows atoms to a crawl by focusing three pairs of laser beams on a small volume of space that also contains a magnetic field.

A beam tightly focused by a telescope could greatly outshine a planet's host star at a particular wavelength, Townes realized, popping out as clearly as a red laser pointer aimed at someone from across a stadium flooded with white lights.

But supercontinuum lasers give off a focused beam packed with light from a much broader range of wavelengths.

Conventional rockets would carry the miniature probes into Earth orbit, and a synchronized array of ground - based lasers would then focus its beams on individual sails, imparting enough force to accelerate each probe to 20 percent of the speed of light.

Power stations would need to be placed along the path in order to pump laser energy into the beam and to focus it — a minor task for a Type III civilization.

Until recently, it was not possible to measure the exact distribution of the wave troughs and peaks at the focus of a laser beam on this time scale.

Noting the progress the world has made in other areas, like toward the eradication of polio, she said, «You can really focus like a laser beam on a particular problem.

DARPA is looking at more efficient technologies, like fiber lasers and liquid lasers, which could lead to smaller, more compact devices, while the Navy is researching a Free Electron Laser, an experimental technology that uses high - speed electrons to generate an extremely powerful focused beam of radiation.

At present, lenses and mirrors can not focus light into a beam much smaller than the light's wavelength — 500 nanometres for blue - green lasers.

«We have focused a very energetic laser beam on a tiny iron target — a little thinner than a human hair,» explains Alessandra Ravasio, who led the experiment.

Laser - powered fusion, sometimes called inertial confinement fusion, is produced by focusing an array of powerful laser beams on a small pellet of hydrogen Laser - powered fusion, sometimes called inertial confinement fusion, is produced by focusing an array of powerful laser beams on a small pellet of hydrogen laser beams on a small pellet of hydrogen fuel.

The laser is focused through a lens with imperfections, such that the resulting beam has pockets of darkness that can act as a trap.

However, the wavelength of the beam from the infrared lasers used in CD players and existing laser disc recorders is too long to be focused precisely enough to read such tiny pits.