Instead Gianluca Sarri at Queen's university Belfast UK and colleagues used rapid laser bursts to make positrons in their smaller budget device.
They needed much stronger lasers and those lasers are expensive. Also they produced streams of positrons that were extremely broad
whereas our jet is a hundred times narrower and remains pencil-like as it propagates he adds.
the researchers developed a prototype device by using a laser to cut a hole in a silicone tube to add drugs. ight
and had avoided the side of the chamber where their hippocampal cells were activated by the laser now began to spend more time in that side
which would self-assemble from laser-cut materials when uniformly heated. The new work is similar
After the laser-cut materials are layered together a microprocessor and one or more small motors are attached to the top surface.
Zhu shone a laser through the material while tilting the pillars at various angles and found she could control how much light passed through based on the angle at which the pillars bent.
In this case the laser performs dual functions. We use two different light pulses: one to modify the material and one to measure the electrical conduction.
and other low-power applications are perhaps the most efficient compact and low-cost lasers available. Attempts have been made over the years to amplify the brightness of these valuable lasers for industrial applications such as welding and cutting metal.
But boosting power usually means decreasing beam quality or focus. And the beam never gets intense enough to melt metal.
The Terablade has comparable beam quality as compared with traditional manufacturing lasers such as carbon dioxide disk
and lowest cost of ownership as compared with these other lasers. Huang says Terablade represents a third generation of industrial lasers.
Then came diode-pumped solid-state (DPSS) lasers including disk and fiber that first transfer energy from diode lasers into a medium usually a crystal before converting it into a laser beam.
When fed through an output collimation lens this creates a ray of laser light. An individual diode laser in say a laser pointer can emit a beam in infrared
In the early 2000s Huang Chann and Lincoln Laboratory colleagues built a few prototype lasers based on WBC technology.
Today the WBC-based Terablade is a laser module that contains diode laser bars (long arrays of diode lasers) a transform lens a diffraction grating and an output lens.
a 3-foot cube that comes with multiple laser engines a control computer power supplies and an output head for welding
More broadly our vision is to revolutionize the laser industry Huang says by introducing powerful direct-diode lasers to various applications across the globe.
One idea is to build a laser that acts as a heat-seeking missile deterrent: It fires infrared laser light at the missile
The laser s compact design would allow it to be mounted on a fighter jet. With the Terablade technology Huang says The sky is the limit literally y
Lasers can also move energy between two points such as two satellites. But this requires an uninterrupted continuous path between the transmitter and the receiver
At the time he was working on various photonics projects lasers solar cells and optical fiber that all involved a phenomenon called resonant coupling.
and in autonomous vehicle control among other applications gauge depth by emitting short bursts of laser light
In a conventional lidar system the laser fires pulses of light toward a sequence of discrete positions
The laser will generally fire a large number of times at each grid position until it gets consistent enough measurements between the times at
So the MIT researchers system produces an initial provisional map of the scene based simply on the number of times the laser has to fire to get a photon back.
when exposed to laser light. In the past, researchers have exploited this phenomenon to create sensors by coating the nanotubes with molecules,
a former postdoc in MIT Laser Biomedical Research center (LBRC) and one of the lead authors of a paper describing the technology in the Oct 2 issue of the journal Scientific Reports.
and then cooled them down with more laser light to just above absolute zero. The charged atoms can then be trapped using voltages applied to nearby metallic surfaces.
The magnetic insulator Shi and his team used was yttrium iron garnet grown by laser molecular beam epitaxy in his lab. The researchers placed a single-layer graphene sheet on an atomically smooth layer of yttrium iron garnet.
Paras Prasad, Phd, executive director of UB's Institute for Lasers, Photonics and Biophotonics (ILPB; and Guanying Chen, Phd, a researcher at ILPB and Harbin Institute of technology in China.
whether the crystalline structure of the materials is mismatched-lowering the manufacturing cost for a wide variety of semiconductor devices such as solar cells lasers and LEDS.
For example in photonic devices like solar cells lasers and LEDS the junction is where photons are converted into electrons or vice versa.
This manufacturing cost is a major reason why semiconductor devices such as solar cells lasers and LEDS remain very expensive.
or lasers-all of which are extremely expensive. Other conventional techniques use mechanical probes which are also costly.
#Breakthrough in flexible electronics enabled by inorganic-based laser lift off Flexible electronics have been touted as the next generation in electronics in various areas ranging from consumer electronics to bio-integrated medical devices.
A research team headed by Professor Keon Jae Lee of the Department of Materials science and engineering at KAIST provides an easier methodology to realize high performance flexible electronics by using the Inorganic-based Laser Lift off (ILLO.
The ILLO process involves depositing a laser-reactive exfoliation layer on rigid substrates and then fabricating ultrathin inorganic electronic devices e g. high density crossbar memristive memory on top of the exfoliation layer.
as a result of the reaction between laser and exfoliation layer and then subsequently transferred onto any kind of receiver substrate such as plastic paper and even fabric.
Sufficient heat is generated then locally by the laser light raising the tumor temperature rapidly to above 43 degrees Celsius
so they can be detected by a photon laser light. The laser light heats the nanoparticles to at least 43 degrees Celsius to kill the cancer cells ultimately leaving all the other cells in the body unharmed.
The procedure can ultimately be carried out by the patient following training to direct a small laser light device to the affected area for a specified amount of time two to three times a day.
This method can ultimately improve the success rate as well as cut costs to the patient. This gives point
The team used a laser to excite the plasmonic resonance of specific particles produced in the reaction.
The incident laser light determines whether the light emitted by the particle travels left or right in the glass fibre.
When a particle that is coupled to the glass fibre is irradiated with a laser in such a way that it emits light of a particular sense of rotation,
#Nanotube cathode beats large pricey laser Scientists are a step closer to building an intense electron beam source without a laser.
Traditionally accelerator scientists use lasers to strike cathodes in order to eject electrons through photoemission. The electric and magnetic fields of the particle accelerator then organize the electrons into a beam.
The tested nanotube cathode requires no laser: it only needs the electric field already generated by an accelerator to siphon the electrons off a process dubbed field emission n
Novel applications of'quantum dots'including lasers biological markers qubits for quantum computing and photovoltaic devices arise from the unique optoelectronic properties of the QDS
With the help of a prism, the researchers shine laser light into the microsphere. The light is reflected repeatedly at the internal surface of the sphere until, ultimately,
"The researchers use a direct laser writing method called two-photon lithography to"write"a three-dimensional pattern in a polymer by allowing a laser beam to crosslink
The parts of the polymer that were exposed to the laser remain intact while the rest is dissolved away, revealing a three-dimensional scaffold.
Using a laser to excite electromagnetic waves called plasmons at the surface of the wire the researchers found that the Mos2 flake at the far end of the wire generated strong light emission.
#Tiny laser sensor heightens bomb detection sensitivity New technology under development at the University of California,
Because of this, the researchers are hopeful that their plasmon laser sensor could detect pentaerythritol tetranitrate, or PETN, an explosive compound considered a favorite of terrorists.
The new device builds upon earlier work in plasmon lasers by Zhang's lab that compensated for this light leakage by using reflectors to bounce the surface plasmons back and forth inside the sensor similar to the way sound waves are reflected across the room
"The optical sensor uses Raman spectroscopy, a technique pioneered in the 1930s that blossomed after the advent of lasers in the 1960s.
a two-coherent-laser technique called"coherent anti-Stokes Raman spectroscopy,"or CARS. By using CARS in conjunction with a light amplifier made of four tiny gold nanodiscs,
"The two-coherent-laser setup in SECARS is important because the second laser provides further amplification,
"Zhang said.""In a conventional single-laser setup, photons go through two steps of absorption and re-emission,
and the optical signatures are amplified usually around 100 million to 10 billion times. By adding a second laser that is coherent with the first one,
the SECARS technique employs a more complex multiphoton process.""Zhang said the additional amplification gives SECARS the potential to address most unknown samples.
They also are exploring using lasers to precisely shrink the plastic in specific patterns. Nam first had the idea for using Shrinky Dinks plastic to assemble nanomaterials after seeing a microfluidics device that used channels made of shrinking plastic.
and Mohanty used a 50 to 100 milliwatt laser and the same carbon nanoparticle, which absorbs the beam,
A significant advantage of the new method is that the near-infrared light absorption of the nanoparticle can be used to selectively amplify interaction of low power laser with targeted tissue
and"laser induced-damage to non-targeted cells along the irradiation path can be avoided, "the report says.
The sensors developed by the Cambridge team are made using laser light, which organises metal nanoparticles into alternating layers in thin gel films to produce the sensors in a matter of seconds.
The use of lasers means that the sensors can be manufactured easily at scale.""These sensors can be used to screen for diabetes in resource-poor countries,
and scientists are already using lasers to illuminate nanoscale samples during AFM scans. The problem with that approach says veteran NSMM researcher Pavel Kabos of the Advanced High-frequency Devices Program in PML's Electromagnetics Division is that the laser has to shine in from the side.
As a result you get cast shadows and significant uncertainty as to exactly what area is being illuminated.
And of course the laser and its mounting take up a great deal of space. With the new design the illumination will be applied directly over the probe tip at the same place on the sample that is being exposed to the microwave signal.
"By using nanostructures, lasers and this unique twisting property of light, we could selectively destroy the unwanted form of the molecule,
"Such a laser patternable highly nonlinear thin film, about one hundredth of a human hair, has not been achieved by any other material,
Using a laser as a pen they created microstructures on the graphene oxide film to tune the nonlinearity of the material."
on which everything can be fabricated with laser and then it is automatically integratable.""Current manufacturing methods in semiconductor labs require expensive cleanrooms to fabricate photonic chips.
The fabrication and laser writing of this photonic material is simple and low cost.""Using this new method,
and the Colorado School Of mines it uses a laser vibrometer and a sonic beam to identify how the bomb's casing vibrates.
Mix it w/laser tag in a pre-built arena. Paint the environment however you want it to look to match the geometry of the playing field in reality.
if implemented with something like Virtusphere (virtusphere. com) being part of one of those laser-tag/game centers plus it would require a lot less floor space than laser tag
The heavy lifting of the Zebedee is done in software as all that conflicting laser data is converted to a 3-D map.
And this you might want to look at just for the eye candy of a second generation Skylon using laser heated hydrogen to get into orbit. http://nextbigfuture. com/2013/09/propulsion-lasers-for-large-scale. html One error in this article
and etched by laser it would be cheap to produce. The device is also scalable:
#Using Lasers To Save Earth's Cultural Monuments History is unwritten by the destruction of great artifacts.
Preserving modern wonders for posterity is the main inititiative of Cyark a nonprofit that uses 3-D laser scanning to create a digital archive of the world s cultural heritage sites.
which is like radar except instead of bouncing back radio waves it uses lasers. LIDAR systems existed before Cyark
and lasers to provide detailed travel maps capturing the curve of the road and details down to a centimeter accuracy.
and laser motion sensors could be sold alongside build-it-yourself weather monitoring kits and robot birds.
#Lasers Reveal Underground'Super Henge'Near the prehistoric Stonehenge monument archeologists have found the#buried traces of a super henge more than 4900 feet in circumference.
They beamed radar and lasers into the ground and wheeled scanners over a vast area to study subtle changes in the Earth's magnetic field.#
The video for our upcoming IROS 2013 paper illustrates this algorithm using robots equipped with laser turrets.
We opted instead for constructing the chassis out of laser-cut acetal plastic a higher-powered flight motor and a new propeller.
says Valerio Pruneri, a laser physicist at the Institute of Photonic Sciences in Barcelona, Spain,
When zapped with an intense pulse of laser light GST film changes its atomic structure from an ordered crystalline lattice to an morphousjumble.
or amorphous order CD or DVD drive shines low-intensity laser light on a disk and tracks the way the light bounces off.
A superfluid with loopsthe team first used a combination of laser cooling and evaporative cooling methods, originally co-developed by Ketterle, to cool atoms of rubidium to nanokelvin temperatures.
the researchers used a set of lasers to create a crystalline array of atoms, or optical lattice.
and a half to optimize the lasers and electronic controls to avoid any extraneous pushing of the atoms,
Germanium lasers, demonstrated by Kimerling group in 2010, offer a prime example. ne of the big issues today is the light source,
Our germanium laser would be a way to do that. It's at the research rather than the commercial stage at this point,
IT has been granted patents both on the laser and on a method to integrate similar devices into an optical circuit,
Overall, the MIT patent portfolio in silicon photonics has grown to more than 60 patents that cover functions such as on-chip lasers, modulators and demodulators, and sensors.
#Tiny terahertz accelerator could rival huge free-electron lasers Physicists in the US, Germany and Canada have built a miniature particle accelerator that uses terahertz radiation instead of radio waves to create pulses of high-energy electrons.
Potential applications include free-electron lasers, whereby the electrons are used to create coherent pulses of X-rays.
In this latest work Emilio Nanni and colleagues at the Massachusetts institute of technology (MIT), the Center For free-Electron Laser Science (CFEL) at DESY in Germany and the University of Toronto have created a terahertz accelerator module with the aim
The researchers now plan to focus on developing a free-electron laser (FEL) based on terahertz technology,
but this would be"a low-cost system that can be integrated into laboratories with modest lasers"says Nanni.
#Lasers burn holes in quantum security systems A new way to hack quantum-cryptography systems has been unveiled by physicists in Canada.
The group also used the same laser to weaken the security of"quantum coin tossing,
arguing that testing against laser damage and other optical attacks will become"an obligatory part of security assurance for future quantum communications".
might also be vulnerable to laser damage. Better detectors Norbert Lütkenhaus of the University of Waterloo, who was involved not in the current work,
A superfluid with loops The team first used a combination of laser cooling and evaporative cooling methods,
the researchers used a set of lasers to create a crystalline array of atoms, or optical lattice.
and a half to optimize the lasers and electronic controls to avoid any extraneous pushing of the atoms,
This research outcome potentially allows for great flexibility in the design and optimization of electronic and optoelectronic devices like solar panels and telecommunication lasers.
Semiconductor lasers typically emit into elliptical beams that are really hard to work with and the new metasurface optical components could replace expensive optical systems used to circularize the beams.
a Yale postdoctoral researcher in applied physics. xamples include more sensitive biological and chemical sensors, lasers with higher output power,
In wakefield approaches, balancing the skittish plasma bubble requires terawatt or petawatt lasers, tricky micromachinging,
and femtosecond laser timing. In Nature Communications, researchers describe an alternative: a compact device that uses pulses of terahertz (THZ) radiation.
and the Deutsches Electronen Synchrotron (DESY, the German Electron Syncrotron), the Center For free-Electron Laser Science (CFEL), the Max Planck Institute for Structure and Dynamics,
the frequency is high enough that the plasma breakdown threshold for surface electric fields increases The terahertz approach also allows them to use readily available picoseconds lasers.
Intel Realsense, like Microsoft more famous Kinect cameras, work by projecting a signal (a laser
By shining a focused laser on the cells, they can selectively open these channels, either activating or silencing the target neurons.
because the laser is mounted hard to the spacecraft body, and the orientation of the Cubesat controls the direction of the beam.
The Cubesat will evaluate the ability to point a small satellite accurately as it demonstrates data transfer by laser at rates of up to 200 mb per second--a factor of 100 increase over current high-end Cubesat communications systems.
a more precise method than laser sintering and one used by NASA for various experiments.
Using direct metal laser sintering technology, the laser beam fuses the titanium powder into a solid form.
or DLP 3d printing, is either a UV laser or projector, respectively. However, in order to make full use of the smartphone exising features,
the OLO simply replaces expensive lasers and projectors with the phone own LED display. When you place your smartphone underneath the glass surface of the resin container,
and they are made by using a laser to melt blown powder metal, which is deposited then layer by layer to manufacture a 3d printed object.
According to the current roadmap, B-PET will launch a recycled PET-based powder for laser sintering processes in 2015
Using a laser measurement system the team was able to show the varying shapes from pre-to post-inflation with a Grasshopper plug-in. Once the printed material was cured
which includes a photovoltaic cell using a high-quality semiconductor crystal similar to the ones for lasers
if you loved playing with lasers and optics and applying them to biological questions. Zipfel still has the world first two-photon microscope in a case near his office,
who built the femtosecond laser needed to make two-photon microscopy work. Solving the mystery of how circuits in the brain produce behavior,
and reported by Laser Focus World magazine. Colors seen from flowers in nature and chemical materials are caused by wavelength selective light absorption in organic molecules.
and laser scanning microscopes, X-ray microscopes, electron and ion microscopes and spectrometer modules. Users are supported for software for system control, image capture and editing.
and Applied materials. ee also leveraging all the knowledge in lasers and optics for this specific Raman-based method. hebi calls Optokey product a iochemical nose,
in which laser light is irradiated on a ultra-thin metal point. This creates highly bundled light a hundred times smaller than the wavelength of light,
By observing the back-scattered portion of the laser light one can achieve a spatial resolution in the order of the near-field magnitude, that is, in the nanometer range.
The sample can be stimulated with laser, pressure, electric field or magnetic field pulses. The principle was tested at the HZDR on a typical laboratory laser as well as on the free-electron laser FELBE.
First tests on the new terahertz source TELBE which provides extremely short electric and magnetic field pulses for excitation,
Furthermore, the microscope modular aspect allows several radiation sources such as non-coherent monochromatic or polychromatic sources and tunable lasers,
the shortest wavelength laser in widespread use is the excimer laser around 193 nm. This means that in 55 years
the wavelength of widely accessible lasers has been reduced by less than a factor of 4. The University of Colorado work employs coherent,
or laser-like, beams of EUV light with wavelength at 30 nm nearly an order of magnitude shorter that the excimer, achieving very high-contrast images with a resolution of 40 nm laterally
The team deep-ultraviolet and EUV laser-like source technology could be used for defect detection or other nanometrology applications either as a stand-alone solution or as an inline tool.
This technology uses a special laser that penetrates through the skin and superficial veins and can heat the natural melanin nanoparticles in melanoma circulating tumor cells (CTCS).
He also has developed technology using lasers to destroy the CTCS as they are identified with the photoacoustic methods.
Zharov said. any years ago we discovered that laser-induced high local temperature can evaporate liquid surrounding light-absorbing nanoparticles
His team will use new high-pulse-rate lasers, which are focused small tiny ultrasound transducers that convert physical qualities into an electrical signal.
These lasers will be combined with an ultrafast signal acquisition algorithm to increase the sensitivity and minimize errors in perception due to motion that may be induced by patient hand movements.
laser and nanotechnological methods to increase diagnostic and therapeutic efficiency. The researchers also discovered that many standard medical procedures especially vigorous manipulation of the tumor,
Zharov team has demonstrated already that laser-induced nanobubbles significantly decrease the level of CTCS, leading to a decrease in the chances of cancer spreading to other organs. urther study could determine
SIM uses a laser-generated field of horizontal lines to project an interference pattern onto a sample.
One, called structured illumination microscopy (SIM), makes laser-based interference patterns that change based on what they interact with,
The laser takes a series of rapid"snapshots"of molecules as they interact and change structure over time.
which integrats the ultrafast laser with molecular biology and cell biology. Professor Lu has applied the tool to understand the molecular mechanisms that cause cancer at the very moment
including radar, a laser and cameras, to make turns and negotiate its way around pedestrians and other vehicles.
A combination of radar, lasers and cameras sitting on top of the roof give the car a 360-degree'view,
when lasers were fired into their Emdrive chamber, some of them travelled aster than the speed of light suggesting it could power a craft at the same velocity.
friendly looking prototype-his young son thinks it looks like a koala because of the nose-like black laser on the front-is a good bridge between the company's current test fleet of 20 specially outfitted Lexus SUVS
The prototype cars-assembled in suburban Detroit by Roush Industries-have the same array of radars, lasers and cameras as Google's fleet of Lexus SUVS,
the scientists warmed the skin of patients with a laser to measure how much pain they could withstand.
#Using optical fiber to generate a two-micron laser In recent years, two-micron lasers (0. 002 millimetre) have been of growing interest among researchers.
In the areas of surgery and molecule detection, for example, they offer significant advantages compared to traditional, shorter-wavelength lasers.
However, two-micron lasers are still in their infancy and not yet as mature as their telecom counterparts (1. 55-micron).
Moreover sources currently used in labs are typically bulky and expensive. Optical fibre-based 2 micron lasers are an elegant solution to these issues.
This is where researchers at Photonics Systems Laboratory (PHOSL) come in. In an article published in Light:
Science & Applications, the team of Camille Brès at EPFL described a way to design these lasers at a lower cost,
not only to produce very good 2 micron lasers, but also to do without an expensive and complex component that is normally required.
At these wavelengths, the laser light is absorbed easily by water molecules, which are the main constituents of human tissue.
What is more, the energy from the laser causes the blood to coagulate on the wound, which prevents bleeding.
Two-micron lasers are also very useful for detecting key meteorological data over long distances through the air.
until becoming a laser. For optimal operation, these systems include a costly component called isolator,
Higher quality laser The new system not only proved to be less expensive than more traditional ones,
it also showed it could generate a higher quality laser light. The explanation is as follows: the laser output gets purified
because light interacts with itself in a very special way, thanks to the amplifying fibre's composition and dimensions,
and the high power circulating in this atypical laser architecture.""While the association of amplifying fibres
and high power usually weakens traditional lasers performance, it actually improves the quality of this laser,
thanks to our specific architecture",said Svyatoslav Kharitonov o
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