#Researchers developed hydrophobic metals using laser Engineers have spent decades studying super-hydrophobic surfaces because of the plethora of real-life applications.
or waterproof when they are treated with lasers. Researchers have found that repetitive laser blasts on the metal surface develop specific patterns that repel water efficiently.
A closer look at the surface reflects micro and nanoscale structures which causes water to bead effectively. he material is so strongly water-repellent the water actually gets bounced off.
These laser treated surfaces are highly absorbent of heat and light as well. Researchers say that this could be useful in the creation of rust-free solar panels that capture the sun energy
it should be possible to manufacture therapeutic drugs that could be activated with light, says co-principal investigator Michael R. Bruchas, associate professor of anesthesiology and neurobiology at Washington University in St louis. ith one of these tiny devices implanted,
and activate that drug with light as needed. This approach potentially could deliver therapies that are targeted much more
By activating brain cells with drugs and with light, the scientists are getting an unprecedented look at the inner workings of the brain.
If we want to influence an animal behavior with light or with a particular drug, we can simply point the remote at the animal
In other mice, shining a light directly onto brain cells expressing a light-sensitive protein prompted the release of dopamine,
and exposed it to ultraviolet light, which is found in the sun rays and breaks down many materials.
who uses lasers to study the speed of protein reconfiguration before aggregation.""In the lab,
#How lasers make metal super water repellent Scientists have used lasers to turn metals into extremely water repellent materials without the need for temporary coatings.
both of the University of Rochester Institute of Optics, describe a powerful and precise laser-patterning technique that creates an intricate pattern of micro
This work builds on earlier research by the team in which they used a similar laser-patterning technique that turned metals black.
Guo adds that one of the big advantages of his team process is that he structures created by our laser on the metals are intrinsically part of the material surface.
Unlike Guo laser-treated metals, the Teflon kitchen tools are not super-hydrophobic. The difference is that to make water to roll off a Teflon coated material,
but ultra-short laser pulses to change the surface of the metals. A femtosecond laser pulse lasts on the order of a quadrillionth of a second
but reaches a peak power equivalent to that of the entire power grid of North america during its short burst.
therefore make them very efficient at absorbing light. The combination of light-absorbing properties with making metals water repellent could lead to more efficient solar absorbersolar absorbers that don rust
and do need not much cleaning. Guo team had blasted previously materials with the lasers and turned them hydrophilic,
meaning they attract water. In fact, the materials were so hydrophilic that putting them in contact with a drop of water made water run phill.
Guo team is now planning on focusing on increasing the speed of patterning the surfaces with the laser,
particularly in light of the huge disease burden of malaria,"explained senior author Manoj Duraisingh, Ph d.,professor of Immunology and Infectious diseases at the T. H. Chan School of Public health."
#PCR Makes the Jump to Light speed The amplification of minute amounts of genetic material is the cornerstone of every molecular biology laboratory
Now, bioengineers at the University of California, Berkeley have developed new technology they believe will dramatically increase heating and cooling speeds with the switch of a light."
"The findings from this study were released today in Light: Science & Application through an article entitled ltrafast photonic PCR.
When exposed to light, the free electrons get excited and begin to oscillate, generating heat.
Once the light is off, the oscillations and the heating stop. As it turns out,
since it is extremely efficient at absorbing light. In their study, the investigators used thin films of gold
Additionally, the Berkeley scientists used LED LIGHTS with a peak wavelength around 450 nm for most efficient light-to-heat conversion.
The light was able to heat electrons at the interface of the gold films and DNA solution ramping temperatures up staggeringly fast at approximately 13°C per second.
Savin tells us, other devices like screens and photodetectors. The results appear in this week's edition of the journal Nature Technology.
#New process prints electroluminescent layers directly onto three-dimensional objects Electroluminescent (EL) panels are found in many electronics applications, particularly as backlighting for LCD displays, keypads, watches,
Rainer Kling, associate professor at the Light Technology Institute of KIT. Electroluminescent panels are a very popular way to backlight a screen,
particularly as they provide an even glow across their entire face, use very little power,
Essentially the equivalent of a capacitor when used in an AC (Alternating current) circuit, EL panels encase their light-emitting material between two electrodes.
and copper structures The method developed at the University of Twente in The netherlands involves microscopic drops created from a thin metal film that is melted by a pulsed laser.
The process is distinct from micro laser sintering or direct metal laser sintering, both of which use a laser in combination with metal powders to create new structures.
The key to this breakthrough in printing metals seems to be using a higher energy laser than in previous attempts.
This allows for the creation of so-called"fast droplets"that quickly deform into flattened disks
when they impact the substrate. Earlier experiments used lower energy lasers, creating drops of metal that maintained a more spherical shape
and led to the creation of a stack that was less stable. The method still requires some refinement as the high-energy laser currently causes droplets to also land next to the desired placement location.
The team plans to look into this effect to improve printing capability not just in metals
#3d printing breakthrough creates tiny metal structures The method developed at the University of Twente in The netherlands involves microscopic drops created from a thin metal film that is melted by a pulsed laser.
The process is distinct from micro laser sintering or direct metal laser sintering, both of which use a laser in combination with metal powders to create new structures.
The key to this breakthrough in printing metals seems to be using a higher energy laser than in previous attempts.
This allows for the creation of so-called"fast droplets"that quickly deform into flattened disks
when they impact the substrate. Earlier experiments used lower energy lasers, creating drops of metal that maintained a more spherical shape
and led to the creation of a stack that was less stable. The method still requires some refinement as the high-energy laser currently causes droplets to also land next to the desired placement location.
The team plans to look into this effect to improve printing capability not just in metals
Passing current through the filaments caused them to heat up to over 2, 500°C (4, 500°F) and produce an exceptionally bright light."
"This new type of'broadband'light emitter can be integrated into chips and will pave the way towards the realization of atomically thin, flexible,
and an exceptionally intense light is produced. Measuring the spectrum of light emitted from the new device,
the researchers also discovered that it peaked at wavelengths not expected to be seen. This was a result of interference between the light being generated directly by the glowing filaments
and light bouncing off the silicon substrate and back through the graphene filaments themselves.""This (phenomenon) is only possible
because graphene is transparent, unlike any conventional filament, and allows us to tune the emission spectrum by changing the distance to the substrate."
"A graphene lattice is also a particularly efficient way to produce light, due to its inherent ability to maintain excitation levels that allow the freer flow of electrons.
That is, just as graphene is able to rapidly emit electrons when excited by lasers as the electrons remain at an elevated state,
it also provides a similar capability for efficient photon release in an electrically-heated situation."
so that less energy is needed to attain temperatures needed for visible light emission, "said Myung-Ho Bae, a senior researcher at KRISS."
the new device also opens up many possibilities of alternative light generation at the microscale,
particularly for on-chip generation for use in photonics devices. As such, the researchers are currently working on ways to improve the performance of these incandescent devices in finding out how quickly they might be toggled on and off
The short video below is an animation showing how the graphene filaments generate Light source: Columbia Universit U
researchers at Missouri University of Science and Technology have developed a technique to print images that uses the manipulation of light, rather than the application of ink,
the researchers created holes with different diameters (ranging in size from 45 to 75 nanometers) corresponding to the desired absorption of light at various wavelengths.
As such, light shining onto the logo at specific frequencies allowed researchers to create different colors with reflected light instead of ink.
and also to manipulate the light to produce four new colors to make an orange ampersand,
or metal-air interface) and create an optical magnetic dipole resonance which results in near-perfect light absorption and negligible reflection in the material.
and can be activated by exposure to light, claiming it could offer safer means of repairing wounded tissue.
As the gel is exposed to light, its molecules bind together to create a mechanical stability,
Surface plasmon resonance (SPR) is a process where a stream of light is directed onto a metallic film, with most,
Some of the light is absorbed by electrons on the film's surface which causes them to jostle.
it affects how the light is absorbed and reflected, allowing scientists to deduce critical information about the composition of the sample,
namely a light detector and light source. The scientists fixed a 400 micrometer fiber optic cable curved into a U-shape across the phone's camera and LED light.
The camera was fitted with a diffraction grating to separate the light beam into an emission spectrum and a small well to store fluid samples was added.
While there's a healthy selection of compact solar panels to keep our mobile gadgets charged up light permitting the vast majority of these are either too small to be effective or too bulky for carting around.
but they throw a lot of light.""Ford revealed the Mode: Link app with the original two Mode e-bikes back in March
The team also used extreme ultraviolet lithography, or EUVL, for etching. Current chips are etched using an argon fluoride laser,
which has a beam that is 193 nm wide. EUV beams are only 13.5 nm wide,
#Quantum dots and perovskite combined to create new hyper-efficient light-emitting crystal Two optoelectronic materials getting a lot of press these days are perovskite and quantum dots.
whose light production depends on the perovskite matrix's ability to guide electrons into the quantum dots, which then super-efficiently convert electricity to light.
This, then, leverages the superior photocarrier diffusion of the perovskite to produce bright light emission. Producing light at the near-infrared,
and cellular-scale inorganic light-emitting diode(-ILED) arrays, allowing it to shine light on targeted cells.
If we want to influence an animal behavior with light or with a particular drug, we can simply point the remote at the animal and press a button."
#Laser device may soon non-invasively monitor diabetics'glucose levels In order to monitor their blood glucose levels, diabetics typically have to perform painful and inconvenient finger-prick blood tests in some cases, several times a day.
however, in the form of a device that simply shines a laser on the user's finger.
A low-powered laser beam is projected then through that window, and into their finger. Some of that light is absorbed by glucose in the bloodstream,
and some is reflected back down onto the window. Ions on the window glass surface subsequently fluorescence in infrared
when exposed to that reflected light the more light that hits them, the longer they glow. By measuring the duration of that fluorescence,
a processor in the device is able to determine how much of the original laser light was absorbed by glucose,
The car's camera system is also able to directly spotlight hazards with two special LED lamps positioned next to the fog lights.
while Audi and BMW have been testing laser headlamps that are significantly brighter than traditional xenon or LED options.
These are created by exposure to visible light a process that boosts both their strength and stickiness.
and exposed them to blue visible light, the photochemical reaction saw them instantly pair up to form these tyrosine intersections.
the patient will perceive patterns of light, which they can learn to interpret, thus regaining some degree of sight.
a foam is made by bubbling a gas through molten metal to form a light froth that cools into a lightweight matrix.
Unfortunately, these methods tend to impede the passage of visible light, some by tinting panes and others by complete obscuration.
Two years ago, Delia Milliron and her team produced a"smart"glass coating that could block visible light, near-infrared light (NIR), or both.
The team's advancements on their previous research have led to the creation of electrochromic materials that can selectively permit the passage of light,
These new materials allows control of up to 90 percent of NIR and 80 percent of visible light.
This design provides channels for electronic and ionic change, thereby enabling selective blocking of light and/or NIR through different applied voltages.
and Korea Research Institute of Standards and Science (KRISS) that have demonstrated for the first time ever an on-chip visible light source using graphene, an atomically thin and perfectly crystalline form of carbon,
The study, right visible light emission from graphene is published in the Advance Online Publication on Nature Nanotechnology website on June 15. ee created
Creating light in small structures on the surface of a chip is crucial for developing fully integrated hotoniccircuits that do with light
but have not yet been able to put the oldest and simplest artificial light sourcehe incandescent light bulbnto a chip.
By measuring the spectrum of the light emitted from the graphene, the team was able to show that the graphene was reaching temperatures of above 2500 degrees Celsius,
hot enough to glow brightly. he visible light from atomically thin graphene is so intense that it is visible even to the naked eye,
Interestingly, the spectrum of the emitted light showed peaks at specific wavelengths, which the team discovered was due to interference between the light emitted directly from the graphene
and light reflecting off the silicon substrate and passing back through the graphene. Kim notes, his is only possible
because graphene is transparent, unlike any conventional filament, and allows us to tune the emission spectrum by changing the distance to the substrate.
so that less energy is needed to attain temperatures needed for visible light emission, Myung-Ho Bae, a senior researcher at KRISS and co-lead author,
when he invented the incandescent light bulb: dison originally used carbon as a filament for his light bulb and here we are going back to the same element,
or other microorganisms that respond to light, or creates molecules to do so, and put them into nerve cells to transform them
by inserting the right molecules and shining light at them. The light wakes up the right proteins, allowing messages to flow through and then bringing out the same behaviour in cells around them n
including a laser scanner, several video cameras and ultrasonic and radar sensors. All of that data is fed into he central driver assistance control unit (zfas), a compact central computer
which is invisible to the naked eye that you need to put an ultraviolet light on,
*Carbon fibre bicycle frames are popular with cyclists as they are so light, but they are also liable to crack.
The light is projected through each well and collected by 96 plastic optical fibers. A custom-designed smartphone app then reads the resulting images
#Photonics Moves Forward for Future Computing Technology The development of photonic technologies to speed up computing has taken two steps forward,
following recent announcements demonstrating the use of photonics in both processing and data transfer. Optalysys, a start-up company based in Cambridge England,
IBM has announced that it has produced an integrated wavelength multiplexed silicon photonics chip, which will allow the bulk manufacturing of 100 Gbps optical transceivers.
Optical processing and silicon photonics are also longer term technologies, but research is overcoming the barriers to their practical implementation,
BM current interests are more in the silicon photonics technology than in optical processing. The company engineers have designed
and tested a fully integrated wavelength multiplexed silicon photonics chip, which will soon enable manufacturing of 100 Gbps optical transceivers.
IBM silicon photonics chips uses four distinct colours of light travelling within an optical fibre to transmit data in and around a computing system.
thus permits mass production and hence lower prices that will ensure more widespread commercial use of silicon photonics.
Most of the optical interconnect solutions employed within datacenters as of today are based upon vertical cavity surface emitting laser (VCSEL) technology,
IBM CMOS integrated nanophotonics technology combines the essential parts of an optical transceiver, both electrical and optical, on one silicon chip.
#Hologram, to which can touched Holograms are becoming more and more commonplace phenomenon, finding use in various industries.
A idea of`interaction with the hologram is not subject to only to science fiction stories. The Japanese presented the world another sensation.
Possibility to work with such displays provide lasers, that transmit airborne gases enough energy to heat the electrons
To achieve this effect allowed the femtosecond laser pulse initiate simultaneous reaction of 200,000 points in three dimensions at once.
Scientists have formed a hologram in the form of hearts, stars and little fairies. The visible image is a three-dimensional representation of two-dimensional data.
But tangible hologram can be used in the holographic interfaces. e
#Over 100 banks hit by sophisticated cyberattack: report The Japan Times WASHINGTON A sophisticated global cyberattack struck more than 100 banks in 30 countries stealing hundreds of millions of dollars The New york times reported Saturday.
A tiny microscope enlarges the contents of a few drops of semen inside a pipette, lit by a backlight.
The light beams the moving image to the ipad camera, and algorithms then analyze the sample for total sperm count and motility,
The state of skin is analyzed by applying LED LIGHTS with different wavelengths (such as visible light which is reflected on skin surface,
and near-infrared light, which comes back after passing through the inside of the skin) to skin
and measuring reflected lights with the CMOS sensor. Based on multiple image data that indicate the states of the surface and inside of the skin,
100,000 tiny holes drilled by lasers perforate its surface. He adds: fuel cell is like a battery, in a sense;
When the householder turns on a light, explains Rogers, the energy-making process will be activated immediately in the fuel cell stack.
#'Nanostar'particles Make Cancer cells Light up Finding cancer cells might one day involve shining a laser onto a certain region of the body
When a laser hits one of the nanostars most of the light scatters with the same amount of energy.
because they give up some to the chemical bonds in the dye that coats the gold stars changing the way the dye looks under the laser light. 10 Technologies That Will Transform Your Life Ordinarily it would be difficult to see the change in the light
and used an infrared laser to scan each mouse. The researchers found that the nanoparticles caused bright spots where cancer cells
Kircher said seeing the precancerous cells light up under the laser was a bit of a surprise
and it's application said Andrey Kuzmin professor of physics at the Institute for Lasers Photonics
and Biophotonics at the State university of New york at Buffalo who was involved not in the research.
which lasers harden layers of liquid plastic, or resin, into three-dimensional shapes. This technique sets OWL's printers apart from other 3d printers on the market, such as Makerbot's Replicator or the Ultimaker 2, that use a process known as fused deposition modeling (FDM), not SLA.
#Four Tech Breakthroughs at the Cutting edge of Light During these dark winter months, spare a thought for artificial lights.
From strings of lights adding holiday cheer to artificial sunlamps alleviating seasonal affective disorder, they brighten our days.
The United nations designated 2015 as the International Year of Light and Light-Based Technologies to raise awareness of how photonic technologies offer solutions to international challenges.
Light technology is now an active area of research in energy, health and agriculture. First lighting the way In the late 1800s
long-lasting light source that significantly changed our work, play and sleep habits. The ability to control light in new ways transformed how we experience
and see the world. Light-based technologies such as optical fiber networks allow us to connect rapidly with people worldwide over the internet.
which received Lux Awards 2014 Light source Innovation of the Year, can fill a room ceiling mimicking sunlight from different latitudes, from the equator to Northern europe.
The key to its success in replicating a sunny sky uses nanostructured materials to scatter light from LEDS in the same way tiny particles scatter sunlight in the atmosphere so-called Rayleigh scattering.
the missing color for producing white light was blue. Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura cracked the blue conundrum in the early 1990s.
Now, thanks to their work, white light LEDS are ubiquitous. In recognition of this energy saving invention, they received the Nobel prize in Physics last year.
Light was recognized also in the Nobel prize category of Chemistry last year for light-based microscopy tools that use a few tricks to sense the presence of a single molecule.
Microscopy had been limited by diffraction, where two adjacent objects can only be resolved if they are separated by more than half the wavelength of light used for imaging.
But Nobel laureates Eric Betzig Stefan Hell and W. E. Moerner all took different approaches using similar principles to get beyond the diffraction barrier
in order to control the fluorescence of individual molecules to view them in high detail. By turning the light emitted from the molecules on or off,
the scientists could reconstruct the location of the molecules at the nanometer scale. Here how it works:
a fraction of fluorescent molecules or proteins is excited first by a weak light pulse. Then after their emission fades, another subgroup of fluorescent molecules are excited.
Investors must see the light Light is a unifying science across fields like chemistry and physics
But learning how to manipulate light is costly and takes time. Technologies are built largely on investments in basic science research as well as, of course, serendipity and circumstantial opportunities.
In my own work as a chemistry researcher, my group invented a laser the size of a virus particle,
These tiny lasers are promising light sources that can be used to send and receive data with high bandwidths as well as to detect trace molecules or bio-agents.
Construction of our nanolaser required precise control over the shape and location of the adjacent gold nanoparticles.
The UN designation of this International Year of Light will spotlight the potentials of these kinds of innovations
From new ways to shake off those winter blues to manipulating light in small spaces, the trajectory for artificial light is bright indeed n
#Steam Machine Turns Poop into Clean drinking water Bill gates wants to turn your poop into clean drinking water, and he's got just the machine to do it.
Researchers have developed a light-emitting graphene transistor that works in the same way as the filament in a light bulb."
and temperature incandescent filaments must get extremely hot before they can produce visible light. This new graphene device,
the researchers said. 8 Chemical elements You've Never Heard Of Making light When electric current is passed through an incandescent light bulb's filament usually made of tungsten the filament heats up and glows.
Electrons moving through the material knock against electrons in the filament's atoms, giving them energy.
As for why this is the first time light has been made from graphene, study co-leader Yun Daniel Park,
"The light emitted from the graphene also reflected off the silicon that each piece was suspended in front of.
The reflected light interferes with the emitted light, producing a pattern of emission with peaks at different wavelengths.
That opened up another possibility: tuning the light by varying the distance to the silicon.
The principle of the graphene is said simple, Park, but it took a long time to discover."
or other therapies safely to sites of disease are already seeing the light of day.
so that light can be delivered correctly. The hope is that this new application of optogenetics to voluntary muscles will help in medical research
Largest tetanic contractions are observed with 5-ms light pulses at 30z, resulting in 84%of the maximal force induced by electrical stimulation.
Three expert and four novice endoscopists performed white light endoscopy followed by LCE and HRME. All optical images were compared to gold standard of histopathology.
#Gastrisail Lights Up Stomach from Within for Accurate Sleeve Gastrectomy Procedures Medtronic just released in the U s. the Gastrisail gastric positioning system for sleeve gastrectomy procedures.
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