director of the Wireless@MIT center. ou could also imagine it being used to operate your lights and TVS,
With that motion, the two lights trace an arc that is recorded by a camera positioned about 1. 5 meters to the side of the patient.
which light reflected off of virtual objects. This is essentially, how Pixar makes movies. Some researchers,
in principle, be produced by light of any color, coming from any direction, reflecting off of a surface of the right color with the right orientation.
Manufacturing consistency Thermal and mechanical fatigue, including vibration Durability to ultraviolet light, humidity, temperature, and voltage Diodes, shading,
and durability issues associated with ultraviolet light exposure. Manufacturers can differentiate themselves from their competitors and optimize their module designs for the intended applications,
They designed a pixel that can not only measure incident light but also convert the incident light into electric power.
The key enabling device in a pixel is the photodiode, which produces an electric current when exposed to light.
The same photodiode is used also in solar panels to convert incident light to electric power. The photodiode in a camera pixel is used in the photoconductive mode
while in a solar cell it is used in the photovoltaic model. Nayar, working with research engineer Daniel Sims BS'14 and consultant Mikhail Fridberg of ADSP Consulting, used off-the-shelf components to fabricate an image sensor with 30x40 pixels.
each pixel's photodiode is operated always in the photovoltaic mode. The pixel design is very simple,
"So that little thing that's so light,"he says, "is actually stronger than steel.""The F/A-18 Hornet became the U s. Navy and Marine corps'first strike fighter in 1978;
#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
of advancing experiments that use ultrafast electron diffraction to reveal the structure and dynamics of matter.
The wavelength of this radiation is around 1000 times shorter than the electromagnetic radiation used by current particle accelerators the Large hadron collider uses 400 MHZ microwaves everything else on the terahertz accelerator can also be 1000 times smaller.
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 method involves using a powerful laser to physically damage the optical equipment used to send
This involves Eve shining a bright light at Alice and then measuring the reflected light to try
and work out how Alice is encoding a series of photons sent to her by Bob that will constitute the secret key.
the team shone an infrared laser at Alice's photodetector for up to 30 s after disconnecting the fibre channel,
The researchers discovered that they could burn a hole in the photodiode detector and render it either partially
or completely insensitive to light the latter requiring at least 1. 7 W of laser power. They repeated the experiment using six detectors,
The group also used the same laser to weaken the security of"quantum coin tossing,
In this case, the impaired sensitivity of the photodetector can increase Bob's odds of being able to successfully cheat above
But Makarov and colleagues were able to enlarge the size of the pinhole by exposing it to a 10 second pulse from a 3. 6 W near-infrared laser.
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,
suggesting that an additional detector could be installed to register the light from any damaging laser beams.
generated using laser beams, and is 100 times stronger than that of the world strongest magnets.
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.
The electric field of the laser beams creates what known as a periodic potential landscape, similar to an egg carton,
ultrahigh magnetic field, using laser beams to push atoms around in tiny orbits, similar to the orbits of electrons under a real magnetic field.
and two additional laser beams to control the motion of the atoms. On a flat lattice, atoms can easily move around from site to site.
In this scenario, atoms could only move with the help of laser beams. ow the laser beams could be used to make neutral atoms move around like electrons in a strong magnetic field
Using laser beams, the group could make the atoms orbit, or loop around, in a radius as small as two lattice squares, similar to how particles would move in an extremely high magnetic field. nce we had the idea,
All we had to do was take two suitable laser beams and carefully align them at specific angles,
and a half to optimize the lasers and electronic controls to avoid any extraneous pushing of the atoms,
which could make them lose their superfluid properties. t a complicated experiment, with a lot of laser beams, electronics,
This research outcome potentially allows for great flexibility in the design and optimization of electronic and optoelectronic devices like solar panels and telecommunication lasers.
but also paves a new way to systematically search binary black holes via the nature of their ultraviolet light emission,
a device that you can see under an optical microscope, and wee seeing the quantum effects in a trillion atoms instead of just one.
Coauthors Aashish Clerk from Mcgill University and Florian Marquardt from the Max Planck Institute for the Science of Light proposed a novel method to control the quantum noise,
such as those obtained by LIGO, the Laser interferometry Gravitational-wave Observatory, a Caltech-and-MIT-led project searching for signs of gravitational waves,
#Engineers Develop Optical devices That Shape Light in Exotic Ways Engineers from the Jet propulsion laboratory and the California Institute of technology have developed innovative flat,
optical lenses that are capable of manipulating light in ways that are difficult or impossible to achieve with conventional optical devices.
Manipulating the polarization of light is essential for the operation of advanced microscopes, cameras and displays;
Additionally, the new, flat lenses can be used to modify the shape of light beams at will. 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.
and light may be allowed to propagate in one direction but not the other. Now, in a paper published in the journal Nature,
In this case, the exceptional rings were found in a slab of nanostructured material called a photonic crystal.
a Yale postdoctoral researcher in applied physics. xamples include more sensitive biological and chemical sensors, lasers with higher output power,
#Scientists Develop an Ultrathin Invisibility Cloak for Visible light A team of scientists have invented an ultra-thin invisibility cloak that can conform to the shape of an object
and conceal it from detection with visible light. Invisibility cloaks are a staple of science fiction and fantasy, from Star trek to Harry potter,
and conceal it from detection with visible light. Although this cloak is only microscopic in size,
The surface of the skin cloak was engineered meta to reroute reflected light waves so that the object was rendered invisible to optical detection
when the cloak is activated. his is the first time a 3d object of arbitrary shape has been cloaked from visible light,
The paper is titled n Ultra-Thin Invisibility Skin Cloak for Visible light. Xingjie Ni and Zi Jing Wong are the lead authors.
It is the scattering of light be infrared it visible , X-ray, etc.,from its interaction with matter that enables us to detect
For the past ten years, Zhang and his research group have been pushing the boundaries of how light interacts with metamaterials,
what it concealed was not. reating a carpet cloak that works in air was so difficult we had embed to it in a dielectric prism that introduced an additional phase in the reflected light,
when red light struck an arbitrarily shaped 3d sample object measuring approximately 1, 300 square microns in area that was wrapped conformally in the gold nanoantenna skin cloak,
the light reflected off the surface of the skin cloak was identical to light reflected off a flat mirror,
and the phase of the scattered light so that the object remains perfectly hidden, says co-lead author Zi Jing Wong,
The ability to manipulate the interactions between light and metamaterials offers tantalizing future prospects for technologies such as high resolution optical microscopes and superfast optical computers.
Invisibility skin cloaks on the microscopic scale might prove valuable for hiding the detailed layout of microelectronic components or for security encryption purposes.
and conceal it from detection with visible light. Invisibility cloaks are a staple of science fiction and fantasy, from Star trek to Harry potter,
and conceal it from detection with visible light. Although this cloak is only microscopic in size,
The surface of the skin cloak was engineered meta to reroute reflected light waves so that the object was rendered invisible to optical detection
when the cloak is activated. his is the first time a 3d object of arbitrary shape has been cloaked from visible light,
The paper is titled n Ultra-Thin Invisibility Skin Cloak for Visible light. Xingjie Ni and Zi Jing Wong are the lead authors.
It is the scattering of light be infrared it visible , X-ray, etc.,from its interaction with matter that enables us to detect
For the past ten years, Zhang and his research group have been pushing the boundaries of how light interacts with metamaterials,
what it concealed was not. reating a carpet cloak that works in air was so difficult we had embed to it in a dielectric prism that introduced an additional phase in the reflected light,
when red light struck an arbitrarily shaped 3d sample object measuring approximately 1, 300 square microns in area that was wrapped conformally in the gold nanoantenna skin cloak,
the light reflected off the surface of the skin cloak was identical to light reflected off a flat mirror,
and the phase of the scattered light so that the object remains perfectly hidden, says co-lead author Zi Jing Wong,
The ability to manipulate the interactions between light and metamaterials offers tantalizing future prospects for technologies such as high resolution optical microscopes and superfast optical computers.
Invisibility skin cloaks on the microscopic scale might prove valuable for hiding the detailed layout of microelectronic components or for security encryption purposes.
an element used in incandescent light bulbs. As the sample was tilted 62 times the researchers were able to slowly assemble a 3-D model of 3, 769 atoms in the tip of the tungsten sample.
They also looked at an indirect and much less studied effect of UV LIGHT. When the active ingredients of sunscreen absorb UV LIGHT,
a chemical change triggers the generation of oxygen-carrying molecules known as reactive oxygen species (ROS). If a sunscreen agents penetrate the skin,
The findings are particularly significant in the light of improving life expectancies and the associated increase in cases of ARMD.
#A Light-Reflecting Balloon Catheter Repairs the Heart without Surgery Harvard-affiliated researchers have designed a specialized catheter for fixing holes in the heart by using a biodegradable adhesive and patch.
Their catheter device utilizes UV LIGHT technology and can be used to place the patch in a beating heart.
The clinician then deploys the patch and turns on the catheter UV LIGHT. The light reflects off of the balloon shiny interior
and activates the patch adhesive coating. As the glue cures, pressure from the positioning balloons on either side of the patch help secure it in place.
and then activate it using UV LIGHT, all within a matter of five minutes, and in an atraumatic way that doesn require a separate incision. e
light and texture, it is a major step. t does indeed sound like a major step when Nili goes on to describe the capability of the newly tuned memristors. e have introduced now controlled faults or defects in the oxide material along with the addition of metallic atoms,
#See through Walls by the Glow of Your Wi-fi It used to be that a bad guy besieged by police could just shoot out the lights and hide in the dark.
and whether the fog lights are on. Auxiliary data might include barometric pressure, the temperature of the road itself (taken by infrared sensors), barometric pressure,
The semitransparent design of these solar cells means that they can absorb light from both sides
and could allow them to be used as windows that serve the dual function of letting light into a building
In the design of the Hong kong researcherssolar cell, the perovskite serves as active layer for harvesting the light,
The semitransparent design of these solar cells means that they can absorb light from both sides
and could allow them to be used as windows that serve the dual function of letting light into a building
In the design of the Hong kong researcherssolar cell, the perovskite serves as active layer for harvesting the light,
The researchers applied the experimental spectroscopy technique to examine hydrogen absorption in single palladium nanoparticles.
#Reseachers Create First Integrated Circularly Polarized Light detector on a Silicon chip What do you get when you combine some biomimicry, metamaterials and nanowires?
It turns out to be integrated the first circularly polarized light detector on a silicon chip. Its development could usher in a new generation of portable sensors that can use polarized light for applications ranging from drug screening to quantum computing.
Researchers at Vanderbilt University have used silver nanowires to fabricate a metamaterial that is capable of detecting polarized light in a way not unlike the way cuttlefish, bees,
the polarization state of light can provide a lot of valuable information, said assistant professor Jason Valentine in a press release. owever,
In contrast to non-polarized light, in which the electric fields of the photons are oriented in random directions,
With circularly polarized light, the plane is continually rotating through 360 degrees.)One of the distinguishing capabilities of circularly polarized light (CPL) is that it can discern the difference between right-handed and left-handed versions of molecules property known as chirality.
#MIT's 3-D Microwave Camera Can See through Walls Visible light is all well and good for things like eyeballs,
in 3-D. A microwave camera is sort of like a cross between a visible light camera and a radar imaging system,
including the use of reconfigurable focal-plane sensors or shrinking the transmission wavelength from microwave (3 cm) down to millimeter wave (5 mm),
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 wavelength is long enough that we can fabricate waveguides with conventional machining techniques, provide accurate timing,
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.
his proof-of-principle terahertz linear accelerator demonstrates the potential for an all-optical acceleration scheme that can be integrated readily into small-scale laboratories providing users with electron beams that will enable new experiments in ultrafast electron diffraction and X-ray production
The researchers added their new lights nearly meet the most stringent requirements of the National Television systems Committee (NTSC),
which emits deep blue light very brightly. This compound also emits light efficiently because its design reduces the chances that light-emitting excitonslectrons bound to their positively charged counterparts,
holesill either get lost as heat or destroy the compound itself, Lee says. Unfortunately, this new PHOLED has a brief operational lifetime,
just like many other blue PHOLEDS, Lee says. Future research will focus on stabilizing the molecule at the heart of this new PHOLED to create a longer-lasting version of the device.
Intel Realsense, like Microsoft more famous Kinect cameras, work by projecting a signal (a laser
or infrared light) and measuring how it bounces or otherwise interacts with the environment. They work well for indoor situations and benefit from an existing base of software designed for this technique,
The scientists used a spectroscopy technique to analyze the chemical composition of dark streaks (which NASA refers to as Recurring Slope Lineae
you have electrical conduits, lights, and outlets. n order for DOM Indoors to be viable in real life,
because the researchers use a red dye to tune the wavelength of light it captures
because the researchers use a red dye to tune the wavelength of light it captures
"We're good at generating electrons from light efficiently, but chemical synthesis always limited our systems in the past,
Visitors to the cave must have created artificial light, as with a torch, Wood said. The people who did cave drawings in Europe had such technology,
the new technique has some similarities to the burgeoning use of light to activate cells
The new method-which uses the same type of waves used in medical sonograms-may have advantages over the light-based approach-known as optogenetics-particularly
By shining a focused laser on the cells, they can selectively open these channels, either activating or silencing the target neurons.
and conceal them from detection with visible light. Although the cloak is microscopic, the principles behind the technology should enable it to be scaled-up to conceal macroscopic items as well,
The cloak's surface was metaengineered to re-route reflected light waves to render the object invisible to optical detection when activated.
"This is the first time a 3d object of arbitrary shape has been cloaked from visible light, "said author Xiang Zhang, director of US department of energy's Berkeley l Laboratory material sciences division n
which colors of light they absorb. But this instrument, a spectrometer, is not as sharp as the camera,
#UV LIGHT-enabled catheter to fix holes in heart without operation WASHINGTON: Researchers have designed a specialised catheter for fixing holes in the heart using a biodegradable adhesive
Their newly designed catheter device utilises UV LIGHT technology, and can be used to place the patch in a beating heart.
The clinician then deploys the patch and turns on the catheter's UV LIGHT. The light reflects off of the balloon's interior
and activates the patch's adhesive coating. As the glue cures, pressure from the positioning balloons on either side of the patch help secure it in place.
OCSD differs from other space-based laser communication systems because the laser is mounted hard to the spacecraft body,
and the orientation of the Cubesat controls the direction of the beam. This makes the laser system more compact than anything previously flown in space.
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.
The second OCSD mission is scheduled to be launched in February 2016 6
#Cure for cancer might accidentally have been found, and it could be malaria Scientists might have made accidentally a huge step forward in the search for a cure for cancer discovering unexpectedly that a malaria protein could be an effective weapon against the disease.
Researchers have built now a working tractor beam that uses high-amplitude sound waves to generate an acoustic hologram
"Here we individually control dozens of loudspeakers to tell us an optimal solution to generate an acoustic hologram that can manipulate multiple objects in real-time without contact,
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.
Layer by layer, the 3d printer tranforms titanium alloy powder into cups with micro-hole structure,
flexible tube with a light and camera attached to its end passes through a person digestive system.
which have a much shorter wavelength than the incident sound waves that produce them, and since the evanescent waves decay very fast as they propagate,
and the method needs to be refined before it can be applied in practice. ecause the size of the polymer structure has to be adjusted to the operational wavelength,
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,
As the directed light moves upward and hardens the resin, the object is built layer by layer,
durable prints. he big work wee done is to deploy the chemistry for a new resin that is capable of being cured not by UV LIGHT,
Their distributed network of fabrication includes Fab Labs and Maker Space, equipping all participants with digital fabrication machines such as laser cutters, 3d printers,
K2m 3d Lamellar Titanium Technology uses advanced 3d printing technology to mimic lamellar structures and rowspinal implants with titanium powder and a high-energy laser beam.
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.
which is solidified then once exposed to UV LIGHT. This advanced process results in these 3d printed microfish, able to swim naturally through liquids,
and detoxification is monitored easily due to the red light that is emitted on the device when nanoparticles are introduced to the particular toxins.
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
and can render it undetectable with visible light. The researchers said while their experiments involved cloaking a miniscule object they believe the technology could be made to conceal larger objects, with military and other possible applications.
Their surfaces bear features much smaller than the size of a wavelength of light. They redirect incoming light waves,
The cloaking'skin'boasts microscopic light scattering antennae that make light bouncing off an object look
which includes a photovoltaic cell using a high-quality semiconductor crystal similar to the ones for lasers
*and ion concentration--critical markers for many disorders--rely on various nanosensors that are probed using light at optical frequencies.
and orders of magnitude larger than any equivalent frequency shifting observed through traditional magnetic resonance spectroscopy approaches.
in this case, the light-emitting layer and all other components are produced by means of wet-chemical, printable methods.
which the light-emitting particles are sandwiched in a dielectric binder layer. At least one of the conductive layers is also transparent.
On application of an AC voltage, light is emitted from the electroluminescent layer. e embed luminous particles in the form of functionalized zinc sulphide nanoparticles as phosphors into the binder layer,
At present this allows the generation of green and blue-green light. The electroluminescent light sheets developed at the INM can be connected directly to the customary mains voltage of 230 volts.
The researchers are currently working on further functionalization of the phosphor nanoparticles. ur goal is to generate white light by means of an altered doping
where multiphoton microscopy for biological applications was pioneered. hese alumni embody the ebb Groupstyle of mixing physics,
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,
instead scanning the sample with infrared light to directly measure the chemical composition of the cells.
For example, the chemistry of the hydrogel can be modified to respond to changes in temperature, light, electric and magnetic fields,
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.
Currently, colors on computer and iphone screens come from dye materials pre-placed on the pixels.
because one wavelength of light is absorbed completely, "explains Dr. Guo, while his student holds a collection of color samples."
A lot of colors you see in nature are due to wavelength selective light absorption in organic molecules which cannot withstand high temperatures,
Ultraviolet light destroys organic dye molecules over time, leading to color change and fading. The new technology may hold promise for many applications such as for jewelry, automotive interior trim, aviation, signage, colored keypads, wearable and electronic displays.
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