па можно е да станува збор за истата технологија како на цнн сепак и онаа на цнн на крај неофицијално излезе дека е класична хрома само со 3д покривање на сите агли околу водителот или објектот т.н. томографија - en.wikipedia.org/wiki/Tomography сигурно опремата ја обезбедиле како и цнн од www.vizrt.com. инаку цнн сеуште мислам јавно немаат истакнато дали муабетот им беше во томографска околина или холографска, но сигурно не е холограмска
па можно е да станува збор за истата технологија како на цнн сепак и онаа на цнн на крај неофицијално излезе дека е класична хрома само со 3д покривање на сите агли околу водителот или објектот т.н. томографија - en.wikipedia.org/wiki/Tomography сигурно опремата ја обезбедиле како и цнн од www.vizrt.com. инаку цнн сеуште мислам јавно немаат истакнато дали муабетот им беше во томографска околина или холографска, но сигурно не е холограмска
абе тоа им беше publicity stunt што би рекле они. Како кај нас Македонија WiFi земја. Сигурно нема да искочи Тед Тарнер и да каже се зезавме не беше холограм
па добро цнн и се е можно, сепак она на цнн мене повеќе ми личи на холографска технологија како што спомнувам во дискусијата за цнн, и реално како медиум можат да си дозволат кој било од посочените таму холографски екрани, не дека е тоа нешто астрономски скапо...
тоа е томографски принцип, ок тогаш дефинитивно искористиле фол, инаку ова постоеше и пред цнн да го најави бомбастично, но не во живо, процесирањето во живо на вакви томографски алгоритми е малку проблематично, а како што кажува човеков бељата е во прецизна синхронизација на сликата и звукот од сите камери...
Lumex has launched the QuantumBrite flexible LED backlight technology. Completely customizable in any shape, size and color, the backlights are up to 88% thinner and can cost up to 80% less than standard LED backlight technology. Standard LED backlights are 5 mm thick; QuantumBrite is made out of an ultrathin polycarbon film and is only 0.6 mm thick on its widest side. It opens the door for new applications such as those that require curved lighting. The RoHS-compliant backlights are suitable not only for traditional applications such as flat panel displays and indicator lighting, but also for... http://www.photonics.com/Article.aspx?AID=45585
"The OLED displays industry is under severe pressure to reduce manufacturing costs in order to compete with LCDs. We believe that larger OLED displays can be manufactured at a cost of up to 30 percent less than today’s LCDs."... http://www.photonics.com/Article.aspx?AID=29702
OLEDs can be printed or patterned on flexible substrates, something impossible to do with other lighting and display technologies. This opens up such possibilities as displays that can be rolled up, flattened for use and then rolled up again. It also makes possible the creation of curved lighting that, for instance, hugs a wall and travels around a corner. http://www.photonics.com/Article.aspx?PID=5&VID=125&IID=838
“The unique combination of extraordinary color, high efficiency, demonstrated stability and low-cost patterning makes QLEDs the next breakthrough in electroluminescent technology for displays and solid-state lighting applications,” said Dr. Seth Coe-Sullivan, QD Vision chief technology officer. The company said that its deep-red QLEDs now offer greater efficacy at equivalent color than the best reported phosphorescent OLEDs, and that its green and blue QLEDs match the performance of fluorescent OLEDs, but with superior color performance... http://www.photonics.com/Article.aspx?AID=47267
до каде е Xray-от? првиот цитат се однесува на дигитално процесиран x-ray (скоро се подновивме со вакви ренген скенери на клинички), вториот цитат се однесува на енормното зголемување на x-ray резолуцијата, а третиот за инситу томограф за индустриски инспекции а можеби утре и за брза помош...
...Other types of digital imaging technologies use electronic sensors. A majority of them first convert the X-rays into visible light (using a GdO2S or CsI layer), which is further captured using a CCD or a CMOS image sensor. Some of them use a hybrid arrangement which first converts the X-rays into electricity (using a CdTe layer) and then captures this electricity as an image with a reading section based on CMOS technology... http://en.wikipedia.org/wiki/Digital_radiography#Historical_milestones_for_Digital_Intraoral_Sensors
...Initial use of the solid-state x-ray image intensifier has hinted that the technology has great promise. Inherent detector resolution measurements have indicated the ability to resolve upward of 20 line pairs per millimeter. Images taken across a range of clinically relevant exposure conditions have demonstrated quantum-limited, instrumentation-noise-free images over more than three orders of magnitude, below which the incident photon statistics are so poor that a useful image no longer can be formed. Comparative images taken with a state-of-the-art x-ray image intensifier and the new solid-state x-ray image intensifier, under the same exposure conditions and imaging geometry, reveal that the solid-state imager can provide a substantial improvement over current technologies...
Shown are two comparative images taken with a state-of-the-art x-ray image intensifier (XII) and a recently developed solid-state x-ray image intensifier (SSXII) of an asymmetric stent used for treatment of neurovascular aneurysms. Both images were acquired using the same exposure condition and imaging geometry. http://www.photonics.com/Article.aspx?AID=30486
compact CT (compact 3D X-ray(compact x-ray tomography system)
X-ray tomography, in which numerous scans are combined into cross-sectional images, is handy for inspecting products and structures for production errors and other flaws. However, the instruments usually weigh up to several tons, with even the lightest ones approximately 50 kg. Stefan Hebele of the Development Center for X-Ray Technology of the Fraunhofer Institute for Integrated Circuits in Erlangen, Germany, developed a micro CT scanner that weighs only 19 kg and measures just 350 × 300 × 230 mm.
колку има за мозгање додека фатиме крај на телото како интелигентен дизајн...
Strain and spin could drive ultralow energy computers
Hybrid spintronics/straintronics processors made from such magnets would require very little energy and therefore could work battery-free by harvesting energy from their environment. As a result they could find a host of unique applications, including implantable medical devices and autonomous sensors.
Modern-day computers store data on magnetic hard disk drives, in which the direction – "up" or "down" – of the magnetization in a small region of the disk corresponds to a binary bit ("1" or "0", for example). Data are read by a magnetoresistance element and written by heating the bit with a laser and then flipping the moments with a magnetic field pulse from a tiny nearby coil.
Flipping bits with spin More recently, researchers have experimented with the idea of exploiting "spin transfer torque", whereby a current of spin-polarized electrons can flip the bits without the need for an external magnetic field. This idea can be taken further by using a current to move domain walls in a magnet and thus flip the bits in this way... http://nanotechweb.org/cws/article/tech/44911
Laser flips magnetic bit without any help
Physicists in Netherlands and Japan are the first to flip the value of a magnetic memory bit by firing a very short pulse of circularly-polarized laser light at it. Unlike other magneto-optic data storage systems, no external magnetic field was required to flip the bit, which meant that its value could be changed about 50 thousand times faster than the fastest conventional memory. The result could lead to the development of low-cost and ultrafast all-optical magnetic hard disk drives... http://prl.aps.org/abstract/PRL/v99/i4/e047601
German geniuses hit 800Mbps with light bulb WLAN Last year, Chinese scientists showed off some new old-school tech, transmitting data with blue LEDs that flicker faster than the human eye can perceive. This throwback to the good ol' days of IR receivers was able to hit speeds of 2Mbps, but leave it to the fine folks at the Heinrich Hertz Institute to push the light bulb networking tech to the extremes. Earlier this year researchers hit 500Mbps with white LEDs; now, using a combination of white, green, blue, and red, the team ramped that up to 800Mbps, officially putting Ethernet on notice. The line-of-sight networking won't actually replace your standard Cat 5 line or WiFi router, but it could find a home in places like hospitals where radio-based wireless technology can cause problems for sensitive equipment. With any luck, we'll soon be bathing our homes in HD-streaming illumination http://www.engadget.com/2011/08/01/german-geniuses-hit-800mbps-with-light-bulb-wlan/
LEDs to Transfer Optical Data to Mobile Devices MUNICH, Germany, Aug. 2, 2011 — Common room-illuminating LEDs are now being used to transport HD video from the Internet directly to laptops and other mobile devices. With only a few adjustments, regular LEDs are being turned into optical WLANs — safely shuttling high-speed data wirelessly and with no loss in quality. Within the scope of the EU's OMEGA project (the Home Gigabit Access project, consisting of 20 European partners from industry and academia), scientists from the Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute (HHI) in Berlin, in collaboration with industry partners Siemens and France Telecom Orange Labs, demonstrated VLC (visible light communication) technology that can transfer data wirelessly.
What makes this technology promising is that there is no requirement to install a different setup in the home to reap the benefits of VLC-enabled data transfer. The LEDs used for lighting purposes multitask by acting as transmitters for data transfer. With the aid of a component called a modulator, the LEDs are turned off and on in very rapid succession so that information is transferred. The modulation of the light is imperceptible to the human eye. A simple photodiode on the laptop acts as a receiver. With the help of overhead LEDs that can light an area of about 90 sq ft, HHI scientists demonstrated actual data transfer at a speed of 100 Mb/s. The data transfer was completed without any loss. The LEDs were used as transmitters, and the receiver’s maximum range was the radius that the LEDs could light up. As of now, scientists are working to increase the range of receivers. Under these conditions, they were successful in transferring four HD-quality videos simultaneously to four different receiving end gadgets (laptops in this case). “The diode catches the light, electronics decode the information and translate it into electrical impulses, meaning the language of the computer,” said Klaus-Dieter Langer, HHI project manager. One advantage is that it takes only a few components to prepare the LEDs so that they function as transfer media. One disadvantage is that as soon as something comes between the light and the photodiode (for example, when someone holds his hand over the diode), the transfer is impaired. Currently, the scientists are developing their systems toward higher bit rates. “Using red-blue-green-white light LEDs, we were able to transmit 800 Mb/s in the lab,” said Langer. “That is a world record for the VLC method.” The HHI scientists will showcase how videos are transmitted by light at the International Telecommunications Fair IFA in Berlin, to be held from Sept. 2 to 7, 2011.
For more information, visit: www.fraunhofer.de/en
http://www.photonics.com/Article.aspx?AID=47878
Radio waves do not propagate for a long distance under water.
We were able to demonstrate that the flashlight visible light transmitter was able to transmit signals for 30 meter distance. A diver can communicate with a buddy diver using voice. LED flashlight’s light is intensity-modulated. A photo diode is attached next to LEDs. Rise is planning to sell the product in 2011 http://smartlighting.rpi.edu/resources/PDFs/smartspaces2011/Smart_Lighting_ERC_Haruyama_2011_02_08.pdf
Graphene optical modulators could speed communications
A new optical device that uses graphene to switch a light on and off could soon break digital communication speed limits.
The switching ability is the fundamental characteristic of a network modulator, which controls the speed at which data packets are transmitted. The faster the data pulses can be sent out, the greater the volume of information that can be transmitted.
Researchers at the University of California tuned the graphene electrically to absorb light in wavelengths used in data communications. The graphene-based modulators could soon allow customers to stream full-length, high-definition 3-D movies onto a smart phone in a matter of seconds.
The researchers found that the energy of the electrons – or Fermi level – in the material can be easily altered, depending upon the voltage applied to it. The Graphene’s Fermi level, in turn, determines whether the light is absorbed or not. Electrons can be drawn out of graphene when a sufficient negative voltage is applied, making it no longer possible to absorb photons. The light is switched on” because the graphene becomes totally transparent as the photons pass through.
Graphene is also transparent at certain positive voltages because the electrons become packed so tightly that they cannot absorb photons. The scientists found a sweet spot in the middle, however, where there is just enough voltage applied so the electrons can prevent the photons from passing, effectively turning the light “off.”
To test this, the team layered graphene on top of a silicon waveguide to fabricate optical modulators. They achieved a modulation speed of 1 GHz but found that the speed theoretically could reach as high as 500 GHz for a single modulator.
Graphene-based modulators could overcome the space barrier of optical devices, the researchers believe. They successfully shrunk a graphene-based optical modulator down to a relatively tiny 25 square microns, a size roughly 400 times smaller than a human hair. The footprint of a typical commercial modulator can be as large as a few square millimeters.
Even at such a small size, graphene packs a punch in bandwidth capability. It can absorb a broad spectrum of light, ranging over thousands of nanometers, from the ultraviolet to the infrared. This allows it to carry more data than current state-of-the-art modulators, which operate at a bandwidth of up to 10 nm.
“Camouflage outfits that blend with a variety of environments
without need of an outside power source — say, blue when at sea and then
brown in a desert environment — is where this work could eventually
lead,” says principal investigator George Bachand. “Or the same effect
could be used in fabricating chic civilian clothing that automatically
changes color to fit different visual settings.”
Such clothing could be a reality in five to ten years, he says.
The power source for both the biological and the lab method relies on
the basic cellular fuel called ATP, which releases energy as it breaks
down. Fifty percent (roughly) is absorbed by the motor proteins — tiny
molecular motors able to move along surfaces.
When fish change colors, motor proteins aggregate and disperse skin
pigment crystals carried in their “tails” as they walk with their “feet”
along the microtubule skeleton of the cell. By this means, they
rearrange the color display.
To put motor proteins in motion or switch them off, nature uses complex
signaling networks. The Bachand group’s method is simpler. It involves
the simple genetic insertion of a kind of docking port in the motor
protein’s structure. What docks are zinc ions. Bound zinc ions turn the
protein’s action to “off.” Stripping zinc ions out with chemical agents
allows the motor protein to work again. The effect is controllable, and
even reversible.
“We essentially reengineered the protein structure to introduce a switch
into the motor,” says Bachand. “So we can now turn our nanofluidic
devices on and off.”
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