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Promise shown for data encryption and data storage using holograms
March 28, 2006Optical image correlation in photorefractive mesogenic composites
The rapidly developing digital age demands greater processing power, data storage and data encryption for computer based technologies. Recent developments point towards optical information processing as a great leap forward.
These optical technologies use light based techniques and sources such as lasers to achieve results better than traditional electronic computing and more conventional magnetic based storage methods.
Holograms have been shown to be able to store, write and read massive amounts of data. These holographic data storage techniques can also be accessed at high speeds.
The holographic technique is of particular interest as it allows the registration, transformation, and manipulation of the spatial structure of the light wave fronts. This paper, by Japanese researchers from Nagaoka University of Technology and University of Hyogo, Akira Emoto, Hiroshi Ono and Nobuhiro Kawatsuki presents a matched filter technique which allows the spatial correlation of two optical images for pattern classification and/or detection.
The results demostrate optical image correlation by means of Fourier transform holograms in the region of Raman-Nath diffraction on to photorefractive mesogenic composites film. The reconstructed image produced is readily recognisable as common numerals. Greater study is required into this technique but it points to a new method for fast, efficient storage of incredible amounts of data with high levels of security encryption.
AZoNetwork
Holograms have been shown to be able to store, write and read massive amounts of data. These holographic data storage techniques can also be accessed at high speeds.
The holographic technique is of particular interest as it allows the registration, transformation, and manipulation of the spatial structure of the light wave fronts. This paper, by Japanese researchers from Nagaoka University of Technology and University of Hyogo, Akira Emoto, Hiroshi Ono and Nobuhiro Kawatsuki presents a matched filter technique which allows the spatial correlation of two optical images for pattern classification and/or detection.
The results demostrate optical image correlation by means of Fourier transform holograms in the region of Raman-Nath diffraction on to photorefractive mesogenic composites film. The reconstructed image produced is readily recognisable as common numerals. Greater study is required into this technique but it points to a new method for fast, efficient storage of incredible amounts of data with high levels of security encryption.
AZoNetwork
Data Storage Current Events and Data Storage News RSSBerkeley Researchers Take the Lead Out of Piezoelectrics
There is good news for the global effort to reduce the amount of lead in the environment and for the growing array of technologies that rely upon the piezoelectric effect.
Molecules on a string, and why size isn't the only thing that matters for data storage
Molecules of hydrogen are difficult to steer with electric fields because of the symmetrical way that charges are distributed within them. But now researchers at ETH Zurich have found a clever technique to get a grip on the molecules.
Graphitic memory techniques advance at Rice
Advances by the Rice University lab of James Tour have brought graphite's potential as a mass data storage medium a step closer to reality and created the potential for reprogrammable gate arrays that could bring about a revolution in integrated circuit logic design.
Breaking the law, at the nanoscale
A well-established physical law describes the transfer of heat between two objects, but some physicists have long predicted that the law should break down when the objects are very close together.
Unexpectedly long-range effects in advanced magnetic devices
A tiny grid pattern has led materials scientists at the National Institute of Standards and Technology (NIST) and the Institute of Solid State Physics in Russia to an unexpected finding-the surprisingly strong and long-range effects of certain electromagnetic nanostructures used in data storage.
Scientists Discover Magnetic Superatoms
A team of Virginia Commonwealth University scientists has discovered a 'magnetic superatom' - a stable cluster of atoms that can mimic different elements of the periodic table - that one day may be used to create molecular electronic devices for the next generation of faster computers with larger memory storage.
A Billion Year Ultra-Dense Memory Chip
When it comes to data storage, density and durability have always moved in opposite directions - the greater the density the shorter the durability.
Multiferroics -- making a switch the electric way
Multiferroics are materials in which unique combinations of electric and magnetic properties can simultaneously coexist.
Vise squad: Putting the squeeze on a crystal leads to novel electronics
A clever materials science technique that uses a silicon crystal as a sort of nanoscale vise to squeeze another crystal into a more useful shape may launch a new class of electronic devices that remember their last state even after power is turned off.
X marks the spot: Ions coldly go through NIST trap junction
Physicists at the National Institute of Standards and Technology (NIST) have demonstrated a new ion trap that enables ions to go through an intersection while keeping their cool.
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