news digest ♦ Novel Devices
digital video out, the camera uses patented image enhancement and automatic gain control algorithms to produce clear usable video over a very wide range of lighting conditions.
Developed in 2008, these algorithms have ensured the SU640HSX continues imaging long after competitor’s have packed up their cameras and gone home.
SWIR snapshot Mil-rugged high sensitivity high-definition InGaAs camera
The new Sensors Unlimited GA1280JSX-12.5 snapshot camera is the third megapixel-class InGaAs commercial camera put into production by UTAS since 2011 and will be demonstrated at the show booth.
Featuring SUI’s unique extended sensitivity pixel design, now in a 12.5 µm pixel pitch, the new camera is ideal for high-definition imaging in varying conditions from low-level light to daylight, and through low-density obscurants.
The light-weight and compact size enables easy integration into aerial, mobile and hand-held surveillance or hyperspectral systems.
What’s more, the camera employs on-board Automatic Gain Control (AGC) and built-in non-uniformity corrections (NUCs), allowing it to address the challenges of high-dynamic-range urban night imaging without blooming.
Camera Link digital output provides for plug-and-play video with 12-bit images for digital image processing or transmission.
UTAS / Sensors Unlimited will be showcasing these cameras at booth #8622 at BIOS and #622 at Photonics West and will also be able to describe companion HD models, the GA1280J-15 and the GA1280JS-12.5 cameras, which can be used for high-definition microscope inspection of integrated circuits and MEMs devices.
Also being demonstrated will be the Sensors Unlimited SU640HSX, the very sensitive InGaAs camera for pilot or driver vision enhancement, laser detection, wide area surveillance, imaging through low-density fog, dust or smoke, video-rate nano-tube imaging, photoluminescence and weak electroluminescence, and other low- light applications.
Providing both analogue EIA-170 video and 12-bit 154
www.compoundsemiconductor.net March 2014
Novel Devices Relativity shakes a magnet
Using GaMnAs, researchers have demonstrated a new principle for magnetic recording
The research group of Jairo Sinova, a professor at the Institute of Physics at Johannes Gutenberg University Mainz (JGU), in collaboration with researchers from Prague, Cambridge, and Nottingham, have predicted and discovered a new physical phenomenon.
They have found a way that allows you to manipulate the state of a magnet by electric signals.
Current technologies for writing, storing, and reading information are either charge-based or spin-based.
Semiconductor flash or random access memories are prime examples among the large variety of charge- based devices. They utilise the possibility offered by semiconductors to easily electrically manipulate and detect their electronic charge states representing the ‘zeros’ and ‘ones”.
The downside is that weak perturbations such as impurities, temperature change, or radiation can lead to uncontrolled charge redistributions and, as a consequence, to data loss. Spin-based devices operate on an entirely distinct principle.
In some materials, like iron, electron spins generate magnetism and the position of the north and south pole of the magnet can be used to store the zeros and ones. This technology is behind memory applications ranging from kilobyte magnetic stripe cards to terabyte computer hard disks. Since they are based on spin, the devices are much more robust against charge perturbations.
However, the drawback of current magnetic memories is that in order to reverse the north and south poles of the magnet, i.e., flip the zero to one or vice versa, the magnetic bit has to be coupled to an electro-magnet or to another permanent magnet. If instead one could
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