Recently researchers from the University of California Riverside Burns School of Engineering and the Russian Academy of Sciences demonstrated a new type of holographic memory that combines the advantages of both magnetic data storage and wave-based information transfer to bring unprecedented possibilities to electronic devices. Data storage and processing capabilities. The holography technology is a kind of application field involving a very wide range of fields. It is a technology that records and reproduces the true three-dimensional image of an object using the principles of interference and diffraction.
It can bring unprecedented data storage and processing capabilities to electronic devices.
The new memory used in this study uses spin waves instead of beams. Spin waves are collective oscillation waves of spin electrons in magnetic materials and have many advantages. Spin wave devices are compatible with conventional electronic devices and can operate at shorter wavelengths than optical devices, making electronic devices smaller. And the amount of storage is greater.
General holography is based on the fluctuating nature of light, using the interference of waves between the target beam and the coherent background to form holograms, such as driver's licenses or security features on banknotes, but this is only a limited hologram. The first hologram was designed using an electron microscope in the 1940s. 10 years later with the laser, optical holograms have become commonplace. Since then, other fields have made great progress in the use of wave interference in the manufacture of holographic effects, including acoustic holography in seismic studies and microwave holography in radar systems. Holography is also considered to be a future storage technology. It can read and write large amounts of data in a highly parallel manner, making the device's data storage capabilities unprecedented.
The research director, Professor Alexander Khitun of the University of California Riverside Burns School of Engineering, has been working on spin-wave logic devices for more than nine years. Most of his initial research focused on the development of logic circuits based on spin waves, similar to those used in current computers. Last year, Alexander Khitun decided not to have his device replace the electronic circuitry of the computer, but to supplement the line or to help perform certain tasks such as image recognition, speech recognition, and data processing.
The experimental results show that it is feasible to use the current optical holography technology in the magnetic structure to create a hologram storage device. In the experiment, they used a bit-magnet oscillator holographic storage prototype device. A pair of magnets represent storage elements arranged at different locations on the magnetic waveguide. The spin wave propagating through the waveguide is affected by the magnetic field generated by the magnet. When the spin wave interference is applied, a clear picture is generated. The researchers can identify the magnetic state of the magnet. These are all done at room temperature.
"This result opens up a new area of ​​research that may have a huge impact on the development of new logic and storage devices," said Alexander Khitun.
Bearing housings are modular assemblies designed to make it easy to install bearings and shafts, while protecting bearings, extending their operating life and simplifying maintenance.
Housings are available in many sizes, and generally fall into five standard categories: split plummer (or pillow) block housings, non-split plummer block housings, flanged housings, take-up housings and two-bearing housings. These products can be designed to meet specific duty requirements such as load, speed and operating environmental conditions.
Non-standard bearing housing designs can also be supplied to particular customer requirements: for example, where special shaft centre heights, unusual sealing arrangements or non-standard materials of construction may be specified.
If ease of installation and maintenance are prime considerations, then split plummer block housings are an excellent choice as they not only accommodate pre-assembled shafts, but also simplify bearing inspections and maintenance as the shaft does not need to be disassembled. These units are designed for self-aligning ball bearings, spherical roller bearings and CARB toroidal roller bearings. Non-split plummer block housings are preferred when there are heavy loads acting in a direction other than toward the support surface. They are also used when the housing has to be mounted from the end of the shaft.
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