نتایج جستجو برای: optical storage
تعداد نتایج: 446463 فیلتر نتایج به سال:
We propose a novel cell manipulation method of Integrated Optical Tweezers (IOT) with microtools made of negative photoresist, SU-8 (MicroChem). This microtool is made by photolithography and hence it has complex shape. IOT is a novel optical tweezers integrating Time-Shared Scanning (TSS) [1] for high speed manipulation of a few objects and Generalized Phase Contrast (GPC) [2] for trapping a l...
The low-pass nature of the optical systems (both coherent and incoherent) used for volume optical storage results in the presence of intersymbol interference (ISI) at the output of these systems. Since ISI can seriously degrade retrieved data fidelity, we consider the design of linear, minimum-mean-square-error equalizers for two-dimensional finite-contrast optical ISI channels. Signal models a...
Gartner defines mobile data protection (MDP) products and services as software security methods that enforce confidentiality policies by encrypting data, and then defending access to that encrypted data on the primary and secondary storage systems of end-user workstations. These storage systems include the primary boot drive of a workstation and removable devices used for portability. Storage t...
Random phase encoding is a unique technique for volume hologram which can be applied to various applications such as holographic multiplexing storage, image encryption, and optical sensing. In this review article, we first review and discuss diffraction selectivity of random phase encoding in volume holograms, which is the most important parameter related to multiplexing capacity of volume holo...
With the development of information technology, quick rate of data transfer and high capacity of data storage are expected for advanced recording media. Although data storage media and technique have been developed from soft discs, hard disk, CD-ROM and DVDROM to multi-layered blue-ray discs, undoubtedly, holography is one of the most fascinating and attractive techniques. As shown in Figure 1,...
Quantum memory is an essential component for quantum computation. Electromagnetically induced transparency (EIT) [1] has been proposed as a possible scheme for achieving quantum memory via the manipulation of dark-state polaritons [2]. Experiments on the slowing of optical pulses through an atomic medium via EIT have been reported [3]. There have also been many experiments studying the storage ...
The development of suitable recording media for applications such as holographic optical elements and holographic data storage are of significant research and commercial interest. In this paper, a photopolymer material developed by Bayer MaterialScience is examined using various optical techniques and then characterised using the Non-local Photo-polymerization Driven Diffusion model. This mater...
We report a means to detect deeply subwavelength pits in optical data-storage media by employing the recently observed giant backscattering perturbation phenomenon of the photonic jet. We conducted microwave experiments with dimensionally scaled-up pits and lands in a simulated optical data-storage device. These measurements were backed up by three-dimensional finite-difference time-domain comp...
Photopolymers have proved to be useful for different holographic applications such as holographic data storage or holographic optical elements. However, most photopolymers have certain undesirable features, such as the toxicity of some of their components or their low environmental compatibility. For this reason, the Holography and Optical Processing Group at the University of Alicante develope...
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