Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"Optical data storage"”.
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Optical engineering of parallel optical data storage
Volume holographic data storage uses the superposition of image holograms in a suitable medium to pursue large storage capacity and high readout rates. The holographic method of structuring the medium with data, and subsequent readout of those data structures, relies on an optical system with two …
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Laser assisted nano-optics processing in optical data storage
Optical lithography techniques have many advantages over other lithography methods although its resolution is limited by optical diffraction. Two optical lithography techniques, microlens array laser patterning and near-field scanning optical lithography, are presented to show their capabilities in …
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Design of Multilayer Optical Media: Organic Photovoltaics and Optical Data Storage
The optical properties of one-dimensional layered materials provides a wealth of interesting phenomena. Fine control of the optical properties of the constituent materials and the thicknesses of each layer allows for sophisticated design of useful optical devices. Optical devices based on …
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Stresses, viscous flow and crystallization kinetics in thin films of amorphous chalcogenides used for optical data storage
Modern computers usually contain several kinds of data storage devices. Very frequently magnetic and optical storage media are being used. The latter have become of great interest especially throughout the last decade: nowadays a significant amount of data is being stored on compact discs (CDs) and …
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A spectroscopic study of Nd3+ and Pr3+ doped fluorozirconate glass
… consideration given to applications in medicine, optical data storage and printing, communications and research.
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Phase and Polarization Modulations based on LCOS SLM
… in glass has made it possible to store data in fused silica. The technology of 5D optical data storage in transparent materials paves a promising way to almost unlimited lifetime data storage for future cloud. The phase-only SLM has already shown its potential for this application in …
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Application of p electron theory to predict new materials for rewritable optical recording
… is distinguished from the difference in the optical properties of the two states. Until now most alloys utilised in optical data storage are based on ternary GeSbTe and the quartenary AgIn-Sb2Te alloys. To ensure that optical data storage remains competitive, new alloys with superior …
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Controlling Self -Assembly of Anisotropic, Rod-Like Polypeptides on Solid Surfaces
… to applications in piezoelectric devices, optical data storage, biological mimicry, and nonlinear optics. Our work has centered on (1) novel syntheses and characterization of polypeptides that can spontaneously assemble onto model surfaces, (2) molecular design of hinged polypeptides that …
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Mechanical stresses upon phase transitions
… studied. Transition metal oxides are used as optical coatings, hard coatings, etc., phase change films find application in optical data storage technology, while optically switchable coatings have been applied in switchable windows, rear-view mirrors etc. For all materials it applies that they …
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Investigating New Guaiazulenes and Diketopyrropyrroles for Photonic Applications
… order to understand their charge transport and optical properties for use in organic electronic devices, fluorescence bioimaging, sensors, and 3D optical data storage (ODS), among others. As a result, several molecular building blocks have been designed, allowing new frontiers to be realized. …
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Probing ultra-subwavelength inhomogeneities embedded within dielectric targets using photonic nanojets
… spectroscopy, nanotechnology, microscopy, and optical data storage discs. Conventional objective lens based optical systems have a fundamental limit on the best possible resolution of about 200 \u03b7m due to the diffraction of light as it propagates into the far-field. There already exist …
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Molecular Structure-nonlinear Optical Property Relationships For A Series Of Polymethine And Squaraine Molecules
… imaging, three-dimensional microfabrication, optical data storage and optical limiting, have motivated researchers to find novel materials exhibiting strong 2PA. Organic materials are promising candidates because their linear and nonlinear optical properties can be optimized for applications …
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Numerical Study of Plasmon Resonances in Nanoparticles
… nano-lithography, biosensor, metamaterial and optical data storage. Consequently, the understanding of plasmon resonances in nanoparticles has both fundamental and practical significance. In this dissertation, a new numerical technique to fully characterize the plasmon resonances in …
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Environmentally focused patterning and processing of polymer thin films by initiated chemical vapor deposition (iCVD) and oxidative chemical vapor deposition (oCVD)
… templates to create bifunctional patterns for optical data storage applications. Finally, UV and e-beam lithography were used to pattern covalently tethered vinyl monolayers for resist-free patterning of iCVD and oCVD polymers, using environmentally innocuous solvents.
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Optische Eigenschaften von Phasenwechselmaterialien für zukünftige optische und elektronische Speicheranwendungen
… applications. They are used in re-writable optical data storage and will be in the near future also used in electrical data storage. The alloys, employed up to now in optical data storage are developed empirically. For future applications, especially electrical data storage, it will be …
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Chalkogenidlegierungen für optische und elektronische Speichermedien
Phasechange alloys are commonly used in optical data storage. Within the next few years an additional application of these alloys is expected to be in solid state memories. In contrast to their widespread use, an understanding of the underlying mechnisms is still incomplete. In this work the …
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Slow and fast light by spectral hole-burning in the solid state
… years because of potential applications in optical data storage, optical switching, quantum data processing and pulse regeneration. Slow and fast light can be achieved in materials that have very large normal or anomalous dispersion. In this thesis, methods that can be used to generate …
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modeling and application of nonlinear metasurface
… low-profile lens, filter, reflector or other optical devices. Nonlinear metasurfaces‒combine the properties of natural nonlinear medium with novel features such as negative refractive index, magneto-electric coupling‒provide novel nonlinear features not available in nature. Compared to …
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Rekristallisationskinetik von Phasenwechselmedien
… and crystalline phase. This is employed for optical and electronic data storage where small volumes are switched between the two different phases. For the amorphization the material is locally heated above the melting temperature and successively quenched into the amorphous phase. A …
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Combinatorial material synthesis applied to Ge-Sb-Te based phase change materials
… amount of digital information requires higher data- storage capacities and transfer rates. Consequently, there is a need for a continuous improvement of the media concept and design. Phase change recording technology offers attractive features for erasable data storage with high density. …
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