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 17 of 17 for “"Nanomagnets"”.
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3D assembly and actuation of nanopatterned membranes using nanomagnets
… 3D nano-assembly based on the interactions of nanomagnets has been developed. Arrays of nanopatterned magnetic material are integrated onto thin-film membranes. It is shown theoretically and experimentally that separate arrays of nanomagnets attract and self-align when brought into close …
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Alignment and actuation of compliant nanostructures and diffractive optics by inter-nanomagnet forces
… method to stretch flexible nanostructures by nanomagnets interaction forces. We discuss the ability of different types of nanomagnets to distort several types of structures in two different cases. In the first, this method is applied for precise self-alignment of nanomembranes with …
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Fabrication and characterization of nanostructured magnetic particles for applications in data storage
Arrays of nanostructured magnetic particles ('nanomagnets') have potential applications in ultra-high-density data storage devices and dynamic magnetic memories, and are model systems for the study of magnetic phenomena at deep sub-micron length scales. We use interference lithography to pattern …
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Design and Investigation of Genetic Algorithmic and Reinforcement Learning Approaches to Wire Crossing Reductions for pNML Devices
… binary data in the polarization of single-domain nanomagnets and performs operations via fringing field interactions. Currently, there is no complete top-down workflow for pNML. Researchers must instead simultaneously handle place-and-route, timing, and logic minimization by hand. These tasks …
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Fabrication, characterization, and micromagnetic analysis of lithographically defined particle arrays for applications in data storage
… used for determining the optimum spacing between nanomagnets.
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Investigating and Enhancing Spin Reversal Barriers in Dinuclear 4f Single-Molecule Magnets and the Ultimate Shift to Mononuclear 3d Complexes
… quite versatile and promising, a new branch of nanomagnets is currently being pursued: mononuclear 3d complexes as SMMs. The advantages of 3d metals include high anisotropy per ion, low spin (as anisotropy decreases with increasing spin), well-understood electronic structures and clear …
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Study of thermal kinetics in artificial spin ice systems
Artificial spin ice is a two-dimensional array of nanomagnets fabricated to study geometric frustration, a phenomenon that arises when competing interactions cannot be simultaneously satisfied within the system. While the ground states of these artificial systems have been previously studied, this …
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Computer simulation studies of magnetic nanostructures
… memory (MRAM), and other novel devices. For nanomagnets the geometric shape of the object becomes more important than other factors such as magnetocrystalline anisotropy . the smaller the object, the more strongly the shape anisotropy affects the hysteresis loop.<br/><br/>We investigate the …
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Energy efficient hybrid computing systems using spin devices
… lateral spin valves (LSV) involve switching of nanomagnets using spin-polarized current injection through a metallic channel such as Cu. Such spin-torque based devices possess several interesting properties that can be exploited for ultra-low power computation. Analog characteristic of spin …
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Spin coherence and optical properties of alkali-metal atoms in solid parahydrogen
… phosphorus donors in silicon, and molecular nanomagnets are some of the leading examples of the latter case. In this thesis, I will discuss development of a system consisting of trapped alkali atoms in a cryogenic parahydrogen solid as a candidate system for the aforementioned applications. …
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Hybrid spintronics and straintronics: An ultra-low-energy computing paradigm
… of two-phase multiferroic single-domain nanomagnets can be switched very energy-efficiently, more so than any device currently extant, leading possibly to new magnetic logic and memory systems which might be an important contributor to Beyond-Moore's-Law technology. A multiferroic …
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Ceramic nanostructures for block copolymers
… dots/cm2 or templates for the next generation of nanomagnets can be produced. In addition to these applications, it is envisioned that these structures can be used as photonic band gap materials, high temperature membranes and low dielectric constant materials. Specifically, the formation of both …
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Nanostructured magnetic materials for integrated magnonic devices
… comprising patterned arrays of magnetostrictive nanomagnets embedded in piezoelectric heterostructures, generate multimode microwave frequencies through the phonon-magnon coupling. Static magnetic studies elucidate various magnetization reversal processes within the nanowire and nanodot arrays, …
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Confinement-mediated accumulation and collective dynamics of microswimmers
… (McMaster University). These bacteria synthesize nanomagnets in their cytoplasm and align passively with external magnetic fields as they propel by rotating their back flagellum, and therefore belong to the class of biased pusher swimmers. We investigate the dynamics of dense suspensions of such …
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Tunable High-Field/ High-Frequency ESR and High-Field Magnetization on Single-Molecule Clusters
In this work, low dimensional iron group clusters have been studied by application of high magnetic fields. The magnetization has been probed with an MPMS as function of temperature and field. The combination with pulse field measurements up to 52\,T allowed determination of the magnetic exchange …