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 75 for “"Nano-Structures"”.
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Simulations of ferromagnetic nano structures
The magnetic properties of nanometre-scale structures are of fundamental scientific interest and have the potential to play a major role in future data storage technologies. In particular, arrays of small magnetic elements, also called bit-patterned media, are one of the most promising candidates …
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Nonlinear optical properties of nano structures
Nonlinear optical properties of nanoscale semiconductors had been a topic of intense research in recent years in attempts to realize all-optical communication systems. These semiconductor nanoclusters, in the range of 1-100nm are hosted in a dielectric material and are considered as a particular …
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Novel Three-Dimensional Silicon Carbide Nano-Structures
Silicon carbide nanotubes have been found to have the same excellent mechanical properties in extreme thermal and oxidative environments as bulk silicon carbide, but with the resiliency similar to carbon nanotubes due to quantum size effects. The simplest, most cost efficient method to synthesize …
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Active Micro-/Nano-Structures for Electromechanical Actuation
The design and implementation of micro-/nano-structures as active components has become an increasingly popular scheme for the development of electronic devices and systems in pursuit of unprecedented device performance and unique system functionality. In particular, cooperative actuation of active …
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Control of Exciton Photon Coupling in Nano-structures
… parts: light-matter interaction in microcavity structures, direct dipole-dipole interactions, and plasmon-exciton interaction in metal-semiconductor systems. </p> <p>In the microcavity structures, the light-matter interactions become significant when the excitonic energy is in resonance with …
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Thin film magnetics for integrated magnetic nano-structures
The past decades have seen a surge in demand for highly miniaturised magnetic components which has been enabled by use of power circuitry high switching frequencies which require energy storage on a smaller scale. The optimal scale of this integration will be achieved with the complete integration …
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Enhancement of superconductivity in Magnesium Diboride nano-structures
… in the growth of thin films and grains at the nanoscale has allowed to measure in certain materials critical temperatures that differ from the bulk values. At the same time these results have motivated theoretical studies that try to reproduce them using first-principles calculations and …
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Field emission of ZnO nano-structures produced by laser ablation
… for analysis of field enhancement factors from nano-material ZnO.
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Multi-Functional nano-structures in Nature: from optics to mechanics
… man-made materials because of the integration of structures from nano- to macro-scales. Biological and bio-inspired studies been attracting researchers in physics, biology, and engineering. However, such nanostructures are often studied in the context of a specific function by different …
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Carbon nanotube assisted formation of sub-50 nm polymeric nano-structures
… processing method was developed for sub-50 nm structures by integrating quantum dots (QDs) on patterned polymer substrates. Poly(styrene-alt-maleic anhydride) (PSMa) was prepared by the initiated chemical vapor deposition (iCVD) method, an alternative to spin-on deposition. The sub-50 nm PSMa …
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Ionic self-assembly of porphyrin micro-nano structures for solar hydrogen evolution
… project develops self-assembled porphyrin micro-nano structures and their metal nanocomposites for efficient solar H2 evolution. The project is composed of three inter-related tasks. The first task is to develop the synthetic methods for preparing the binary porphyrin micro-nano structures by …
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Femtosecond laser micro-machining and consequent self-assembled nano-structures in transparent materials
In this thesis we have reported novel developments in the field of femtosecond laser micro-machining within the bulk of transparent materials. Thanks to its unique properties, the femtosecond laser writing technique offers the potential for realizing three-dimensional multi-component photonic …
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Steady and Unsteady Thermo-Strucural Simulation of Thermally Actuated Micro- and Nano-Structures
… provides a thermo-structural simulation for nano-scale and micro-scale structures with pinned and fixed boundary conditions which are either thermally positioned, buckled, or actuated. The study begins with simulating a pinned-pinned beam in micro-scale and nano-scale. The steady state …
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Fabrication and Characterization of Tunable Conducting Polymer Micro- and Nano-Structures for Bioelectronics
… the properties of the resulting CP films or microstructures. The first project elucidated the quantitative relationships between electrochemical deposition parameters and the surface nanostructure of poly(3,4-ethylenedioxythiophene) (PEDOT) and poly(pyrrole) (PPy) films doped with poly(styrene …
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Non-linear optical properties of semiconductor nano-structures for slow light and wavelength conversion
The use of semiconductor nanostructures for all-optical signal processing is investigated. We first examine theoretically the utilization of quantum dots for wavelength conversion via four-wave mixing. Our results show that quantum dots with only a single bound state are more efficient than both …
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Fabrication of silicon-based nano-structures and their scaling effects on mechanical and electrical properties
Silicon-based nanostructures are essential building blocks for nanoelectronic devices and nano-electromechanical systems (NEMS), and their mechanical and electrical properties play an important role in controlling the functionality and reliability of the nano-devices. The objective of this …
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Novel functionalised biodegradable polymeric micro- and nano-structures for tissue engineering and drug delivery applications
… preparation of well-defined polymeric micro- and nano-structures for use in biomedical applications. Each of the polymers in this work was prepared using reversible addition fragmentation chain-transfer (RAFT) polymerisation or a combination of ring opening polymerisation (ROP) and RAFT …
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