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 27 for “"Nano-structure"”.
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Computational modeling of intrinsic dissipation in nano-structure
… different mechanisms of intrinsic dissipation in nano-electro mechanical systems (NEMS). We, first, use molecular dynamics (MD) simulation and gain an understanding of the underlying loss mechanisms. Using insights from the MD simulation, a multi-scale method to model intrinsic damping is …
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Silicon nano-structure fabrication and application for surface-enhanced Raman spectroscopy
… fabrication of black silicon with slanted nano-pillar array on both planar and 3D micro- and mesoscale structures produced by a high-throughput lithography-free oblique-angle plasma etching process. Nano-pillars with gradual change in height were created on the same piece of silicon. The …
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Nano Structure and Novel Charging Materials of the Small Molecule Based OLED Devices
… process of fabricating a conventional bilayer-structured small molecule based Organic Light Emitting Diode (OLED) device by vacuum thermal deposition technology using a Kurt J. Lesker deposition machine. The system was calibrated carefully by determining the tooling factor of all the materials …
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Effects of micro- and nano-structure on the deformation response of a Ag60Cu40 lamellar and rod-in-matrix eutectic alloy
… or unidirectional reinforcement-in-matrix micro-structure. Specimens of each micro-structure type were studied under quasi-static and dynamic loading conditions. The first part of this work focuses on the study of the material with a multidirectional lamellar structure. Materials produced with …
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Novel Engineered Nanostructured Complex Oxide for High Temperature Thermoelectric Power Generation
… a significant contributor to US energy infrastructure, it is essential first to foster improvements in high performance thermoelectric materials. They must possess not only a high conversion efficiency, but also need be composed of nontoxic and abundantly available elemental materials having …
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Structured surfaces for hemocompatibility
The rise of micro- and nano-technologies has brought to light intriguing examples of scale-driven performance in a diverse array of fields. The quest to create highly hydrophobic surfaces is one such field. The application of this new generation of hydrophobic surfaces, however, has not received …
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Graphene Nano-Composites For Hypervelocity Impact Applications
… research introduces new procedures to produce a nano-composite material with mortar-brick nano-structure inspired from nacre. Nacre-like composites were successfully manufactured, based on three host polymers, with a wide range of graphene concentrations. The manufactured exfoliated graphene …
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Cross linked sulphonated poly (ether ether ketone) for the development of polymer electrolyte membrane fuel cell
… water in the equilibrated membranes and the nano-structure present was comparable to that of Nafion. Cross linking improved the chemical stability of PEMs in particular in methanol solution.The measurement of power output and energy efficiency suggested that the cross linked PEMs produced are …
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Single-molecule study of the DNA helicase regulating genomic stability
… is a prototypical translocating motor of which structure and kinetics are heavily studied for its kinetic mechanism. Utilizing the persistent reeling-in activity of PcrA, we conducted heterogeneity-free analysis and identified that the fundamental unit of translocation kinetics is a ‘one …
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Synthesis and Characterization of Polymer Composites Containing Aligned Conducting Polymers and Carbon Nanotubes
… (PEDOT) and creating a composite with carbon nanotubes to control the mobility and hence the electrical conductivity of the thin films. Aligned PEDOT-carbon nanotube composite thin films were fabricated and characterized to study both the alignment of the polymer chains and change in their …
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Nanostructured diamond-like carbon by dual pulsed laser ablation-pulsed gas feeding
… sulphide for IR windows. In the present work nano-structure diamond-like carbon was deposited at room temperature by Pulsed Laser Ablation in a methane atmosphere on corning glass and silicon substrate. The structures of Diamond-like carbon film such the surface morphology and the composition …
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Trigger-responsive nanomedicines through controlled chemistry
… prodrug platform to address the nanoparticle (NP) formulation issue in cancer therapeutics. By designing a trigger-responsive camptothecin (CPT) prodrug structure, it was demonstrated for the first time that a small molecule prodrug could be encapsulated in PEGylated nanoparticles …
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Design, fabrication and characterization of resonant waveguide grating based optical biosensors
… detection limit down to single molecule. Optical nanostructures, specifically the resonant waveguide grating (RWG) and nano-ribbon cavity based biodetection are promising in this context. The main element of this dissertation is design, fabrication and characterization of RWG sensors for different …
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Herstellung und Charakterisierung von Nanostrukturen auf der Basis von II-VI-Materialien mittels der Schattenmaskentechnologie
… der an seiner Spitze die Ausdehnung einer Nanostruktur hat. Im Rahmen dieser Arbeit gelang es erstmals mittels der Schattenmaskentechnologie eine ZnSe-Draht-Struktur herzustellen, deren Ausdehnung an der Spitze nur noch 25~nm beträgt. Da dieses Verfahren erstmals zur Herstellung von …
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Modification of polymer surfaces to aid the attachment of cells derived from bone.
… surface state i.e. chemistry, energy, micro- and nano-structure. Hence, controlling surface properties is an integral area of biomaterials research. This thesis examines the use of UV/ozone oxidation treatment to improve the biological response to PS and PE by the addition of polar oxygen groups, …
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Application of novel gate materials for performance improvement in flash memory devices
… of carbon. The formation of silicon carbide nano-structure is responsible for the band structure change. Adoption of the carbon doped polysilicon floating gate will result in little process modification to the current technology, and is an effective and simple solution for floating gate-type …
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Dynamic Plasmonic Metasurfaces in the Visible Spectrum
… of incoming electromagnetic radiation. Nano-fabrication advancements have resulted in the fabrication of the building blocks of such metasurfaces at nano-scale dimensions, allowing the surfaces to interact with visible light, opening up applications in visual displays. As pixel sizes …
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Design, Synthesis and Characterization of Porous Silica Nanoparticles and Application in Intracellular Drug Delivery
Nanoparticle mediated drug delivery approaches provide potential opportunities for targeting and killing of intracellular bacteria. Among them, the porous silica nanoparticles deserve special attention due to their multifunctional properties such as high drug loading, controlled drug release and …
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Une biocapteur à base de résonance de plasmons de surface intégré monolithiquement avec une source d'excitation
Le champ biomédical n’a pas échappé à l’évolution de la technologie, elle cherche aussi à intégrer plusieurs fonctions dans un espace restreint. Un des points forts du développement est la massification de points de service, afin d'obtenir un diagnostic rapide des maladies. Le diagnostique …
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