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 351 for “"tunability"”.
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Tunability of Electrospun Scaffolds for Tissue Engineering
… material. This thesis aims to demonstrate the tunability and control of electrospun gelatin scaffolds to make them viable for use in tissue regeneration by altering grounded collector geometry and thus the electric field that nanofiber deposition follows. Previous electrospinning experiments …
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Viscoelasticity of vitrimers: tunability and applications of dynamic networks
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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Robustness and tunability in biological networks/ by Shankar Mukherji.
Cells face a core tension between studiously preventing change in certain properties from extrinsic perturbations while allowing other properties to be tuned. One way cells have resolved this tension is to utilize systems that are both robust and tunable. Systems can achieve this through network …
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Expanding the chemical tunability and precision of bottlebrush polymer synthesis
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Dynamic tunability enhancement of reflectarray antenna using non-homogeneous dielectric materials
… study provides a thorough investigation on the tunability performance of reflectarrays designed in X-band frequency range. The objective of this work is to demonstrate the functionality of an active reflectarray antenna with optimized loss performance and enhanced dynamic phase range. Different …
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Orbital Angular Momentum Microlasers: From The First Demonstration To Ultrafast Tunability
Orbital angular momentum (OAM) carried by structured vortex light establishes a new information dimension, thereby promising high capacity optical communication and high performance computation in both classical and quantum regimes. Meanwhile, laser is the key driver in the field of optics and …
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The Self-Assembly, Optical Response and Stretch Tunability of Plasmonic Nanoparticle Monolayers
The optical properties of self-assembled plasmonic nanoparticle monolayers of varying den sities are explored. These particles are sensitive to changes in their local environment and proximity to other particles. By altering these factors, the appearance of nanoparticle assemblies is changed, …
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Bringing down barriers to the tunability, purity, and scalability of imogolite nanotubes
… imogolite nanotube growth, and improved tunability of nanotube physical attributes.
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ADVANCED MATERIALS DEVELOPMENT AND MANUFACTURING - DEVELOPMENT OF THERMALLY STABLE THIN FILMS WITH HIGH STRESS TUNABILITY
As Moore’s Law continues to push its limit, the semiconductor industry is heading towards 3D integrated circuits by stacking die or NAND cells vertically. The higher number of film deposition from NAND cell stacking result in higher compressive wafer bow of Production Silicon Wafers which is …
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Manufacturing and aerostatic tunability of opto-mechano-fluidic resonator and its application in viscosity sensing
Cavity optomechanics experiments parametrically couple the phonon modes and photon modes in microresonators and various optical systems have been investigated. However, because of the increased acoustic radiative losses during direct liquid immersion of optomechanical devices, almost all published …
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Operating Range of Aluminum - Gallium-Arsenide Quantum-Well Heterostructure Lasers: Tunability, Power Output, and High Energy Emission (Semiconductor, Optical, Diode)
A quantum-well heterostructure (QWH) is the most capable form of semiconductor laser. The quantum-size effect (QSE), inherent in a QWH laser, improves the device performance compared to conventional double heterostructure lasers. One advantage provided by the QSE is the increased possibility for …
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Hydrothermal Processing of Barium Strontium Titanate Composites on Printed Circuit Board for Thin Film Varactor Applications
… ferroelectric properties are lost, leading to no tunability and very low dielectric constant. The permittivity ranges from 30 to 55. Sol-gel derived powders are very reactive to the hydrothermal process. The resultant film permittivity is the highest, ranging from 200 to 260, but with a limited …
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Ion-exchanged metal-organic frameworks for industrially relevant catalysis applications
… (MOFs) offer a unique combination of synthetic tunability, structural uniformity, and site accessibility uncommon in conventional heterogeneous catalysts. As such, the inorganic nodes of MOFs provide a promising platform that can be engineered to promote challenging chemical transformations for …
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A tuneable quantum gas for matter wave interferometry and soliton experiments
… fields. In particular, we take advantage of the tunability of the interaction strength to implement experiments to study matter-wave interferometry and solitons.;In a first series of experiments, we employ a magnetic levitation scheme and the tunability of caesium BEC to measure micro-g …
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Strain-tuning of periodic optical devices : tunable gratings and photonic crystals
… this thesis, specific implementations of strain-tunability in two photonic devices will be discussed: the fundamental diffractive grating element, and a photonic band gap microcavity waveguide. For the first part, we demonstrate high-resolution analog tunability in microscale diffractive optics. …
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Custom mechanisms for tunable material deposition
… path placement of material with high levels of tunability through analog mixing, while the second explores do-it-yourself tool customization, compactness, portability and the possibility of fabrication node-to-node communication. Inspired by the silkworm's ability to spin highly sophisticated …
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Microwave Overlay Capacitor Fabrication on Printed Circuit Boards
… Tester was used to apply bias to the filters for tunability measurements. The structures were simulated using High Frequency Structure Simulator (HFSS), to provide a relationship between frequency shift and relative permittivity. The relative permittivity of the BST-COC films was 𝜀𝑟=11 at 1.98 …
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Engineering Topological Quantum Matter with Patterned Light
… light. We demonstrate the wide optical tunability of this system allows one to realize a wide variety of band properties. We show that these tunable band properties lead to exotic physics ranging from the topological transitions to the creation of nearly flat bands, which can allow the …
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Tunable Electronic Excitations in Hybrid Organic-Inorganic Materials: Ground-State and Many-Body Perturbation Approaches
… have more structural flexibility and thus higher tunability of their electronic properties compared to the 3D HOIPs. Motivated by a desire to demonstrate such flexibility and tunability, a series of 2D HOIPs with oligothiophene derivative as the organic cations and lead halide is investigated in …
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On-chip silicon based photonic structures : photonic band gap and quasi-photonic band gap materials
… a Si-based multi-channel optical filter with tunability, which is based on omnidirectional reflecting photonic band gap structure with a relatively large air gap defect. Using only one device, multi channel filter with tunability around two telecom wavelength 1.55[mu]m and 1.3[mu]m by …
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