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 143 for “"3D structures"”.
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Sampling-based coverage path planning for complex 3D structures
… and well-understood. For threedimensional structures, however, few of the available heuristics succeed over occluded regions and low-clearance areas. This thesis makes several contributions to sampling-based coverage path planning, for use on complex three-dimensional structures. First, we …
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Design and fabrication of novel and functional 3D structures via proximity field nano-patterning
… to fabricate multi-dimensionally periodic micro-structures. Though a potent technique for 3D microfabrication that offers dual and superior advantage of scalable resolution and throughput, this technique has not seen broader adoption due to the lack of concerted design and fabrication strategies …
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SCL: A Lattice-Based Approach to Infer Three-Dimensional Chromosome Structures from Single-Cell Hi-C Data
… tools that can model the three-dimensional structures of chromosomes based on single-cell Hi-C data.</p> <p>We developed SCL (Single-Cell Lattice), a computational method to reconstruct three-dimensional (3D) structures of chromosomes based on single-cell Hi-C data. We designed a loss …
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Interactions of Anticancer Drugs With DNA Studied by High-Resolution NMR Spectroscopy
… transport proteins, e.g., P-glycoprotein. The 3D structures of 1:1 WP631/d(CGTACG)$\sb2$ and 1:1 WP631/d(CGJACG)$\sb2$ showed that the aglycone rings intercalate slightly shallower than those in the 2:1 DAU/d(CGTACG)$\sb2$ and the daunosamine moieties are elevated from the minor groove floor, …
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Three-dimensional (3D) electronics by compressive buckling process
… a 2D precursor to realize a sophisticated 3D electronic structure of a resistor, capacitor and transistor. Conventional microfabrication methods create 3D electronic components, and the electronic properties of the components are the same as those of conventional devices. 3D constant and …
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Three-Dimensional Passivated-Electrode Insulator-Based Dielectrophoresis (3D-PiDEP)
… devices in this work were created with a 3D mircofabrication technique, which we also developed as part of this project. The core process of the technique is the etching of 3D structures in silicon with a single plasma etch utilizing an effect known as reactive ion etch lag (RIE lag). …
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Magnetotransport Effects in Three Dimensional Nanocircuits
… In comparison to 2D computing devices, 3D structures can not only offer higher density and better device connectivity, leading to proposals such as using 3D racetracks for high density memory, but also provide access to 3D geometrical effects such as chirality and curvature, which may …
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Optimizing registration of complex vascular geometries
… imaging awaits methods to reconstruct precise 3D structure of lumen and implanted stent, and to track vascular responses to stent implantation over time in 3D. This thesis creates new methods for reconstruction and registration in 3D by melding disparate imaging modalities, coronary angiography …
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FastCaplet : an efficient 3D capacitance extraction solver using instantiable basis functions for VLSI interconnects
… wires. It is however quite inaccurate for full 3D structures, such as crossing wires in adjacent metal layers. For such cases electrostatic field solvers are required. Unfortunately standard field solvers are inherently very time-consuming, making them completely impractical in typical IC design …
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Assembling 3D MEMS structures by folding, aligning and latching 2D patterned films
… retro reflectors, micro-scale magnetometers, 3D microfluidic systems and 3D photonic crystals, require three-dimensional (3D) geometries for their functionality. In addition, 3D circuits have also emerged as a way of improving connectivity and reducing power dissipation in electronic chips. …
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Enhancing the fight against malaria : from genome to structure and activity of a G-protein coupled receptor from the mosquito, Anopheles Gambiae
… to GPCRs depends on the three dimensional (3D) structures of the receptors but to date no crystal structures of insect GPCRs are available. This work focused on building molecular models of AKHR from the genome of the malaria mosquito, identifying its binding site and studying the …
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Plasma Processing of Superconducting Radio Frequency Cavities
… surfaces to inner surfaces of three dimensional (3D) structures. The results could be applicable to a variety of inner surfaces of 3D structures other than SRF cavities. Understanding the Ar/Cl<sub>2</sub> plasma etching mechanism is crucial for achieving the desired modification of Nb SRF …
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Comb Polymer Architecture and Particle Size Effects on the Behavior of Biphasic Nanoparticle Inks for Direct -Write Assembly
… inks for direct-write assembly of fine-scale, 3D structures.
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Algorithms for single-view depth image estimation
… goal is to reconstruct the dense and complete 3D structures of the scene, given only sparse depth measurements. To this end, this thesis proposes three different algorithms for depth estimation. The first contribution is an algorithm for efficient reconstruction of 3D planar surfaces. This …
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Electromagnetic Control of Biological Assembly
… boundary, aerobic cellulose production in 3D structures is readily achievable. Five separate sets of experiments were conducted to demonstrate the assembly of nanocellulose by Acetobacter xylinum in the presence of electric fields in micro and macro environments. This work demonstrates a …
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Direct-Write Assembly of Three-Dimensional Polyelectrolyte Scaffolds, Inorganic Hybrids, and Photonic Crystals
… architecture are created by replicating 3D microperiodic polymer scaffolds assembled by direct ink writing. First, polymer woodpiles with a face-centered tetragonal geometry are fabricated by direct ink writing. Chemical vapor depositions of silica and germanium are then performed under …
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Predicting the beta-trefoil fold from protein sequence data
… β-trefoils, an important class of globular β-structures, in the Protein Data Bank with 92% specificity and 92.3% sensitivity in cross-validation. It is demonstrated that Wrap-and-Pack learns each of the ten known SCOP β-trefoil families, when trained primarily on β-structures that are not …
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Fabrication of tissue scaffolds using projection micro-stereolithography
… of building non-cytotoxic and highly complex 3D structures with microvasculature on the order of 20 um inner diameter. While extensive biological testing remains to be carried out, the built structures reveal much promise in PuSL as a method of tissue scaffold fabrication in terms of in vivo …
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Novel Photopolymers for Additive Manufacturing
Additive manufacturing or 3D printing is a process for fabricating 3D objects by adding successive layers of materials on top of each other. Among various 3D printing approaches, the photo-assisted additive manufacturing, which is commonly known as vat photopolymerisation, is extremely attractive. …
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Topology and Printing Orientation Optimization of Orthotropic Material for Additive Manufacturing
Mechanical properties of 3d printed polymers have witnessed remarkable improvements as a result of optimization in topology and raster orientation. This study proposes and evaluates a strategy to deal with stiffness maximization of structures in elastic region subjected to global volume and …
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