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 “"self alignment"”.
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Precision Self -Alignment Techniques for Optoelectronic Integration
… techniques used for the integration and precise self-alignment of optoelectronic components are presented. State-of-the-art self-alignment accuracies have been achieved using solder bump arrays for component alignment and etched V-grooves for optical fiber alignment. The self-alignment potential …
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A Novel Covalent Nanoglue and Whole Wafer Self-Alignment Based Upon Self-Assembled Monolayers.
North Carolina State University Theses Physics.
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Expert-free eye alignment and machine learning for predictive health
… a system that includes a novel method for eye self-alignment and automatic image analysis and evaluate its effectiveness when applied to a case study of a diabetic retinopathy screening program. This work is inspired by advances in machine learning that makes accessible interactions previously …
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Alignment and actuation of compliant nanostructures and diffractive optics by inter-nanomagnet forces
… In the first, this method is applied for precise self-alignment of nanomembranes with applications in three-dimensional nanostructures manufacturing as well as distortion and patterning errors correction in a promising unconventional way. The second application addressed in this work shows the …
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A design for self-assembling robots in a system
… control, and application for a novel concept of self-assembling robots in a system. The system is composed of multiple cooperative robots that are designed to self-assemble in a system, execute manipulative tasks, and self-repair, all without human assistance. The self-assembling feature employs …
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Techniques in Kalman Filtering for Autonomous Vehicle Navigation
… that the coupling of sensors, constraints, and self-alignment techniques provide an accurate solution to the navigation problem for an autonomous vehicle. Filter divergence is discussed during times when the states are unobservable. Post processed data is analyzed to demonstrate performance …
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3D assembly and actuation of nanopatterned membranes using nanomagnets
… that separate arrays of nanomagnets attract and self-align when brought into close proximity. This provides a useful mechanism for 3D nanofabrication because it allows higher positional tolerances as the nanomagnets provide the fine alignment. The features on the membrane can first be patterned …
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Nanostructured Origami (TM) : stress-engineering of nanopatterned membranes to produce three-dimensional structures
… with new 3D optical patterning and magnetic self-alignment techniques. These practical advances open the way to designing a variety of 3D devices which may have broad applications in computing, communications and detection.
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Design, fabrication and testing of a lateral self-cleaning MEMS switch
… This switch design is characterized by the self-alignment of the contact surfaces, self-cleaning of the particles generated from asperity fracture and deformation, and the anchoring method of the metal contacts in the micro switch structures and the large stroke piezo-actuation by the strain …
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Self-assembly of amino acids on noble metal surfaces : morphological, chemical and electronic control of matter at the nanoscale
Designing novel nanostructures which exploit the self-assembly capabilities of biomolecules yields a promising approach to control matter at the nanoscale. Here, the homochiral molecular self-assemblies of the methionine and tyrosine amino acids on the monocrystalline Ag(111) and Cu(111) surfaces …
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Knee joint contact stresses : the influence of deformity and muscle activity
Studies have shown that the alignment of the knee in the coronal plane has a significant effect on the joint contact stress. However, gait analysis demonstrated that factors other than alignment contributed significantly to the outcome of corrective surgery. It was therefore hypothesized that …
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In-fiber Optical Devices Based on D-fiber
… of reasons including low loss, high efficiency, self-alignment, light weight, multiplexibility, and resistance to electromagnetic interference. This work details how D-fiber can be used as a platform for a variety of devices and describes the creation and performance of two of these devices: an …
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Dynamics of Micro-Particles in Complex Environment
… are studied using numerical simulations. The self-diffusiophoresis of JCMs in a confined environment is studied first. Overall, the translocation of a JCM through a short pore is slowed down by pore walls, although the slowdown is far weaker than the transport of particles through similar …
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Development of an experimental methodology for appraising the dynamic response of tethered tidal turbines
… costs and the capability to permit the turbine's self alignment to the flow regime. However, because of the uncertainties over their dynamic behaviour, it was considered that an analysis of response in a range of conditions was essential before they could be considered as practical station keeping …
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Device design and process technology for sub-100 nm SOI MOSFET's
… were fabricated based with this technique, and a self-alignment scheme for alignment of the bottom-gate which to the top-gate was explored.
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Novel Thin Film Nanogap Device Fabrication And 3D Integration Enabled By Adhesion Lithography
… nanoscale patterning for LAE processes. It is a self-alignment process that makes use of the characteristics of the self-assembled monolayer (SAM) on specific materials to alter their surface energy, which then allows the direct removal/peeling of other materials overlapped with the SAM-treated …
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Novel mechanical alignment and component fabrication for wavelength-selective optical switches
… This thesis develops a range of novel alignment and fabrication techniques necessary to construct an experimental two-dimensional WSS system. Where necessary these techniques are further developed to enable the cost-effective volume manufacture of commercial switching products based on …