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.
Results
Showing 1 to 20 of 39 for “"SMALL DIMENSIONS"”.
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Determinação das características dinâmicas das estruturas através de subestruturação e redução de graus de liberdade
… leads to an excellent numerical model, with small dimensions, suitable for determinating the dynamic response of structures, in the case that its response has the participation of only the first vibrations mode.
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Development of folding three-wheeled wheelchair frame for the Developing World
… for the three-wheeled wheelchair that folds into small dimensions similar to a traditional four-wheeled wheelchair.
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Scanning Probe Microscopy of Biomaterials and Nanoscale Biomechanics
… drag forces on the cantilever. Utilizing the small dimensions of a nanoneedle, the new method presented in this dissertation resolves the complications by keeping the cantilever outside of the liquid and using a nanoneedle attached to the AFM probe as the sensing element in liquid. It was …
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Body monitoring system
… capability of the system. In addition, given the small dimensions and cost of both the FPGA and sensors an inexpensive, small, portable and non-invasive monitoring device can be created.
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Development and Characterization of Controlled Drug Delivery Using Nanoparticles
… in nanometer-sized particles. Due to their small dimensions the particles could permeate through cells and tissues and even through the blood brain barrier. The anti-cancer drug Doxorubicin was encapsulated into biodegradable Poly (DL-lactideco- glycolide) (PLGA) nanoparticles by simple …
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Efficient power coupling to waveguides in high index contrast systems
… used to guide light on a chip because they have small dimensions, low scattering loss, and can be fabricated with silicon-based technology. With more components on a chip, we need to develop novel technologies to seamlessly route the optical signal from one waveguide to multiple waveguides …
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Estudo de sensor de campo magnético baseado em fibra óptica com rede de Bragg e Filme Fino de Terfenol-D
… once they are electromagnetic imunes, small dimensions and intrinsically electrically insulated. The goal of this work is the production of a magnetic field sensor based on an optical fiber with a Bragg grating inscribed and coated with a Terfenol-D magnetostrictive thin film. When an …
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Dynamics of sliding mechanisms in nanoscale friction
… laws of friction are inappropriate due to the small dimensions of the sliding elements and the lack of excessive plastic deformation. This thesis presents a theoretical investigation of friction at the sliding interface by Molecular Dynamics (MD) simulations of ideal Lennard-Jones solids. The …
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Development of wideband phased array antenna
… great advantages due to its simple designs and small dimensions working with c-band application. The antenna has been fabricated using FR-4 substrate and tested using network analyzer which has range between 3GHz to 9GHz at the radio frequency (RF) laboratory. Simulation result for wideband 4-8 …
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Demonstrating Reflectarray Behavior At Infrared
… SMIRs should be cheaper to fabricate, have a smaller physical footprint, allow for utility stacking, and encourage direct integration of aberration correction. To demonstrate the feasibility of utilizing reflectarray technology at infrared (IR), a simple SMIR proof of concept has been …
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Chemical vapor deposition and functionalization of fluorocarbon-organosilicon copolymer thin films
… on substrates with complex topographies and small dimensions. Fluorocarbon-organosilicon copolymers have been synthesized by hot-filament CVD, a thermal CVD technique. Control over deposition rate and chemical structure is achieved by precursor choice and variation of filament temperature. …
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Reinforcement learning based control for arrays of point absorber wave energy converters
… energy converters. These are devices that have small dimensions compared to the incident wavelength, and are axisymmetric in design. In most cases, energy is primarily associated with heave motion. A standard point absorber design was modelled with a PTO that reacted against the seabed. Wave …
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Laser welding of metallic glass to crystalline metal in laser-foil-printing additive manufacturing
… has been traditionally limited to parts with small dimensions and simple geometries, due to the requirement of fast cooling during the conventional process of casting. In addition, joining metallic glass to crystalline metal is of interest for many applications that require locally tailored …
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Heterogeneidade morfológica escapular e umeral em micromamíferos terrestres (Rodentia: Sigmodontinae): relações com as estratégias de uso dos habitats
… of habitat use form. Twenty-eight scapular dimensions and seven humeral dimensions were taken. The analysis of the correct allocation of the habitat use categories were evaluated by Discriminant Function analysis. The design of the same structures is involved in the mechanics of the …
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An investigation into controlling the growth modes of ferroelectric thin films using pulsed laser deposition and RHEED
… for tunable microwave applications, the reduced small dimensions leading to low tuning voltages. The incipient ferroelectric strontium titanate is an ideal solution for tunable microwave devices, particularly in conjunction with high temperature superconductors. It has no spontaneous polarisation …
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Reconfigurable neural probes for chronic electrical recording
… into fresh tissue. It is hypothesized that small tip dimensions (10-20 [mu]m) should prevent the formation of an additional glial sheath post-deployment and thus enable chronic recording. Four successive generations of devices were fabricated, characterized in benchtop tests, and …
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Reactive and interactive architectural form : a design exploration
… transition between singular public buildings and small repetitive residential buildings. The thesis is the design a public building that attempts to connect. through its form. with the residential fabric. and in a similar manner as the pedestrian parkway is an extension of backyards and becomes a …
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Glucose monitoring measuring blood glucose using vertical cavity surface emitting lasers (VCSELs)
… proposed. VCSELs are semiconductor lasers with small dimensions and low power consumption, which makes them suitable for implants. VCSELs provide higher signal-to-noise ratio as they have high power spectral density and operate within a small spectrum. In the current research, experiments were …
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Continuous synthesis of iron and aluminium-based nanoparticles
… to their bulk counterparts, owing to their small dimensions. Thus, plenty of new and exciting applications leveraging these properties have been proposed, such as drug delivery, MRI contrast agents, plasmonic catalysis, etc. However, large scale production of nanomaterials remains …
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Probing extraordinary nanoscale energy transfer using bimaterial microcantilevers
… bulk counterparts because the characteristic dimensions of nanostructures are often comparable with the wavelength or the mean free path of energy carriers such as photons, phonons and electrons. Due to the small dimensions, probing energy transfer at the nanoscale is extremely challenging. By …
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