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 72 for “"substrate material"”.
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VUV 157nm F₂ laser irradiation of micro- and nano-scale particles
… is presented.Small particles of different materials and sizes, supported on polymeric substrates, are irradiated at a wavelength of 157nm. The silica particles are transparent to the 157nm radiation, which leads to a lens effect. The polystyrene, silicon carbide and silver particles are …
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Reentrainment of Submicron Solid Particles
… of particle size, flow rate, pulsation, particle/substrate material, and temperature on the short-term reentrainment of submicron particles. The particles tested are in the size range of 10-900 nm and are deposited by wetting the inside of capillary tubes with a liquid suspension. The tubes are …
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Product-market opportunities for FPL spaceboard II molded structural products
… most important to purchase decisions regarding substrate materials for the office furniture industry - the most likely target for introduction of Spaceboard II. A matrix-type decision model was then developed and illustrated which assists in selecting the most attractive product-market …
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Methodology, morphology, and optimization of carbon nanotube growth for improved energy storage in a double layer capacitor
… of carbon nanotubes (CNTs) on a conducting substrate for use as an electrode to improve energy density in a double-layer capacitor. The focus has been on several areas, such as substrate material, growth conditions, catalyst variations, and thin-film deposition techniques in order to achieve …
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Superconducting nanowire single-photon detectors on aluminum nitride photonic integrated circuits
… information processing. Among various waveguide materials, aluminum nitride (AlN) is a promising candidate because of its exceptionally wide bandgap, and intrinsic piezoelectric and electro-optic properties. In this Master's thesis, we developed a complete fabrication process for making …
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Tunneling Field-Effect Transistors for Low Power Logic: Design, Simulation and Technology Demonstration
… therefore improve the device performance. New substrate material germanium-tin (GeSn), which has small bandgap, was explored for TFET application and GeSn p-channel TFETs is realized for the first time. Descent electrical characteristic was achieved.
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Supramolecular NanoStamping (SuNS) : fabricating nano/bio devices using DNA as a movable type
… lithography. It was used to print on multiple substrates, hard (gold, silicon), soft (Poly-methyl-methacylate or Poly-dimethyl-siloxane) or even liquid. The technical specifications of the printing process depend on the substrate material.
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FABRICATION OF POLYMER NANOFLUIDIC CHIPS WITH PROTON BEAM WRITING AND NANOIMPRINTING FOR DNA LINEARIZATION
… Among various nanofabrication methods and chip substrate material, several type of polymer substrates are evaluated on throughput and functionality. The most suitable method to achieve high throughput replication of the nanofluidic devices is thermal imprinting. Nanoimprinting can be completed …
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Optimizing cellular attachment and function in long-term hepatocyte cultures using polyelectrolyte multilayer surface modification
… cultures. Thus, a challenge exists in designing materials suitable for supporting liver-derived cells that are not only biochemically hepatospecific but also biophysically sensitive to the mechanical nature of hepatocytes to achieve highly differentiated cell phenotype found in a natural liver. …
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Experimental Studies on the Mechanical Durability of Proton Exchange Membranes
… proposed to characterize properties of fuel cell materials that affect the mechanical durability of proton exchange membranes (PEMs). The first two methods involved measuring the in-plane biaxial strength of PEMs and the biaxial hygrothermal stresses that occur in PEMs during hygrothermal cycles. …
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Electrochemical and spectroscopic analysis of collagen films and lipid bilayers on biomaterial surfaces
… step towards biointegration of an implant material into the human body is the adsorption of proteins. This thesis aims at the development of a stable and relatively simple system to model the native protein film on a biomaterial surface under the influence of electric fields. Collagen was …
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A study on the cleaning and modification of metal surfaces by direct current cathodic electrolytic plasma process
… engineering, tailor the surfaces of engineering materials. The treatments are usually intended to change physical properties such as thermal or electrical conductivity, modify the surface dimensions, i.e. roughness, etc. A novel surface treatment method, Electrolytic Plasma Process (EPP), was …
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Investigation into the design of ultra-wideband (UWB) and multi-band antennas
… ease of fabrication and freedom of dielectric material selection. Next, we considered the use of coplanar waveguide (CPW) fed printed UWB antenna for compact, body-worn applications. We investigated the antenna performance using empirical optimisation. The work on CPW-fed printed antennas has …
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Characterization of Diamond-Semiconductor Interfaces
… deposition can unintentionally impact the substrate the diamond is being deposited on. This work focuses on characterizing the changes occurring near the diamond-substrate interface using transmission electron microscopy and chemical analysis by electron energy loss spectroscopy and energy …
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Conversion kinetics of oxyfluoride-derived YBCO films
… (5000 Y20 3, 500 Ce02) Ni-single crystal substrates by metal organic deposition (MOD) process. Glassy films were converted to epitaxial YBCO films, by heating in wet atmosphere of N2/02 mixture. A novel technique was used to determine the rate of conversion of films from glassy state to …
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The effects of deposit thermal history on microstructure produced by uniform droplet spray forming
… the solidification rate of the deposited material is a key parameter that influences its microstructure formation and consequently, its mechanical properties. Ideal deposit microstructure has fine grain size and minimal segregation. The purpose of this thesis is to quantify the effects of …
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Development of novel series and parallel sensing system based on nanostructured surface enhanced Raman scattering substrate for biomedical application
… between metal and surrounding dielectric material caused by propagating surface plasmon resonance (SPR) or localized surface plasmon resonance (LSPR) enables a variety of new applications in different areas, especially biological sensing techniques. One of the promising biological sensing …
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Tomographic reconstruction and sub-surface imaging of porous nitride semiconductors
… methods to further our understanding of these materials. I investigated nanostructured nitrides through porous GaN distributed Bragg reflectors (DBRs), highly-reflective and wavelength-selective mirrors for optoelectronic device applications such as next-generation micro light emitting diode …
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Electrochemical fabrication of semiconductor nanostructure arrays for photonic applications
… can provide control over nanostructure size, material composition, and periodicity for structures with dimensions less than 20 nm. To address these challenges, a nanostructure synthesis technique has been developed that is based on the self-organization of nanometer scale pores during the …
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MICROFABRICATION OF TITANIUM DIBORIDE PATTERNED ON SILICON SUBSTRATES FOR MONO- AND CO-CULTURE OF ENDOTHELIAL AND MESENCHYMAL STEM CELLS
… cells on biocompatible titanium diboride substrates patterned as circles and lines organized as arrays to induce interaction of these layers with the Islets of Langerhans for their in vitro prolonged viability. Our designed BIOMEMS device evaluates the influence of substrate material …
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