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 34 for “"gold coated"”.
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DNA Biosensors Based on Gold-Coated Magnetic Nanoparticles
… approach. In this approach, conducting gold coated magnetic nanoparticles (Au@MNPs) are used as active elements in the capture and quantification of analytes. In this regard, Au@MNPs has been studied as dispersible electrodes in the first results chapter. Four types of Au@MNPs with …
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Chloride Selective Gold Coated Fiber Bragg Grating Sensor
Our research aims at a chloride-sensitive gold-plated Fiber Bragg Grating (FBG) sensor that can detect chloride with good resolution. This sensor is designed for applications in water treatment plants and swimming pools where safety and quality matter. And for better results, we use Atomic Layer …
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The Optimization of Gold Coated Iron Nanoparticle Synthesis Methods
… in the fabrication of nanoparticle systems, gold is one of the most popular. Gold has a defined affinity for sulfur, which gives a gold surface the potential for functionalization if a thiolated ligand is used. However gold is rare and costly, and cannot be used frivolously when designing a …
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Development of an inking system for continuous roll-to-roll microcontact printing of hexadecanethiol (HDT) on gold-coated PET
… self-assembling monolayers (SAMs) on flexible, gold-coated PET substrate. An ink tank and dryer system are designed and built to enable this material combination to be printed in a continuous manner. Measurement of print quality and pattern replication is executed to confirm that the system per- …
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Manufacture and utilization of a biodegradable sensor platform from gold coated zein nanophotonic films to detect acrylamide and Ara-h1 using SERS
… of the fabrication method of nanopatterned and gold coated zein surfaces, a simultaneous three-dimensional transfer was used. Four different nanopatterns, namely positive pyramids, inverted pyramids, nano pillars and nano pores were transferred onto zein films along with either 80 or 200 nm gold …
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Stability of Field Emitter Arrays to Oxygen Exposures
… also evaluated the emission current stability of gold-coated field emitter arrays to oxygen exposures. oxygen at 1x10-6 torr was introduced into the chamber through a leak valve for different lengths of time and duty cycles. To ensure identical oxygen exposure and experimental measurement …
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Design, fabrication and characterization of polypyrrole trilayer actuators
… trilayers: an electrolyte gel method and a gold coated PVDF membrane method. It will discuss the construction processes as well as properties of resulting trilayers by looking at force production, strain rate, etc.
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Unleashing the potential of ULPING: synthesis and property tuning of opto-electronic materials
… on opto-electronic materials. Silicon, Gold-coated silicon, and gallium oxide were chosen as substrates, revealing diverse nanostructure morphologies upon parameter modulation. Opto-electronic characterization showcased amplified band gaps across all materials, harmonizing with the newly …
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Energy analysis and fabrication of photovoltaic thermal water electrolyzer and ion transport through modified nanoporous membranes
… been performed on ion permselectivity across gold-coated charged surfaces and charged nanopores. In the second part of the dissertation, a focus of interfacial transport phenomena is proposed in order to achieve improved- charge selective nanofluidic systems. There have been numerous studies …
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Endogenous and exogenous control of polymers for spatiotemporally defined drug delivery
… drug release was demonstrated using a novel gold-coated hydrogel and focused ultrasound. Together, these studies have presented new biomaterial systems as versatile tools for controlled drug delivery with potential applications in immunotherapy and tissue engineering.
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The integration of fibre optics for atom chips
… in this thesis, from early use of evaporated gold coated mirrors to the fully integral solution of photorefractive Bragg gratings. In addition to a thorough analysis of the optical properties of these fibre gap cavities, experimental results indicate that these gap cavity devices can be …
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Development and characterization of XUV xenon laser
… conditions have been studied. We found that a gold coated target provides an 80% increase in output energy over a plain stainless steel target, and thus becomes an attractive way of improving the Xe laser energy. In order to use Xe laser as a source for XUV holographic imaging, its coherence …
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Polysaccharide-based nanostructures for growth factor delivery and mesenchymal stem cell activation
… (PEMs) and electrospun nanofibers. On flat gold-coated glass surfaces, PEMs were constructed using the polycations chitosan and N,N,N -trimethyl chitosan, and the polyanions hyaluronan, chondroitin sulfate, and heparin. An exhaustive spectroscopic study was performed on all of the PEMs pairs …
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Electrically Controlled Formation and Release of Admicelles for Solid Phase Extraction
… and release of dodecyl sulfate on planar gold, gold coated stainless steel, and a porous stainless steel frit, using impedance spectroscopy to observe the layer formation with various surfactant concentrations and applied potentials.</p>
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Symmetry Specific Study of Ozone Isotopomer Formation
… was improved, essentially by the use of a gold-coated astigmatic mirror multipass cell and a calibrated confocal Fabry-Perot etalon. All atmospherically relevant, i.e. the simply 17O or 18O substituted ozone isotopomers could thereby be quantified. Precision in the measurement of the …
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Electrochemical Oxidation of Individual Silver Nanoparticles: Exploring the Effect of Particle Shape, Capping Ligand, Electrolyte, and Potential on the Signal
… with dark field microscopy, silver and gold coated silica particles were successfully sized from a flowing mixture in both forward and reverse directions. </p>
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All-optical ultrafast switches based on thin film coated-tilted fiber Bragg grating
… time detection of the percolation of Ag films coated on the surface of fibers is achieved through measurements of TFBG transmission spectra by gradually etching the metal films to thicknesses between 15-25 nm. Secondly, all-optical photo-thermal based bistability and self-pulsing, i.e., …
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Lithograph regulation of cellular mechanical properties c by Tsu-Te Judith Su.
… monolayers (SAMs) of alkanethiolates on gold was used to create a planar substrate of islands surrounded by non-adhesive regions. The cells were physically constrained within nanometer high adhesive cylindrical posts of defined size on the surface of a titanium and gold coated coverslip. …
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Portable EIS and SERS sensing with flexible sensors
… we also increased the EF by 3.4 times for a gold-coated sensor which is more stable, and bio-compatible by fine-tuning the distance among nano-pillars. With this ultrasensitive, low-cost, and highly uniformed substrate, the application with a handheld Raman spectrometer for the detection of …
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Radiofrequency heating of nanoclusters and nanoparticles for enzyme activation
… enzyme, thermolysin, covalently attached to gold coated iron oxide nanoparticles (6.1 nm in core diameter). Thermolysin activity was a function of applied radiofrequency power, independent of bulk solution temperature. Besides iron oxides, many other inorganic nanomaterials have been …
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