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 117 for “"Surface Functionalization"”.
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Surface functionalization of graphene devices
… applications in electronic devices. Chemical functionalization on its surface promises a powerful tool to manipulate its electronic properties and modify its atomic structures. Graphene is a true two-dimensional material; every carbon atom in single layer graphene is exposed to its …
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Anisotropic surface functionalization and applications of upconversion nanoparticles
… nanomaterials practically useful, their surfaces require functionalization with active chemical groups that target important specific biomolecular and cellular structures within the body. Current literature assumes UCNPs are spherical in shape and that isotropic surface modification …
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Toward spatial control of gold nanorod surface functionalization
… The resonant generation of a localized surface plasmon resonance (LSPR) at the GNR surface results in interesting optical properties and unique interactions with molecules. Combined with their biocompatibility, ease of synthesis and facile surface functionalization, these anisotropic …
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Nanocrystalline Transition Metal Ferrites Synthesis, Characterization and Surface Functionalization
… hydroxide. Due to the passivation of their surfaces with DEG molecules, the as-prepared nanoparticles are stable against agglomeration and can be easily dispersed in polar protic solvents (water, alcohols, etc.). Alternatively, a postsynthesis passivation with carboxylate ions can render the …
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Nanocrystallization confined to porous matrices with and without surface functionalization effects
… Nanocrystals have a significantly increased surface area to volume ratio as compared to standard micron-sized crystals, which results in improved solubility and dissolution rates. There already exist some industrially relevant techniques for producing pharmaceutical nanocrystals, which …
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Gold nanorod surface functionalization: construction of dynamic surfaces and heterogeneous silica coating
… have been investigated due to their unique surface plasmon resonances (SPR) that are tunable in wavelength according to nanoparticle shape. The collective oscillation of the electrons in the GNRs excited by incoming light leads to enhanced electromagnetic fields near the gold surface, and …
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Multiscale Simulation of Atmospheric Pressure Pulsed Discharges Used in Polymer Surface Functionalization
… the impact of gas flow on radical generation and surface treatment. Convective gas flow alters the relative abundance of reactive species in the discharge that affects the surface composition. Continuous surface processing was simulated, wherein radicals formed on the polymer move out of the …
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Nanomaterials from lignocellulosic biomass : tailorable synthesis via surface functionalization and self-assembly mechanisms
… efficient switchgrass fractionation and lignin functionalization. The cellulose-rich pulp with most xylan and lignin removed can be utilized in high concentration enzymatic sugar production. The recovered lignin can be converted into morphology-tunable (compact-/hollow-dominant) LNPs due to the …
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The effects of surface functionalization on rheology, structure and transport properties of nanocomposites
In this thesis, the effects of surface functionalization using hydrophobic silanes on properties of nanocomposites comprising 42 nm silica particles suspended in a melt of polyethylene-glycol (PEG) are studied using rheological, static and dynamic x-ray scattering studies. The nanocomposites are …
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Using molecule-surface interactions for improved photoelectrochemical device performance and modeling
… molecules known as functional groups to the surfaces of metals and semiconductors is called surface functionalization. It is a popular approach for tuning the underlying material’s properties such as its surface chemistry, band gap, and chemical stability. Surface functionalization is used in …
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Surface Functionalized Water-Dispersible Magnetite Nanoparticles: Preparation, Characterization and the Studies of Their Bioapplications
… oxide magnetic nanoparticle synthesis and their surface functionalization hold a crucial position in the design and fabrication of functional materials for a variety of biomedical applications. Non-uniform nanoparticles with poor crystallinity, prepared by conventional methods, have only limited …
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Synthesis and surface chemistry of zinc oxide nanowires for chemical sensor applications
… in this dissertation comprises of synthesis and functionalization of high quality ZnO nanowires for highly sensitive and selective p-nitrophenol vapor sensor. High-quality ZnO nanowires were synthesized through a vapor-liquid-solid process in a customized chemical vapor deposition furnace. …
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Engineering and optimizing physiological cell isolation via the secondary anchor targeted cell release system
… purified cell samples for personalized medicine. Surface functionalization allows for the customization and adaption of surfaces for a variety of needs and applications. We have used surface functionalization to adapt glass and PDMS surfaces with the SATCR surface, but there exists a great deal of …
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The Application Of Graphene Films In Biosensing And Electrowetting
… defects has high charge carrier mobility and surface areas, which is ideal for biosensors. However, literature shows a lot of variations in the measurements using graphene biosensors. In addition, the surface functionalization of graphene in order to enhance the specificity has not been fully …
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Formulation Devlopment Of Mesoporous Silica Nanoparticles As An Injectable Delivery System
… The objective of my dissertation was to optimize surface functionality, particle shape and methods of colloidal stabilization of mesoporous silica by PEG for delivery of drug/drug combinations. This was achieved by pursuing the following three aims:</p> <p>1. Optimize surface functionality of MSN …
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EXPANDING APPLICATIONS OF IRON OXIDE NANOPARTICLES BY SURFACE FUCNTIONALIZATION: FROM MAGNETIC RESONANCE IMAGING TO NANO-CATALYSIS
… (SPIONs) in MR imaging and nanocatalysis via surface functionalization. A dopamine-based surface-functionalization strategy was established. The Simanek dendrons (G1 to G3), oligonucleotides and amino acids were loaded onto SPION surfaces via this approach to develop pH-sensitive MRI contrast …
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Chemical and biological sensors based on organic semiconductors
… thin film transistors, and a miniaturized surface plasmon resonance biosensors for biotechnology and medical diagnostics applications. During completion of my research projects I designed and optimized several device architectures using numerical simulations and fundamental physical …
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The development of targeting nanosystems for the treatment of glioblastoma and neuroblastoma tumours
… size of approximately 7 nm, which doubled after surface functionalization with PEG and slightly increased following CTX surface functionalization. The zeta-potential revealed highly stable citrate NPs and decreased to more neutral charges following PEG and CTX surface functionalization confirming …
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