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 35 for “"chemical functionalization"”.
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Chemical functionalization of AFM cantilevers
… the combination of intrinsic feature of AFM and chemical modification technique of AFM cantilever. The surface molecule that is complementary to the molecule at the end of AFM probe can be investigated via specificity of molecule-molecule interaction.
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Chemical functionalization and modification of Au clusters
… unchanged during the synthesis and after the functionalization reaction which suggests the high stability of these particles. The functionalization of the ligand was confirmed by Proton Nuclear Magnetic Resonance Spectroscopy (1H NMR) and the NC size was characterized by TEM. In the second …
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Surface Chemical Functionalization based on Plasma Techniques
… materials to produce specific biological and chemical interactions. Modification of surface properties by altering the surface functionalities or by thin film deposition allow us to create and optimize surfaces with desired chemical and physical properties suitable for subsequent biological …
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Non-precious metal catalysts prepared by chemical functionalization of carbon surfaces.
… an effective method of power supply, converting chemical energy into electrical energy directly, and a way to employ clean energy. Fuel cells involve the use of platinum (Pt) as a catalyst, for both the oxygen reduction and hydrogen oxidation reactions, which is both rare and expensive. As such, …
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The impact of strain and chemical functionalization on two-dimensional materials
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Growth and chemical functionalization of SiC nanowires for biomedical applications in cardiology and oncology
… were synthetized and then anchored on the chemically modified surface of SiC NWs, employed as carriers. According to previous results obtained by my research group at IMEM-CNR, these SiC-based NWs are biocompatible and can be conjugated with several organic molecules (e.g. porphyrins). The …
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Nanotube reinforced thermoplastic polymer matrix composites
… effect of solid freeform fabrication (SFF) and chemical functionalization on anisotropy and limited reactivity, respectively. Both studies showed mechanical property improvements. The alignment study demonstrates a maximum increase of 93% in tensile modulus with single wall nanotubes (SWNTs). …
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Fatigue and Fracture Behavior of Graphene-based Nanomaterials
… lattice structure of graphene such as by using chemical functionalization. Using extensive atomistic simulations coupled with AFM-based nanoindentation tests, we systematically studied the fatigue behavior of graphene oxide and presented the tailoring of functional groups as a tool to tune the …
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CHARGE AND SPIN TRANSPORT STUDIES IN GRAPHENE AND BLACK PHOSPHORUS
… we enhanced the spin-orbit coupling via chemical functionalization and metallic adatom decoration. With the initial aim of studying spin transport in black phosphorus which has an energy band gap, I unexpectedly uncovered black phosphorus? potential as an outstanding thermoelectric …
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DIMENSIONALITY REDUCTION OF 2D MATERIALS: NANODEVICES AND IN-SITU NANOMECHANICAL ANALYSIS
… at different circumstances: (i) by means of chemical functionalization to obtain 2D electrolytes, and (ii) by rolling up mechanically exfoliated graphene nanosheets to form high-quality graphene nanoscrolls. We present a theoretical approach sustained by research experiments to reveal how 2D …
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Physical and chemical manipulation of carbon nanotubes and graphene for nanoelectronics
… building blocks. New methods of physical and chemical manipulation are needed to address these challenges. The work presented in this thesis aims to understand and design physical and chemical manipulation methods for carbon nanostructures. More specifically, this thesis is concerned with two …
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Interactions at interfaces across scales : from adsorption to adhesion
… Surface engineering is used to tailor the physicochemical properties of surfaces (microstructure, roughness, chemical functionalization, and charge) to achieve the desired behavior. First, macroscopic features are introduced on superhydrophobic substrates to restrict transport phenomena between an …
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Nanoporous graphene as a desalination membrane : a computational study
… of such membranes as a function of pore size, chemical functionalization, and applied pressure. Our results indicate that the membrane's ability to prevent the salt passage depends critically on pore diameter, with pores in the 0.7-0.9 nm range allowing for water flow while blocking ions. …
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Fluorinated Graphene Oxide: structure, morphology and its potential use in biological applications
… This thesis will elaborate on the structure, chemical functionalization, morphology, size distribution and biological applications of this material. Then, this thesis will discuss the limitations of this material and propose an optimization for these drawbacks. Fluorinated Graphene Oxide (FGO) …
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Surface functionalization of graphene devices
… practical 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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Understanding and designing carbon-based thermoelectric materials with atomic-scale simulations
… transport and the impact of structural and chemical changes on these properties, in turn providing new design strategies for improved performance. To discover new classes of thermoelectric materials, computational materials design is applied to the field of thermoelectrics. This thesis …
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Enhancement of the Properties of Polymer by using Carbon Nanotubes
… single-walled carbon nanotube (FSWNT) composite. Chemical functionalization on SWNTs with carboxyl functional group (COOH) aims at modifying the end caps of nanotubes, so to provide covalent bonding of SWNTs to the polymer matrix during manufacturing of composite systems. Different weight …
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Electrochemical Alkene Epoxidation Using Water as the Oxygen Source
Alkene epoxidation is a crucial chemical functionalization reaction that produces key chemical intermediates for the synthesis of various commercial end products. The current methods of producing epoxides are associated with a number of challenges, including the use of energy-intensive and …
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Effects and applications of capillary condensation in ultrathin nanoparticle assemblies
… assemblies. The versatility of existing chemical functionalization methods are limited by requirements for particular substrate surface chemistries, compatible solvents, and concerns over uncontrolled nanoparticle deposition. Here we describe the advantageous use of capillary …
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