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 21 for “"Scanning probe microscopy (SPM)"”.
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Development of a multipurpose near-field imaging platform
… idea of combining the high spatial resolution of scanning probe microscopy (SPM) with traditional optical imaging techniques has been revolutionizing for multiple fields - Condensed Matter Physics, Material Science, Chemistry, and Biology. This high potential is met with the special requirements …
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Nanoscale stress-induced conducting states in functional oxides
… interfaces. Moreover, with the advent of scanning probe microscopy (SPM), large magnitudes of stress can be applied in a highly localised manner via nanoscale probe tips, making this process ideally suited for materials possessing confined geometries. This thesis seeks to address the role …
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Low-temperature magnetic force microscopy with a simple design: analyzing the magnetic domains of a simple hard disk drive
… investigation on a simple memory storage disk. Scanning probe microscopy (SPM) was first developed to study various electronic properties of different materials, such as imaging high T [subscript c] superconductors. Soon after, the SPM grew and expanded in terms of techniques and properties that …
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Colloid phenomena in surface-modified polymer systems.
… techniques to study modified polymer surfaces. Scanning probe microscopy (SPM) is used throughout this work as an experimental platform for the development of advanced techniques for the characterisation of polymer surfaces and adsorbed protein layers. A new method for the modification of …
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Scanning Probe Investigations of Magnetic Nanoparticles, Protein Binding and the Synthesis of Rare Earth Oxide Nanoparticles Using Nanoscale Lithography
… ideal for high resolution investigations using scanning probe microscopy (SPM). Local measurements of surface properties combined with visualization of the steps of chemical reactions at the molecular level were accomplished. Fundamental studies of the chemical steps for patterning proteins are …
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Individual Carbon Nanotube Probes And Field Emitters Fabrication And T
… solid samples such as conventional atomic force microscopy (AFM) silicon tips. The procedures developed for the FIB assisted individual CNT tip fabrication will be described in detail. Because of their excellent electrical and stable chemical properties, individual CNTs are potential candidates …
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Investigation of van der Waals ferroelectric CuInP2S6 by scanning probe microscopy
… of the response to external fields. Scanning probe microscopy (SPM) can measure and collect rich multi-dimensional information and has become a powerful tool for the characterization of micro-nanoscale materials. Ferroelectric materials play an important role in non-volatile memory …
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Probing Nanoscale Functional Properties of Perovskite and Wurtzite Ferroelectrics via Scanning Probe Microscopy
Scanning probe microscopy (SPM) is considered essential for visualizing, analyzing, controlling, and engineering novel functional attributes of nanoscale materials. Diverse SPM-based methodologies were employed to investigate the topography, ferroelectricity and conductivity of perovskite and …
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Interfacial Properties of Graphene and 2D Materials Heterostructures Investigated by Scanning Probe Microscopy
… </p><p>In this dissertation, advanced scanning probe microscopy (SPM) techniques, including contact resonance atomic force microscopy (CR-AFM) and piezoresponse force microscopy (PFM), are applied to study the interfacial mechanical and piezoelectrical properties of graphene and 2D …
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Electronic properties and device applications of rotationally controlled van der Waals heterostructures
… bilayer graphene using Raman spectroscopy, scanning probe microscopy (SPM), and electrical transport measurements under an applied transverse electric-field. We also demonstrate resonant tunneling in double bilayer graphene heterostructures using hexagonal boron nitride (hBN) as an …
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Investigations of Structure / Property Interrelationships of Organic Thin Films Using Scanning Probe Microscopy and Nanolithography
… of organic thin films were studied using scanning probe microscopy (SPM) and scanning probe lithography (SPL). Systems of organic thin films such as n-alkanethiols and pyridyl functionalized porphyrins were characterized at the molecular level, and measurements of the conductive properties …
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Applying scanning probe microscopy for the investigation of molecular self-assembly mechanisms and properties of designed nanomaterials
Scanning probe microscopy (SPM) for conducting surface characterizations of nanomaterials and molecular self-assembly processes is emerging as an important contribution in nanotechnology, especially towards the design of molecular electronic devices. Another area of importance is the …
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Nanoscale imaging and characterisation of Amyloid-β
In this work several novel Scanning Probe Microscopy (SPM) methods have been applied to the study of the amyloid peptide implicated in the pathogenesis of Alzheimer’s disease (AD). Amyloid-β (Aβ) undergoes a hierarchy of aggregation following a structural transition making it an ideal subject of …
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Membrane Fouling Mitigation with Water Hammer
… which was later confirmed with membrane surface scanning electron microscope (SEM) and scanning probe microscopy (SPM) imaging. Analysis of the critical mechanisms involved in the flux improvement was done by modelling the increase in shear stress at the membrane surface due to water hammer. The …
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Electro-mechanically interfacing with biology using piezoelectric polymer nanostructures
… nanowires were characterised using Differential Scanning Calorimetry (DSC), X-ray Diffraction (XRD) and Piezo-response Force Microscopy (PFM) combined with Finite Element Analysis (FEA). The results indicated that the nanowires were highly crystalline (up to 45 %) with a degree of molecular …
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Scanning Probe Microscopy Study of Molecular Nanostructures on 2D Materials
… and chemical properties. This thesis presents scanning probe microscopy (SPM) investigation of emerging 2D materials, molecular nanostructures on 2D substrates at the nanometer scale, and biophysical processes on the biological membrane. Two main techniques of nano-probing are used: scanning …
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Controlling Surface Chemistry on the Microscopic and Nanoscopic Scale through Photopatterned Self-Assembled Monolayers
… intensity and surface modulus was observed using scanning probe microscopy: SPM), which was expected since higher laser intensities should remove more glycol monomers from the surface exposing a greater percentage of the bare gold substrate. Conversely, an inverse relationship was</p><p>determined …
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Electrodeposited Functional Nanowires for Energy Applications
… studied using a variety of techniques including: scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), X-ray diffraction (XRD) and transmission electron microscopy (TEM) and all of the NWs have been shown to be polycrystalline. The energy harvesting performance of vertically …
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Quantum transport in magnetic topological insulators
… films. Transport measurements and various scanning probe microscopy (SPM) techniques are employed to probe the relation between magnetic domain structures and carrier transport behaviour in the samples during the QAH phase transition as well as in the QAH regime. Patch-like structures …
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Control-systems based analysis and design methods for scanning probe microscopy
… A class of devices, with micro-sized sensor probes, called Scanning Probe Microscopes (SPMs) are in the forefront of the technology that have demonstrated imaging and manipulation of sample properties. However, this technology is still far from realizing the promise of routinely tailoring …
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