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 973 for “"AFM"”.
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AFM and C-AFM Studies of GaN Films
… uses the techniques of atomic force microscope (AFM) and conductive AFM (C-AFM) to study the conduction properties of n-type GaN films. A total of 16 samples were examined and grouped according to their surface morphologies and conduction behaviors. The most common type of surface morpliology was …
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Chemical functionalization of AFM cantilevers
Atomic force microscopy (AFM) has been a powerful instrument that provides nanoscale imaging of surface features, mainly of rigid metal or ceramic surfaces that can be insulators as well as conductors. Since it has been demonstrated that AFM could be used in aqueous environment such as in water or …
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Nano Mechanical Machining Using AFM Probe
… techniques. An atomic force microscope (AFM) probe based nano fabrication, has, therefore, been used to overcome some the major restrictions of the traditional processes. This technique removes material from the workpiece by engaging micro/nano size cutting tool (i.e. AFM probe) and is …
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Towards Synthetic Molecular Motors Interfaced by AFM
… for technical applications. In this thesis, AFM-based single molecule force spectroscopy (S M FS) was utilized to investigate the mechanical change in single synthetic molecules upon environmental changes (external stimuli) in liquid environment at room temperature. The molecules are either …
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AFM-Assisted Nanofabrication using Self-Assembled Monolayers
… probe nanografting technique is that the AFM tip loses resolution through wear during the patterning procedure. This study examines the possibility of developing a new AFM lithographic method to avoid wear: the use of enzymes covalently attached to a tip as a site-specific catalyst.
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Molekulare Bindungsstudien herzmuskelspezifischer Protein-Varianten mittels Rasterkraftspektroskopie (AFM)
… mittels Rasterkraftspektroskopie (AFM)**<br /><br /> Arrythmogene rechtsventrikuläre Kardiomyopathien (*arrythmogenic right ventricular cardiomypathies*, kurz: *ARVC*) stellen schwere Erkrankungen des menschlichen Herzmuskels dar. ARVC sind pathologisch charakterisiert durch den …
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AFM surface force measurements between hydrophobized gold surfaces
… nano-bubbles seen in atomic force microscopic (AFM) images. Recent measurements conducted in degassed water showed, however, smooth force versus distance curves, indicating that the hydrophobic force is not an artifact due to nanobubbles.1, 2 Still other investigators3, 4 suggested that the …
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Genome scanning : an AFM-based DNA sequencing technique
… C, T, or G) and results in distinct peaks in the AFM-produced image. Genome Scanning has been successful at identifying 40 base strands of synthesized DNA and has been shown to detect a particular base type on 48 kilobase strands of lambda DNA. Currently, Genome Scanning is only accurate to 3-26 …
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Molecular Self-Assembly of Carbon Nanosheets via AFM Nanoprinting
… self-assembly with atomic force microscopy (AFM), which we believe has the potential to create devices with unprecedented properties and functionalities in both the technological and biological domains. To this end, we first present the development of a proof-of-concept custom AFM nanoprinter …
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Nanomechanical viscoelastic characterization of rubber with atomic force microscopy (AFM)
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-14 without embargo terms
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Adsorption & Adhesion of Asphaltenes at Complex Interfaces: An AFM Approach
… behaviour depending on their functionality. AFM morphological characterisation revealed that adsorption occurs at a range of lengthscales, from monomers to flocs, and challenged the concept of a discrete solubility limit. Further optimisation of the system and a multitechnique …
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Mechanical unfolding of membrane proteins captured with single-molecule AFM techniques
Atomic force microscopy (AFM) is a powerful technique that enables to study biological macromolecules and dynamic biological processes at different scales. It is an excellent tool for imaging of biological objects under various conditions at a nanometer resolution. Force mode of AFM, so called …
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Experimentally validated 3D MD model for AFM-based tip-based nanomanufacturing
<p>In order to control AFM-based TBN to produce precise nano-geometry efficiently, there is a need to conduct a more focused study of the effects of different parameters, such as feed, speed, and depth of cut on the process performance and outcome. This is achieved by experimentally validating a MD …
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The combined AFM manipulation and fluorescence imaging of single DNA molecules
A combined fluorescence microscope/AFM set-up was constructed, which enabled the real-time manipulation of single DNA molecules. Fluorescence images of these TO-PRO-3 intercalated strands could be taken, while they were stretched with an AFM tip on silanised or polylysine covered glass surfaces. …
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Micrometer-scale chemical analysis using heated AFM cantilever and mass spectrometer
… method using a heated atomic force microscope(AFM) cantilever and mass spectrometer. Simulations investigate the underlying transport mechanisms within the system and the impact of various design parameters. The way to optimize the system is suggested based on the simulation results. A heated …
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Design, modeling and fabrication of contact stiffness calibration samples for CR-AFM
… contact stiffness of an atomic force microscope (AFM) cantilever tip in contact with a surface, which is a critical step in the measurement of nano-mechanical properties. The calibration exploits the relationship between contact resonance (CR) frequency and contact stiffness during contact …
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Development and application of correlative STED and AFM to investigate neuronal cells
… a technique combining atomic force microscopy (AFM) with stimulated emission depletion (STED) microscopy was developed. First a custom STED microscope was developed. To facilitate the design of this system the theoretical performance of a range of STED techniques (cw-STED, time-gated STED, …
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