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Showing 1 to 20 of 789 for “"Atomic Force Microscopy"”.
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Molecular assemblies observed by atomic force microscopy
… collagen fibers imaged by transmission electron microscopy. Secondly, a covalent assembly approach to prepare membrane protein for AFM imaging that avoids crystallization was proposed. High-resolution AFM topographs can reveal structural details of single membrane proteins but, as a prerequisite, …
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Image processing for precision atomic force microscopy
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Accurate capacitive metrology for atomic force microscopy
… sensing metrology designed for a prototype atomic force microscope (AFM) originally developed in the MIT Precision Motion Control Lab. The capacitive measurements use a set of commercial capacitance sensors intended primarily for use against a flat target. In our design, the capacitance …
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Nanocharacterization of Porous Materials with Atomic Force Microscopy
<p><em>Scanning Probe Microscopy techniques have proven very useful in the investigation of porous nanostructured surfaces. Especially, Atomic Force Microscopy (AFM) has been widely used due to its compatibility with non-conducting surfaces. In particular, AFM often complements other techniques …
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Atomic Force Microscopy Study of Clay Mineral Dissolution
… with respect to acid dissolution using in situ atomic force microscopy (AFM). Three techniques are described which make it possible to fix these minerals and other small particles to a suitable substrate for examination in the fluid cell of the atomic force microscope. A suite of macros has also …
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Nonlinear Dynamics of Tapping Mode Atomic Force Microscopy
… investigate the grazing dynamics of tapping mode atomic force microscopes (AFM) subjected to a base harmonic excitation. The nonlinear dynamics of the AFM microcantilever are studied in both of the monostable and bistable phases with the microcantilever tip being, respectively, located in the …
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Novel probe structures for high-speed atomic force microscopy
Atomic Force Microscopy (AFM) has become an indispensable metrology tool for nanoscale surface characterization. Today, research and industry demand faster and more accurate metrology and these demands must be met expediently. Traditional AFM cantilevers and associated actuators (i.e. …
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Cantilever Dynamic Analysis in Tapping Mode Atomic Force Microscopy
Tapping mode atomic force microscopy (AFM) is becoming popular in the area of biology, as well as for polymer and semiconductor materials science. Unlike other AFM techniques, it only makes intermittent contact with the sample, which largely reduces any potential surface damage to soft materials, …
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Dynamic Atomic Force Microscopy and applications in biomolecular imaging
The Atomic Force Microscope (AFM) is a key member of the Scanning Probe Microscope (SPM) family. Its versatility allows it to image and manipulate nanoscale features with high precision, making it one of the main instruments in nanotechnology for surface characterization. The aim of this thesis is …
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Investigation of protein-protein interaction using atomic force microscopy
… </p> <p>In our laboratories, we use the force spectroscopy (FS) technique to study protein binding and dissociation. FS measures the strength of the protein molecules bond with high resolution down to pico-Newton either on the surface of solid substrate or the membrane of living cells. …
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Atomic force microscopy methods to study protein phase transitions
… associated with protein phase changes via atomic force microscopy, infrared spectroscopy, and other biophysical techniques. AFM is a powerful surface-based technique which can provide nanometre-resolved morphological and mechanical information on protein aggregates. As such, it is capable …
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The study of organic crystals by atomic force microscopy
… surface and its immediate environment. While atomic force microscopy (AFM) is a useful tool for studying surfaces, it is not a common technique for studying organic crystals. The rst part of this report aims to address problems of imaging organic crystals by AFM which arise from the nature of …
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Theoretical and Experimental Atomic Force Microscopy Investigations of Staphylococcus aureus
… either serotype 5 or 8 capsular polysaccharides. Atomic force microscopy (AFM) was used to investigate three serotypically different S. aureus strains, two of which express capsular polysaccharides, in air and phosphate buffered saline. Adhesion and compliance were determined through normal force …
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Using current sensing atomic force microscopy to study heterogeneous materials
… membranes, are studied by using current sensing atomic force microscopy (CSAFM). In the calculated results, correlation between surface morphology and surface conductance images is obtained using CSAFM, and the implication of the surface conductance and its variations is analyzed. It is found …
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Molecular-Level Investigations Combining Nanoscale Lithography and Atomic Force Microscopy
… and evaluated using characterizations with atomic force microscopy (AFM). The nanostructures of OTS were used as a resist for patterning fibronectin, an extracellular matrix protein. Particle lithography provides a practical and reproducible approach to generate billions of nanostructures …
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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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Modeling amplitude-modulation atomic force microscopy using direct-quadrature transformation
The student, Yuchen Xu, accepted the attached license on 2020-04-29 at 12:03.
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DNA double-strand break repair studied by atomic force microscopy
… homologous recombination (HR) pathway. Fast-scan atomic force microscopy (AFM) in fluid conditions was primarily used to explore the architectural arrangement, DNA binding and processing machinery of the Mre11-Rad50 complex from the thermophilic crenarchaeote Sulfolobus acidocaldarius. The …
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Multimodal Learning Methods for the Fundamentals of Atomic Force Microscopy
… specifically the working principle of an Atomic Force Microscope (AFM), through multimodal learning methods to assess whether students have an easier time understanding unintuitive concepts. This study used a custom lowcost haptic feedback controller as the main interaction tool for …
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The Stochastic Dynamics of Optomechanical Sensors for Atomic Force Microscopy
… used in cavity optomechanical sensors for atomic force microscopy. Atomic force microscopy (AFM) is a tool to image surface topology down to the level of individual atoms. Conventional AFM has been an essential tool for micro and nanoscale studies in physics, chemistry, and biology. Cavity …
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