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 118 for “"scanning probe"”.
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Quantitative capacitance measurements using a scanning probe microscope
… method by which an atomic force microscope with scanning capacitance microscopy (SCM) capability can be employed in a nontraditional fashion to quantitatively measure the capacitance of metal-oxide-semiconductor (MOS) structures. The capability to deduce sample capacitances is based on resonant …
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Microfabrication of silicon tips for scanning probe microscopy
… the microfabrication of silicon tips for Scanning Probe Microscopy. First, a microfabrication process was developed to produce silicon tips over 100 um height with a sharp apex of ~10–20 nm. To prevent inadvertent contact between the substrate bearing the tip and the sample being probed, …
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Scanning Probe Array Development for Dip Pen Nanolithography
… to install the arrays in AFMs modified for multi-probe applications. The arrays were used to write patterns of 1-octadecanethiol on gold surfaces with line widths as small as 25nm, write speeds as fast as 20mum/sec, and up to four patterns overlapping the same region.
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Scanning Probe Microscopy of Biomaterials and Nanoscale Biomechanics
… and using a nanoneedle attached to the AFM probe as the sensing element in liquid. It was shown that this method in liquid maintained the harmonic dynamic characteristics of the cantilever similar to that in air and had an intrinsic high quality factor. The performance of the new method is …
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Microelectromechanical and Microfluidic Systems for Scanning Probe Lithography
… two major challenges faced by traditional single-probe SPL technology---lithography throughput and probe coating technique. System-level improvements of SPL have been successfully achieved. First, micromachined, thermally actuated cantilever probe arrays are developed to improve the throughput and …
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Scanning Probe Microscopy of Biomaterials and Nanoscale Biomechanics
… properties of a collagen fibril was probed and it was revealed that a single collagen fibril behaves predominantly as a shear piezoelectric material, and has unipolar axial polarization throughout its entire length. Furthermore, it was revealed that there existed an intrinsic …
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Scanning probe microscopy study of thin film solar cells
… thin film solar cells have been studied by using scanning probe microscopy based techniques. The scanning spreading resistance microscopy (SSRM) has been developed on the cross-section of CdTe solar cells to study the resistance and carrier concentration distribution in different layers of the …
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Scanning probe investigations of magnetic thin films and nanostructures
… to make these properties accessi-ble by means of scanning probe microscopy have been investigated. In the first part of this thesis magnetic thin films with out-of-plane mag-netic anisotropy covered by ultrathin MgO films have been prepared and then investigated with scanning tunneling microscopy, …
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Design, fabrication, and testing of a scanning probe potentiometer
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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Scanning probe microscopy with inherent disturbance suppression using micromechanical systems
All scanning probe microscopes (SPMs) are affected by disturbances, or mechanical noise, in their environments which can limit their imaging resolution. This thesis introduces a general approach for suppressing out-of-plane disturbances that is applicable to non-contact and intermittent contact SPM …
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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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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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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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Surface studies of organic thin films using scanning probe microscopy and nanofabrication
… and nanocrystals on surfaces. Conductive-probe atomic force microscopy (CP-AFM) has been used extensively for studies of alkanes, phenylalkanes and arenethiols; however, the conductive properties of porphyrins have not been studied as rigorously. Characterizations with CP-AFM are becoming …
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Scanning Probe Microscopy Studies of Dissolution and Deposition Processes on Electrode Surfaces
Embargo set by: Seth Robbins for item 72445 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs
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Application of field programmable analog arrays (FPAAs) to fast scanning probe microscopy
For a long time, signal processing used to be accomplished by microprocessors and DSPs (Digital Signal Processors). The advent of reconfigurable computing devices, such as Complex Programmable Logic Devices (CPLDs) and Field Programmable Gate Arrays (FPGAs) has given a new dimension to signal …
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Electrostatic simulations of interactions between a scanning probe and quantum Hall liquid
… thesis we modelled interactions between metal probe and quantum Hall liquid. The setup geometries were similar to those met in scanning capacitance microscopy experiments carried out by Ashoori's group [1]. The main interest was to explore the 2DEG charge densities for a different system …
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