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Full-Text Articles in Engineering Science and Materials
Effects On Digital Image Quality When Photographing Through A Transparent Material Used To Hold Or Flatten An Original Object, Paul E. Howell
Effects On Digital Image Quality When Photographing Through A Transparent Material Used To Hold Or Flatten An Original Object, Paul E. Howell
Masters Theses
An increasing number of libraries and archives are initiating projects where new and updated technologies make it practical to digitize materials containing color and fine detail. Many of the imaging systems and methods used for this process require that some type of glass or plastic be placed over the original to hold it flat and in the correct position during image capture. The physical properties of a material placed between an original object and the capture system or camera, during digitization, could possibly affect the accuracy of image color and quality being reproduced by the system. This investigation provides an …
Microcantilever-Based Force Sensing, Control And Imaging, Reza Saeidpourazar
Microcantilever-Based Force Sensing, Control And Imaging, Reza Saeidpourazar
All Dissertations
This dissertation presents a distributed-parameters base modeling framework for microcantilever (MC)-based force sensing and control with applications to nanomanipulation and imaging. Due to the widespread applications of MCs in nanoscale force sensing or atomic force microscopy with nano-Newton to pico-Newton force measurement requirements, precise modeling of the involved MCs is essential. Along this line, a distributed-parameters modeling framework is proposed which is followed by a modified robust controller with perturbation estimation to target the problem of delay in nanoscale imaging and manipulation. It is shown that the proposed nonlinear model-based controller can stabilize such nanomanipulation process in a very short …