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Full-Text Articles in Physics
Optical Method For High Magnification Imaging And Video Recording Of Live Cells At Sub-Micron Resolution, Jaime E. Romo Jr.
Optical Method For High Magnification Imaging And Video Recording Of Live Cells At Sub-Micron Resolution, Jaime E. Romo Jr.
Theses and Dissertations
Optical microscopy, the most common technique for viewing living microorganisms, is limited in resolution by Abbe’s criterion. Recent microscopy techniques focus on circumnavigating the light diffraction limit by using different methods to obtain the topography of the sample. Systems like the AFM and SEM provide images with fields of view in the nanometer range with high resolvable detail, however these techniques are expensive, and limited in their ability to document live cells. The Dino-Lite digital microscope coupled with the Zeiss Axiovert 25 CFL microscope delivers a cost-effective method for recording live cells. Fields of view ranging from 8 microns to …
Does Lowest Order Perturbation Of Λ Affect Ligo Detection?, Shuang Liang
Does Lowest Order Perturbation Of Λ Affect Ligo Detection?, Shuang Liang
Theses and Dissertations
Gravitational waves under the effect of a positive Cosmological Constant Λ has been a long time puzzle. To date, the full wave solution is still under construction, while attempts have been made to solve the linearized equations. We present a detailed derivative of the linearized Einstein’s Equations in a covariant manner, then solve for a lowest order perturbation in Λ. Results suggest that the Cosmological Constant has a large contribution to the phase of gravitational waves, which might be detectable.
Development Of A Phased Array Using Lnbs With Non-Synchronized Clocks, James I. Murray
Development Of A Phased Array Using Lnbs With Non-Synchronized Clocks, James I. Murray
Theses and Dissertations
A passive phased array is an array of antennas in which the phases of the signals on each element are controlled to be added to form a spatial beam. The advantage is that one can steer the beam without physically moving the constituent elements as well as create multiple beams on the sky simultaneously. This has application in the field of satellite and spacecraft communications where there is expected to be a large increase in satellite volume due to the increasing access to space. Traditional phased arrays can become costly to synchronize at satellite down-link frequencies, therefore we have built …