Essays about: "interferometry"

Showing result 1 - 5 of 60 essays containing the word interferometry.

1. 1. Laboratory starlight simulator for future space-based heterodyne interferometry

   University essay from Luleå tekniska universitet/Rymdteknik

   Author : William Karlsson; [2023]
   Keywords : Angular resolution; Astronomy; Coherence length; Digital delay lines; Fiber optical circuit; Heterodyne interferometry; Interference; Laboratory starlight simulator; NIR light Near-Infrared ; Optical path differences; Space exploration; Starlight; Testbed environment;

   Abstract : In astronomy, interferometry by ground-based telescopes offers the greatest angular resolution. However, the Earth´s atmosphere distorts the incident wavefront from a celestial object, leading to blurring and signal loss. It also restricts the transmission of specific wavelengths within the electromagnetic spectrum. READ MORE

3. 2. Automated Quantitative Phase Imaging Pipeline : for Monitoring Bacterial Cell Growth under Chemical Influence

   University essay from Uppsala universitet/Avdelningen Vi3

   Author : Samuel Zargani; [2023]
   Keywords : image analysis; QPI; Quantitative Phase Imaging; QLSI; kvantitativ fasavbildning; Bildanalys;

   Abstract : Bacteria have a vital role in ecosystems and the human health. However, the effect of environmental pollution on them at the single-cell level are still not well understood. Label-free imaging has become increasingly important within science. It has allowed for the visualization of cells without the use of molecular tools or labels. READ MORE

4. 3. Performance Analysis of Environmentally Adaptable Grease in Large open gears

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Victor Ogunmoye; [2022]
   Keywords : Grease; Large open gears; tribology; lubrication; wear; friction; Twin disc; Material surface;

   Abstract : Environmentally adaptable grease (EAG) lubricants are essential in applications with loss lubrication due to their biodegradable nature. This is because the lubricants could be expelled into the environment during usage in some applications e.g., marine and mining applications. READ MORE

5. 4. Phase-Contrast Imaging, Towards G2-less Grating Interferometry With Deep Silicon

   University essay from KTH/Fysik

   Author : Rickard Brunskog; [2022]
   Keywords : Phase-contrast imaging; phase-contrast; CT-scanning; Computed-tomography; 1 micrometer resolution x-ray; grating-less phase-contrast imaging; Faskontraströntgen; faskontrast; CT-skanning; 1 mikrometer upplösning x-ray; gitterlös faskontrast; datortomografi;

   Abstract : Conventional phase-contrast imaging entails stepping an analyser grating across the detector to resolve the interference pattern caused by the x-rays after passing through a series of gratings in a so-called Talbot-Lau interferometer. However, the analyser grating in the interferometer poses a challenge, not only due to the machinery and alignment required but also due to each exposure delivering a dose to the subject. READ MORE

6. 5. Characterization of surface defects caused by ultrasonic cleaning of aluminium

   University essay from Uppsala universitet/Tillämpad materialvetenskap

   Author : Emanuel Eriksson; [2022]
   Keywords : Ultrasonic cleaning; surface cleaning; metal; aluminium; 7050; 2050; defects; surface defects; Energy Dispersive Spectroscopy; Scanning Electron Microscopy; Vertical Scanning Interferometry;

   Abstract : This master thesis studies the behaviour of two aluminium alloys in ultrasonic cleaning at two different intensities, as well as the effect of a cleaning solution, Formula 815 GD-NF on the same surface have been studied with respect to surface roughness and material composition. Methods like Light Optical Microscopy (LOM), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and 3D topography using white light interferometry (VSI) was used to study the surface and material composition. READ MORE