Essays about: "kisel"

Showing result 21 - 25 of 87 essays containing the word kisel.

  1. 21. Work function engineering for high temperature FD-SOI transistors

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Chenxi Wang; [2021]
    Keywords : ;

    Abstract : Various applications require the MOSFETs that work at a high temperature which is ambient operating temperature higher than 125 ℃. However, the traditional bulk MOSFETs at high temperature suffers from high leakage currents and threshold voltage shift, thus the performance of the bulk MOSFETs is severely degraded. READ MORE

  3. 22. Event-based High Resolution X-ray Imaging using Compton Coincidence Detection

    University essay from KTH/Medicinsk avbildning

    Author : Eva Bergström; [2021]
    Keywords : Photon counting CT; Compton scattering; Compton kinematics; coincidence detection; χ2 test; Fotonräknande CT; Compton-spridning; Compton-kinematik; sammanfallsdetektering; χ2 -test;

    Abstract : Research on photon counting detectors (PCDs) is focused on semiconductor materials, and silicon is a strong candidate to use in PCDs for photon counting computer tomography (CT). In a silicon detector, a significant portion of the counts is due to Compton scattering events. READ MORE

  4. 23. Towards a high resolution view of infrared line formation

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Martin Schmidt Montelius; [2021]
    Keywords : Spectroscopy; Near infrared; K giants; Galactic archeaology; Galactic chemical evolution; Abundances; Milky Way; Physics and Astronomy;

    Abstract : Observing in the infrared has many benefits, such as seeing through the interstellar dust in the galaxy, easier use of adaptive optics, and better flux ratios for direct observations of exoplanets. Before the infrared spectral range can be utilised for highly accurate stellar spectroscopy there is a need for a better understanding of both stellar modelling and the atomic physics that go into forming spectral lines. READ MORE

  5. 24. Evaluation of the Impact of X-ray Tube Voltage and Filter Thickness on the Performance of Spectral Photon-Counting Detectors

    University essay from KTH/Medicinteknik och hälsosystem

    Author : Cassandra Mannila; Marcus Larsson; [2021]
    Keywords : Photon Counting Detectors; X-ray Tube Voltage; Filter Thickness; Detective Quantum Efficiency; Optimizing; Fotonräknande detektorer; Rörspänning; Filtertjocklek; DQE; Optimering;

    Abstract : During the past years photon-counting detectors (PCDs) have emerged as an alternative to conventional energy-integrating detectors and may significantly improve the standard of care for computed tomography (CT). There are two main alternatives for the material of the detector: cadmium telluride (CdTe) and silicon (Si). READ MORE

  6. 25. Optical Study of Micro-Resonators with G-centers as an Active Medium

    University essay from KTH/Tillämpad fysik

    Author : Baptiste Lefaucher; [2021]
    Keywords : G-center; Silicon Photonics; Micro-Resonators Optics; Laser; Photo-Luminescence Spectroscopy; G-center; Kiselfotonik; Mikroresonatoroptik; Laser; Fotoluminescensspektroskopi;

    Abstract : The G-center has recently been identified as the first deterministic single-photon punctual emitter isolated in silicon. This discovery is of great interest for largescale quantum technologies, due to the abilities of silicon in terms of integration and scalability. READ MORE