Search for dissertations about: "bolometer"

Showing result 1 - 5 of 35 swedish dissertations containing the word bolometer.

  1. 1. Ultrasensitive Cold-Electron Bolometer

    Author : Ian Jasper Agulo; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; responsivity; electron cooling; cold-electron bolometer CEB ; SIN tunnel junctions; superconducting cold-electron bolometer SCEB ; noise equivalent power;

    Abstract : The Cold-Electron Bolometer (CEB) is an ultrasensitive device designed for the detection of cosmic microwave background radiation. The key to its sensitivity is the electron cooling of the absorber by the superconductor-insulator-normal metal (SIN) tunnel junction. READ MORE

  2. 2. Frequency Selective Cold-Electron Bolometer Arrays

    Author : Sumedh Mahashabde; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; mm-wave detectors; Cold-Electron Bolometer; Frequency Selective Surface; Focal Plane array; OLIMPO; LSPE;

    Abstract : This work presents the integration of the Cold-Electron Bolometer (CEB) in Frequency Selective Surface (FSS) based arrays targeting balloon-borne telescope missions with high incident power requirements (typically tens of pW). FSS are planar frequency sensitive structures typically consisting of repeating pattern of a simple motif like square, circle, etc. READ MORE

  3. 3. Antenna Integrated Superconducting Mixers

    Author : Hans Ekström; Chalmers University of Technology; []
    Keywords : tapered slotline antenna; mixer; double dipole antenna; superconducting; hot electron; receiver; Niobium; bolometer; trilayer junction; edge junction; Niobium Nitride; SIS;

    Abstract : This thesis investigates the prospects of some different superconducting mixers integrated with planar antennas for the millimeter and submillimeter regime. Two kinds of Superconductor/Insulator/Superconductor (SIS) tunnel junctions for use in mixers have been fabricated; Nb/PbBi edge junctions and Nb trilayer junctions. READ MORE

  4. 4. Towards graphene-based devices: Fabrication and characterization

    Author : Niclas Lindvall; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Synthesis; Chemical vapor deposition; Mechanical cleaning; Aharonov-Bohm effect; Graphene; Ferroelectric; Bolometer;

    Abstract : Graphene is a new material with a large set of impressive properties, interesting both for fundamental studies and applications. Reliable synthesis of large-scale, high-quality graphene is key to its future success. READ MORE

  5. 5. Application of SiGe(C) in high performance MOSFETs and infrared detectors

    Author : Mohammadreza Kolahdouz Esfahani; Henry Radamson; Ya-Hong Xie; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Silicon Germanium Carbon SiGeC ; Reduced Pressure Chemical Vapor Deposition RPCVD ; Epitaxy; Pattern Dependency; MOSFET; Mobility; bolometer; Quantum Well; Infrared IR Detection; Ni Silicide; High Resolution X-ray Diffraction HRXRD ; High Resolution Scanning Electron Microscopy HRSEM ; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Abstract : Epitaxially grown SiGe(C) materials have a great importance for many device applications. In these applications, (strained or relaxed) SiGe(C) layers are grown either selectively on the active areas, or on the entire wafer. READ MORE