Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"Bolometers"”.
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Rare-event searches with bolometers
Rare-event searches have played an integral part in the pursuit of physics beyond the Standard Model, offering us the chance to bridge the disparity between our current understanding and observed phenomena such as Dark Matter (DM) or the nature of neutrino masses. Over the last 30 years, these …
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Nanosecond Response-Time. Room Temperature Infrared Detection With Thin-Film Metal Bolometers
Made available in DSpace on 2014-12-10T19:07:11Z (GMT). No. of bitstreams: 1 7317507.pdf: 3838764 bytes, checksum: 2eb23bc60eec68cc83f66205b2e85087 (MD5) Previous issue date: 1973
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Thermal Imaging by Means of an Electron Beam Addressed Array of Infrared Bolometers
Made available in DSpace on 2014-12-12T20:54:37Z (GMT). No. of bitstreams: 1 7726679.pdf: 3083748 bytes, checksum: 9724b82574d5175e58e74c6d511a1989 (MD5) Previous issue date: 1977
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Applications of Low Temperature Bolometers to Reactor Neutrinos and Neutrinoless Double Beta Decay
Low temperature bolometers are a powerful tool for precise energy measurements. This thesis describes the application of bolometers to the detection of Coherent Elastic Neutrino-Nucleus Scattering (CEvNS) and Neutrinoless Double Beta Decay (0νββ). First, design, development, and feasibility studies …
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Fabrication of sensitive high-temperature superconducting bolometers on a yttria-stabilized zirconia membrane
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1995.
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Electromagnetic and Quasi-Optical Analysis of Cavity Coupled Bolometers for Far-Infrared and Terahertz Receivers
The primary concern of this thesis is the development of theoretical and computational techniques for the modelling of cavity coupled bolometric detectors for future millimetre wave and terahertz astronomical receivers. Hypersensitive bolometer based receivers will be required to answer current …
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Bolometer diagnostics on Alcator C-mod
… common to most tokamak fusion experiments. Bolometers are so widespread because they provide an important measure of the energy lost from confined plasmas as radiation, as well as being relatively simple and resilient in their construction. Here the bolometric diagnostics of the Alcator …
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Visible and Infrared Light Detection Using 2D Materials
… Diselenide (WSe₂) solar cells, ultrathin bolometers, and Bernal stacked bilayer graphene photoconductor devices for hyperspectral imaging within the 10 µm - 20 µm band. Specifically, schottky junction thin-film Platinum (Pt)/WSe₂/Gold (Au) were shown to exhibit large improvements in the …
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On the 1/f noise of atomic-layer-deposition metal films
… films. It has been employed to make detectors of bolometers. 1/f noise is a fundamental limit to the resolution. The experiments are designed to characterize the 1/f noise of the ALD fabricated Pt films. The measurement results show that for 7nm and 13nm ALD fabricated Pt films, 1/f noise is about …
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Use of Ion Implantation in the Construction of an Uncooled Microbolometer
Uncooled infrared (IR) bolometers have been constructed using a sensor bridge made of an electrically conductive polymer attached to a quartz substrate. The bridge is mounted on two sides and crosses an etched trough in the underlying substrate. Current is supplied to the bridge by means of two …
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Scalable 3D carbon nanotube structures for bolometric infrared sensor arrays
… novel method for fabricating suspended CNT-based bolometers, which is significantly better from a scalability point of view than literature CNT infrared sensors, and also requires fewer processing steps than conventional MEMS processes. CNTs can be grown in 3D structures, such as suspended …
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Dynamic Electrothermal Model of a Sputtered Thermopile Thermal Radiation Detector for Earth Radiation Budget Applications
… used for CERES consist of thin-film thermistor bolometers viewing the Earth through a Cassegrain telescope. The Thermal Radiation Group, a laboratory in the Department of Mechanical Engineering at Virginia Polytechnic Institute and State University, is currently studying a new sensor concept to …
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Thermal imaging and analysis of carbon nanotube composites
… from solar cells and transistors to bolometers and mechanical reinforcement additives for polymers. However, surprisingly little is still known about the thermal properties of such CNT films, and in particular about the intertube junctions. This study examines suspended films of …
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Characterization of gold black and its application in un-cooled infrared detectors
… both the methods. Initial experiments on VOx-Au bolometers showed that, gold black improved the responsivity by 42%. This work successfully establishes promising role of gold black coatings in commercial un-cooled infrared detectors.
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Electromagnetic Techniques for Analysis and Design of Ultra Sensitive Receivers for Far-Infrared Astronomy
… superconducting TES (transition edge sensor) bolometers that are typically used in far-IR receivers. Special attention is given to the integrating cavity backshorts that serve to increase pixel efficiency, and new designs for improved cavity geometries, which provide high coupling between the …
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Room-Temperature Terahertz Detection Based on Graphene and Plasmonic Antenna Arrays
… Other commercial THz detectors, like bolometers, are more sensitive but require liquid helium cooling. In this thesis, two types of room-temperature high-responsivity graphene-based THz detectors are presented, relying on the unique properties of graphene and the function of plasmonic …
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Vanadium Oxide Microbolometers with Patterned Gold Black or Plasmonic Resonant Absorbers
High sensitivity uncooled microbolometers are necessary to meet the needs of the next generation of infrared detectors, which seek low power consumption and production cost without sacrificing performance. Presented here is the design, fabrication, and characterization of a microbolometer with …
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Dispersive phonon imaging in III-V semiconductors
… with superconducting tunnel junctions and Al bolometers to probe both the high-frequency and low-frequency regimes, respectively. We find that large-k ballistic phonons give rise to distinct focusing patterns in all four types of crystals, with thicknesses varying between 0.4 and 0.8 mm. Due …
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Quasiparticle and Phonon Transport in Superconducting Particle Detectors
… junctions as thermometers for particle detecting bolometers.
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