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Mapping temperature fields in 3D with x-ray diffraction and magnetic resonance imaging
Chalise, Darshan
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https://hdl.handle.net/2142/120377
Description
- Title
- Mapping temperature fields in 3D with x-ray diffraction and magnetic resonance imaging
- Author(s)
- Chalise, Darshan
- Issue Date
- 2023-04-19
- Director of Research (if dissertation) or Advisor (if thesis)
- Cahill, David G
- Doctoral Committee Chair(s)
- Abbamote, Peter
- Committee Member(s)
- Leal, Cecilia
- Sutton, Bradley P
- Department of Study
- Physics
- Discipline
- Physics
- Degree Granting Institution
- University of Illinois at Urbana-Champaign
- Degree Name
- Ph.D.
- Degree Level
- Dissertation
- Keyword(s)
- Thermometry
- 3d Imaging
- Mri
- X-ray Diffraction
- Language
- eng
- Abstract
- While there exist surface-based thermometry techniques that provide spatial resolution in nanoscale and temperature resolution in tens of millikelvins, there is a general lack of thermometry techniques that provide a full field 3-dimensional (3D) temperature information with excellent spatial, temporal and temperature resolution. 3D thermometry is, however, required in several biological and engineering systems. In this thesis, I present techniques to image temperature fields in two important engineering systems - 3D integrated circuits (3D ICs) and electrochemical energy storage devices – and in fluids which are of importance in both engineering and biology. In 3D ICs, I demonstrate how x-ray diffraction intensities can be used to simultaneously map temperature in different device layers. In electrochemical energy storage devices, namely proton exchange membrane (PEM) fuel cells and solid-state Li ion batteries, I discuss how magnetic resonance imaging (MRI) can be used for thermometry of the electrolyte layer and demonstrate the mapping of temperature and hydration in PEMs. In fluids, I demonstrate how the sensitivity of MR thermometry can be enhanced with the immersion of nanoparticles. For all these systems, I discuss the spatial, temporal and temperature resolution achieved with the demonstrated techniques and the potential ways to improve them. Finally, I discuss the applicability of electron paramagnetic resonance (EPR) imaging of n-type semiconductors for possible 3D thermometry in engineering and biology. In all the techniques presented, I also discuss the practicality and requirements for application of the technique in real world systems.
- Graduation Semester
- 2023-05
- Type of Resource
- Thesis
- Handle URL
- https://hdl.handle.net/2142/120377
- Copyright and License Information
- Copyright 2023 Darshan Chalise
Owning Collections
Graduate Dissertations and Theses at Illinois PRIMARY
Graduate Theses and Dissertations at IllinoisDissertations and Theses - Physics
Dissertations in PhysicsManage Files
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