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Full-Text Articles in Physical Sciences and Mathematics
Analysis Of Far-Infrared Optical Spectra Of Multiferroics, Eric C. Standard
Analysis Of Far-Infrared Optical Spectra Of Multiferroics, Eric C. Standard
Dissertations
The optical spectra of multiferroic crystals Dy3Fe5O12, Tb3Fe5O12, and four hexagonal RMnO3 (5D= Er, Tm, Yb, Lu) are studied using intense bright synchrotonic light in the infrared spectral range. In regards to the materials analyzed, two rare earth iron garnets and four rare earth manganites in total are examined. These materials have attracted much attention due to their interesting magnetoelectric properties. They could serve as the basis for the next generation of faster and more energy efficient memory and logic devices. To examine these materials, two …
Mems Approaches In Infrared Imaging, George Papavieros
Mems Approaches In Infrared Imaging, George Papavieros
Theses
The design and performance simulation of a novel Microelectromechanical System (MEMS) based infrared detector, that utilizes coefficient of thermal expansion, is discussed. The detector design uses a variety of thermal expansion coefficient materials, including alloys which are connected to ambient through a thermal conducting bridge. The thermal flux, due to the incident IR photons, is determined by the Extended Blackbody Calculator (BBC). These materials are physically interfaced with different types of piezoelectric resonators, constructed using the MEMS process. The expansion due to heating, applies stress to the piezoelectric resonator material. This thermally induced stress forces the resonator to alter its …