This CIF focuses on development of phononic metamaterials for space-worthy, large format arrays of ultra-low-noise, uniform, and vibration tolerant thermal detectors. The goal is to demonstrate the first phononic-isolated, transition edge sensors (TES) in a 3x3 test array. The proposed phononic structures will have the distinct advantages of greater sensitivity and low noise over existing designs for the next-generation of space-based astronomical observatories.
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