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14 March 2023 Effects of LEO space exposure on GeSbTe phase-change metasurface spectral filters (Conference Presentation)
Kiumars Aryana, Hyun Jung Kim, Matthew Julian, Stephen E. Borg, Scott M. Bartram, William M. Humphreys
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Proceedings Volume 12417, Optical Components and Materials XX; 1241704 (2023) https://doi.org/10.1117/12.2648484
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
We report the results of the effect of prolonged low-Earth orbit exposure on phase-change materials (PCMs) and PCM-based metasurfaces. During a 6-month exposure as part of the Materials on the International Space Station Experiment (MISSE-14) test campaign led by NASA Langley Research Center, Ge2Sb2Te5 (GST) and GST-based metasurface spectral filters were monitored for their response to extreme temperature cycles, UV and ionizing radiation fluences, and atomic oxygen fluences. Upon return to Earth, the samples were characterized and compared to their pre-flight condition to glean insight into the effects of the space environment on metasurface performance and PCM optical and structural properties.
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Kiumars Aryana, Hyun Jung Kim, Matthew Julian, Stephen E. Borg, Scott M. Bartram, and William M. Humphreys "Effects of LEO space exposure on GeSbTe phase-change metasurface spectral filters (Conference Presentation)", Proc. SPIE 12417, Optical Components and Materials XX, 1241704 (14 March 2023); https://doi.org/10.1117/12.2648484
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KEYWORDS
Optical filters
Germanium antimony tellurium
Active optics
Astronomical imaging
Environmental monitoring
Ionizing radiation
Optical components
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