TY - JOUR
T1 - Stable membrane candidate for deployable membrane space telescopes
AU - Baturalp, Turgut B.
AU - Rodriguez, Luis
AU - Coverstone, Victoria L.
AU - Coppejans, Rocco
AU - Cao, Jian
AU - Chung, Yip Wah
AU - Buchholz, D. Bruce
AU - Ulmer, Melville P.
N1 - Funding Information:
We thank Dr. Chad Joshi for inventing the original idea of using an MSM film for surface figure modification and Dr. Giovanni Pareschi for bringing Dr. Joshi’s work to our attention. This work was supported primarily by NASA adaptive x-ray optics (Grant No. NNX16AL31G) plus support from a NASA NIAC (Grant No. NX15AL89G). We also thank the ISEN Center at Northwestern University for providing funds for purchasing additional sputtering guns. This work made use of the EPIC facility of Northwestern University's NUANCE Center, which has received support from the Soft and Hybrid Nanotechnology Experimental (SHyNE) resource (Grant No. NSF ECCS-1542205); the MRSEC program (Grant No. NSF DMR-1121262) at the Materials Research Center; the International Institute for Nanotechnology (IIN); the Keck Foundation; and the State of Illinois, through the IIN. Special acknowledgement and thanks is extended to the Illinois Space Grant Consortium for providing support via the Northwestern Summer University Undergraduate Research Program to Z.J.S and W.H.R.
Publisher Copyright:
© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE).
PY - 2020/7/1
Y1 - 2020/7/1
N2 - Larger mirrors are needed to satisfy the requirements of the next generation of UV-Vis space telescopes. Our study attempts to meet this requirement by demonstrating a technology that would deploy a large, continuous, high figure accuracy membrane mirror. The figure of the membrane mirror is corrected after deployment using a contiguous coating of a magnetic smart material (MSM) and a magnetic field. The MSM is a magnetostrictive material that is operable by magnetic write head(s), locally imposed on the nonreflective side of the membrane mirror. We report preparation, figure accuracy, stress analysis, and stability of the MSM coated CP1 polyimide substrate membrane mirror. The figure accuracy and magnetostrictive performance of the MSM coated membrane mirror are measured; furthermore, stability of the CP1 membrane for 48 h is observed and the results are found to be promising. In addition to membrane coating and the experimental procedure, the results of the surface profiling experiments are introduced and discussed.
AB - Larger mirrors are needed to satisfy the requirements of the next generation of UV-Vis space telescopes. Our study attempts to meet this requirement by demonstrating a technology that would deploy a large, continuous, high figure accuracy membrane mirror. The figure of the membrane mirror is corrected after deployment using a contiguous coating of a magnetic smart material (MSM) and a magnetic field. The MSM is a magnetostrictive material that is operable by magnetic write head(s), locally imposed on the nonreflective side of the membrane mirror. We report preparation, figure accuracy, stress analysis, and stability of the MSM coated CP1 polyimide substrate membrane mirror. The figure accuracy and magnetostrictive performance of the MSM coated membrane mirror are measured; furthermore, stability of the CP1 membrane for 48 h is observed and the results are found to be promising. In addition to membrane coating and the experimental procedure, the results of the surface profiling experiments are introduced and discussed.
KW - deployable membrane telescopes
KW - magnetostrictive materials
KW - membrane mirrors
KW - smart materials
KW - space telescopes
KW - surface profiling
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U2 - 10.1117/1.JATIS.6.3.034001
DO - 10.1117/1.JATIS.6.3.034001
M3 - Article
AN - SCOPUS:85092712007
SN - 2329-4124
VL - 6
JO - Journal of Astronomical Telescopes, Instruments, and Systems
JF - Journal of Astronomical Telescopes, Instruments, and Systems
IS - 3
M1 - 034001
ER -