The prospects for applying magnetic smart materials combined with shape memory alloys to produce correctable and deployable space telescopes

Melville P. Ulmer, Mohammadreza Jalilvand, Nicholas A. Marks, D. B. Buchholz, Brooke Fujishima, Nicolas Guerra, Jian Cao, Y. W. Chung, T. B. Baturalp, V. L. Coverstone, S. P. Stagon, Giovanni De Vita, Jeffrey H. Dugard, Raj Vaidyanathan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The desirability of making deployable mirrors for space telescopes has been known for years. Yet, once the wave lengths are longer than the short wave radio, progress has been slow. Therefore, we are exploring a new technology based on using a magnetic smart material film deposited on a shape-memory alloy (SMA) sheet. Our preliminary result is that when we apply an about 0.1-0.35 T in-plane magnetic field, we can produce greater than micron deflections in the SMA. Furthermore, we have shown the SMA can return to shape to within 1 micron. We will present an update on how long these deflections can be maintained and our progress toward making the SMA surface smooth enough to produce specular reflection. In addition, we assess the brightness and shininess of the NiTi piece before and after heating that is needed to produce a return to shape.

Original languageEnglish (US)
Title of host publicationAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV
EditorsRamon Navarro, Roland Geyl
PublisherSPIE
ISBN (Electronic)9781510636897
DOIs
StatePublished - 2020
Externally publishedYes
EventAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV 2020 - Virtual, Online, United States
Duration: Dec 14 2020Dec 22 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11451
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV 2020
Country/TerritoryUnited States
CityVirtual, Online
Period12/14/2012/22/20

Keywords

  • Deployable Mirror
  • Mag-netic Smart Material
  • NiTi Shape-Memory Alloy (SMA)
  • Power Spectrum Density
  • Shininess

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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