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MEMS micromirror characterization in space environments.

Byung-Wook Yoo1, Jae-Hyoung Park, I H Park

  • 1School of Electrical Engineering and Computer Science, Seoul National University, 301-1116(#007), Kwanak P.O. box 34, Seoul, 151-600, Republic of Korea.

Optics Express
|March 5, 2009
PubMed
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MEMS micromirrors were tested for space environments, showing no performance degradation. These reliable micromirrors are suitable for optical space systems, including satellites and the International Space Station.

Area of Science:

  • Space Engineering
  • Microelectromechanical Systems (MEMS)
  • Optical Systems

Background:

  • Space applications require robust optical components capable of withstanding harsh environmental conditions.
  • Microelectromechanical Systems (MEMS) micromirrors offer potential for advanced optical systems in space.
  • Characterization in simulated and actual space environments is crucial for validating component reliability.

Purpose of the Study:

  • To characterize the performance of MEMS micromirrors under various space environmental conditions.
  • To assess the suitability of these micromirrors for Earth observation missions on the International Space Station (ISS) and satellites.
  • To validate the reliability and performance retention of MEMS micromirrors after exposure to space-like stressors.

Main Methods:

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  • Testing micromirror performance against shock and vibration.
  • Evaluating stiction, outgassing (under depressurization and heating), and electrostatic charging effects.
  • On-site testing of a micromirror-equipped instrument aboard the ISS.

Main Results:

  • No degradation in MEMS micromirror performance was observed after comprehensive space environment testing.
  • The micromirrors demonstrated resilience to shock, vibration, and thermal/pressure changes.
  • Electrostatic charging effects did not adversely impact micromirror functionality.

Conclusions:

  • MEMS micromirrors exhibit excellent stability and reliability for space applications.
  • The tested micromirrors are validated for use in demanding optical space systems.
  • Successful ISS deployment confirms the suitability of these components for Earth observation missions.