A single-crystal silicon micromirror for large bi-directional 2D scanning applications

  • Ankur Jain*
  • , Huikai Xie
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

This paper reports the design, fabrication and operation of a two-dimensional (2D) micromirror that can generate large bi-directional scans at low actuation voltages. This single-crystal silicon (SCS) micromirror device has been fabricated by using a unique DRIE CMOS-MEMS process that can simultaneously provide thin-film and SCS microstructures. A fabricated micromirror has negligible initial tilt angle, and can perform large bi-directional 2D optical scans (over ±30°) at less than 12 V dc. 2D dynamic scanning using this mirror has been demonstrated by obtaining a 14° × 50° angular raster scan pattern. This device can also perform vertical displacements up to 0.5 mm at about 15 V dc.

Original languageEnglish
Pages (from-to)454-460
Number of pages7
JournalSensors and Actuators A: Physical
Volume130-131
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 14 Aug 2006
Externally publishedYes

Keywords

  • Bi-directional scanning
  • Electrothermal actuation
  • Large rotation angle
  • Large vertical displacement
  • Optical scanner
  • Two-dimensional (2D) micromirror

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