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

TitleA single-crystal silicon micromirror for large bi-directional 2D scanning applications
Publication TypeJournal Article
Year of Publication2006
AuthorsJain, A., and H. Xie
JournalSensors and Actuators A: Physical
Volume130-131
Pagination454 - 460
Date Published08/2006
ISSN09244247
KeywordsBi-directional scanning; Electrothermal actuation; Large rotation angle; Large vertical displacement; Optical scanner; Two-dimensional (2D) micromirror
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.

URLhttp://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6THG-4HMNFYD-1&_user=2139813&_coverDate=08/14/2006&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_acct=C000054276&_version=1&_urlVersion=0&_userid=2139813&md5=0a448309433
DOI10.1016/j.sna.2005.10.030
Short TitleSensors and Actuators A: Physical