Laser opto-microactuators rotated by molecular gas dynamics effects

Author

Ota, M. ; Nakao, T. ; Sakamoto, M.

Author_Institution

Dept. of Mech. Eng., Tokyo Univ., Japan

fYear

1998

fDate

20-24 July 1998

Abstract

Summary form only given. Laser opto-microactuators are discussed in this study. The actuators are rotated by the effects of molecular gas dynamics such as the forces by a thermal creep force and a radiometric force. The effects are induced by heating of the rotor surface of the actuators with a laser beam. It is elucidated that the maximum torque of the actuators occurs at the Knudsen number of about 0.2 and the maximum rotational rate of the actuators is at the Knudsen number of 0.5. The Knudsen number is defined as the ratio of the mean free path length of the gas in the chamber to the rotor blade length of the actuators.

Keywords

actuators; laser beam applications; laser beam effects; micro-optics; micromechanical devices; Knudsen number; laser beam heating; laser opto-microactuator rotation; maximum rotational rate; maximum torque; mean free path length; molecular gas dynamics; molecular gas dynamics effects; radiometric force; rotor blade length; rotor surface heating; thermal creep force; Actuators; Blades; Creep; Gas lasers; Heating; Laser beams; Radiometry; Surface emitting lasers; Thermal force; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Broadband Optical Networks and Technologies: An Emerging Reality/Optical MEMS/Smart Pixels/Organic Optics and Optoelectronics. 1998 IEEE/LEOS Summer Topical Meetings

Conference_Location

Monterey, CA, USA

Print_ISBN

0-7803-4953-9

Type

conf

DOI

10.1109/LEOSST.1998.689736

Filename

689736