AAS 200th meeting, Albuquerque, NM, June 2002
Session 63. Future Airborne and Space Instruments
Display, Wednesday, June 5, 2002, 10:00am-7:00pm, SW Exhibit Hall

[Previous] | [Session 63] | [Next]

[63.03] Programmable 2D masks for the NGST NIRSpec.

S. H. Moseley, K. A. Blumenstock (NASA / GSFC), T. C. Chen (GST/NASA/GSFC), A. Ewin (NASA/GSFC), R. K. Fettig, D. E. Franz (RITSS/GSFC/NASA), J. Hein, C. Kotecki (NASA/GSFC), A. S. Kutyrev (SSAI/GSFC/NASA), J. Laughlin, M. J. Li (NASA/GSFC), A. J. Bier (GST/GSFC/NASA), D. B. Mott (NASA/GSFC), D. A. Rapchun (GST/GSFC/NASA), D. S. Schwinger, R. Silverberg, S. Manthripragada, R. P. Wesenberg (NASA/GSFC), C. Zincke, Y. Zheng (QSS/GSFC/NASA)

We are developing a programmable large format field mask for the NGST Near Infrared Spectrometer (NIRSpec). The array is a megapixel scale Micro-Electro-Mechanical Systems (MEMS) device comprized of 100 um x 100 um shutters. The actuation is performed magnetically by interaction between the magnetic field of a magnet swept below the shutter array and the high permeability magnetic layer deposited on the shutters. Addressing and latching is done electristatically by applying a voltage between the shutters and a metal coating deposited on the vertical walls of a silicon grid that supports the shutters. The addressing is performed in a cross point addressing scheme.

Modeling of the shutters mechanical properties and overall behavior of the system, including stresses and metal fatigue continues. The results of that study will be verified by shutters lab tests. Major milestones have been achieved in the last few month through the demonstation of cryogenic actuation and hold of the shutters and the successful cryogenic operation of the shift registers required for array addressing.

This project is supported by NASA funding.

If you would like more information about this abstract, please follow the link to http://bram.gsfc.nasa.gov/ms_webpage/ms_animation.html. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

[Previous] | [Session 63] | [Next]

Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.