Share Email Print

Proceedings Paper

Surfaces that shed dust: unraveling the mechanisms
Author(s): Genevieve Devaud; Christina Haley; Christina Rockwell; Alex Fischer
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Tenacious adhesion of dust to surfaces in the vacuum environment of space is a significant obstacle to exploration and scientific discovery on the Moon, Mars and asteroids. Mitigating particle adhesion is also costly and difficult during semiconductor or optics processing on earth. Over the last eight years at Ball Aerospace and Technologies Corp (BATC), we have demonstrated the effectiveness of an ion beam process that dramatically reduces the adhesion of lunar simulant dust to quartz, glass, Kapton, Teflon and silicon surfaces in dry, ambient, and vacuum environments. Treated silvercoated Teflon coupons performed well in a space-simulated environment at NASA Glenn Research Center. Surface roughening on an Ångstrom-level scale was found to correlate well with reduced adhesion, as did contact angle hysteresis. The large difference in advancing and receding contact angles reflects topological and/or chemical heterogeneity. Differences in contact charging are not believed to be major players in dust adhesion reduction. The physical basis of the dust mitigating properties of these modified surfaces is believed to be substantially due to nanometer scale differences between treated and virgin surfaces. Lastly, because this process does not add material, unlike a lotus-like coating or the work function matching coating, nor does it require power like the electrodynamic screen, it is particularly attractive for optical or thermal control materials that cannot tolerate coatings or where power is not available.

Paper Details

Date Published: 9 September 2014
PDF: 15 pages
Proc. SPIE 9196, Systems Contamination: Prediction, Measurement, and Control 2014, 919603 (9 September 2014); doi: 10.1117/12.2062757
Show Author Affiliations
Genevieve Devaud, Ball Aerospace & Technologies Corp. (United States)
Christina Haley, Ball Aerospace & Technologies Corp. (United States)
Christina Rockwell, Ball Aerospace & Technologies Corp. (United States)
Alex Fischer, Ball Aerospace & Technologies Corp (United States)

Published in SPIE Proceedings Vol. 9196:
Systems Contamination: Prediction, Measurement, and Control 2014
Nancy Carosso; Joanne Egges, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?