Author ORCID Identifier

https://orcid.org/0000-0003-2658-4043

https://orcid.org/0000-0003-2105-641X

https://orcid.org/0000-0002-6984-6376

Document Type

Article

Publication Date

12-21-2021

College/Unit

Statler College of Engineering and Mining Resources

Department/Program/Center

Mechanical and Aerospace Engineering

Abstract

Herein we report 2D printing in microgravity of aqueous-based foams containing metal oxide nanoparticles. Such hierarchical foams have potential space applications, for example for in situ habitat repair work, or for UV shielding. Foam line patterns of a TiO2-containing foam have been printed onto glass substrates via Direct Foam Writing (DFW) under microgravity conditions through a parabolic aircraft flight. Initial characterization of the foam properties (printed foam line width, bubble size, etc.) are presented. It has been found that gravity plays a significant role in the process of direct foam writing. The foam spread less over the substrate when deposited in microgravity as compared to Earth gravity. This had a direct impact on the cross-sectional area and surface roughness of the printed lines. Additionally, the contact angle of deionized water on a film exposed to microgravity was higher than that of a film not exposed to microgravity, due to the increased surface roughness of films exposed to microgravity.

Source Citation

Cordonier, G.J., Sharafati, C., Mays, S. et al. Direct foam writing in microgravity. npj Microgravity 7, 55 (2021). https://doi.org/10.1038/s41526-021-00185-1

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.