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Engineered thin films with ultra-low thermal expansion coefficient for deployable or deformable space structures

Yamamoto, Namiko and Gdoutos, Eleftherios and Daraio, Chiara (2013) Engineered thin films with ultra-low thermal expansion coefficient for deployable or deformable space structures. In: 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2013-1789. ISBN 978-1-62410-223-3. http://resolver.caltech.edu/CaltechAUTHORS:20160303-152113967

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Abstract

We developed micro-structured thin films with ultra-low coefficient of thermal expansion. These low-weight, flexible, thermally stable films are expected to be a useful tool in aerospace applications, for example, as a reflective layers of deformable space telescope mirrors. The low-CTE films are composed of a Ti frame supporting hexagonal Al plates arranged in a two-dimensional periodic lattice. The effective CTE of these materials can be controlled by selecting the appropriate constitutent material properties of the frame and plates, and the geometry of the lattice. Aluminum and titanium were selected as constituent materials to create thin films with a CTE close to zero. The 2D bi-metallic lattice was microfabricated, and characterized for its thermal and optical functionalities. The effective CTE was confirmed to be ultra-low (-0.6×10^(-6)/°C), and the imaging capability of this metallic layer was evaluated in the range of temperature from room temperature to 150 °C.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.2514/6.2013-1789PublisherArticle
http://arc.aiaa.org/doi/abs/10.2514/6.2013-1789PublisherArticle
ORCID:
AuthorORCID
Daraio, Chiara0000-0001-5296-4440
Additional Information:© 2013 AIAA.
Group:Keck Institute for Space Studies
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Other Numbering System NameOther Numbering System ID
AIAA Paper2013-1789
Record Number:CaltechAUTHORS:20160303-152113967
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160303-152113967
Official Citation:Namiko Yamamoto, Eleftherios Gdoutos, and Chiara Daraio. "Engineered thin films with ultra-low thermal expansion coefficient for deployable or deformable space structures", 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Structures, Structural Dynamics, and Materials and Co-located Conferences, (AIAA 2013-1789). http://dx.doi.org/10.2514/6.2013-1789
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:65043
Collection:CaltechAUTHORS
Deposited By: Colette Connor
Deposited On:04 Mar 2016 20:21
Last Modified:23 Aug 2019 23:17

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