TY - GEN
T1 - Engineered thin films with ultra-low thermal expansion coefficient for deformable space structures
AU - Yamamoto, Namiko
AU - Gdoutos, Eleftherios
AU - Daraio, Chiara
N1 - Funding Information:
The authors acknowledge Prof. Craig A. Steeves from University of Toronto, Mr. Keith Patterson from California Institute of Technology, Dr. Risaku Toda, Dr. Victor White, Dr. Harish Manohara, and Dr. James Breckinridge from Jet Propulsion Laboratory, and Ms. Elisha Byrne from the Correlated Solutions, Inc. for helpful discussions and technical assistance. This work was supported by the Keck Institute for Space Studies and Center Innovation Funds (CIF) from Jet Propulsion Laboratory.
Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/84880838048
UR - https://www.scopus.com/pages/publications/84880838048#tab=citedBy
U2 - 10.2514/6.2013-1789
DO - 10.2514/6.2013-1789
M3 - Conference contribution
AN - SCOPUS:84880838048
SN - 9781624102233
T3 - 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
BT - 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
T2 - 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Y2 - 8 April 2013 through 11 April 2013
ER -