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Thin Films with Ultra‐low Thermal Expansion
Author(s) -
Yamamoto Namiko,
Gdoutos Eleftherios,
Toda Risaku,
White Victor,
Manohara Harish,
Daraio Chiara
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201304997
Subject(s) - materials science , thermal expansion , thin film , optoelectronics , composite material , semiconductor , thermal , negative thermal expansion , low energy , range (aeronautics) , nanotechnology , atomic physics , physics , meteorology
Ultra‐low coefficient of thermal expansion (CTE) is an elusive property, and narrow temperature ranges of operation and poor mechanical properties limit the use of conventional materials with low CTE. We structured a periodic micro‐array of bi‐metallic cells to demonstrate ultra‐low effective CTE with a wide temperature range. These engineered tunable CTE thin film can be applied to minimize thermal fatigue and failure of optics, semiconductors, biomedical sensors, and solar energy applications.