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Adjustable and negative thermal expansion from multilayered systems
Author(s) -
Grima Joseph N.,
Oliveri Ludovica,
Ellul Brian,
Gatt Ruben,
Attard Daphne,
Cicala Gianluca,
Recca Giuseppe
Publication year - 2010
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201004076
Subject(s) - thermal expansion , negative thermal expansion , materials science , thermal , composite material , poisson's ratio , construct (python library) , poisson distribution , thermodynamics , mathematics , physics , computer science , statistics , programming language
A construct in the form of a multi‐layered system built from conventional materials having different mechanical and thermal properties is proposed. This construct can exhibit pre‐determined values of thermal expansion which could also be negative. It is shown that for maximising negative thermal expansion (NTE) there should be a combination of thin layers of stiff materials having a high positive coefficient of thermal expansion (CTE) bonded with thicker layers of a soft material having low CTE values and, more importantly, having Poisson's ratio as high as possible. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)