A Passive Thermal Switch with Kirigami‐Inspired Mesostructures. Issue 6 (15th May 2019)

• Record Type: Journal Article
• Authors: Heo, Hyeonu; Li, Shouhang; Bao, Hua; Ju, Jaehyung
• Is Part Of: Advanced engineering materials. Volume 21:Issue 6(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-05-15
• Subjects: architected materials -- heat transfer -- Kirigami structures -- thermal management; Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201900225
• Languages: English
• ISSNs: 1438-1656

Abstract

Abstract : The objective of this work is to design a passive thermal switch with Kirigami‐inspired architected materials composed of bilayer hinges and to analyze thermomechanical and thermal performance at the ON/OFF states based on a composition of materials and geometry of metamaterials. Analytical models are constructed to determine the thermal deformation and heat transport of the metamaterial, followed by finite element‐based simulations. A two‐step design approach − i) selection of multi‐materials and ii) geometric modification of mesostructures provides a robust method for the design of a passive thermal switch with Kirigami‐inspired metamaterials. The mesostructures designed have potential as a passive thermal switch enabling to engineer a large thermal deformation, a small thermal resistance, and a sizable thermal switch ratio. With a systematic approach, this work demonstrates that Kirigami structures with multi‐materials can be potentially used for a tool of thermal transport. Abstract : Kirigami‐inspired mesostructures with bilayers have potential as a passive thermal switch enabling to engineer a large thermal deformation, a small thermal resistance, and a sizable thermal switch ratio. A two‐step design approach − i) selection of a mating material with a high conductive material in the reference geometry and ii) refining geometry − provides a robust method for the design.