SELF-ACTUATION ENABLED BY ANISOTROPIC VAN DER WAALS THERMAL CONDUCTION AND EXPANSION

Smart materials that can self-activate based on the material interface, generating a mismatch in the thermal and mechanical characteristics in response to variable environmental energy levels, allow for the development of intelligent and sustainable devices and systems. However, due to symmetric strain coupled with intrinsic isotropic heat transport at the material interface, their capacity to self-activate is fundamentally constrained, resulting in a restricted physical and sensory range as well as low mechanical durability. Unlike current 3-D materials frequently used in self-activation, 2-D materials offer a new way for in-plane thermal expansion without suffering from interfacial slip or structural deformation. This disclosure reports an anisotropic van der Waals thermal transfer and asymmetric expansion at a material interface enabling significantly enhanced self-actuation by interfacial a molybdenum disulfide (MoS2) layer (IML) within a metal-elastic structure.


» Number: WO2025160009A1 (A1)

» Publication Date: 31/07/2025

» Applicant: SAUDI ARAMCO TECH COMPANY?[SA]; THE REGENTS OF THE UNIV OF MICHIGAN?[US]

» Inventor: PARK YOUNG GEUN?[US]; LEE SOMIN EUNICE?[US] (3)

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This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737


                   




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