Directional Thermal Conducting Materials with Anisotropic Heat Transfer
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초록
내용
The demand for developing thermal managing materials to dissipate the heat effectively in electronic devices, a rod-shaped polymerizable liquid crystal (PLC) was designed. From the thermal and structural analyses, it was realized that PLC exhibited a smectic A mesophase. Controlling the temperature, thermally conductive films were fabricated at both smectic A and isotropic phases. Due to the mesogenic core enhancing phonon transfer, both PLC films showed high thermal conductivity over 1 W/mK. In addition, the uniaxially oriented film can be fabricated under the magnetic field. It showed more improved thermal conductivity and heat dissipation performance than conventional organic materials. The PLC films with high thermal conducting properties open up opportunities for advanced heat managing materials. This work was supported by the BK21 FOUR program, Mid-Career Researcher Program (2021R1A2C2009423), and Creative Materials Discovery Program (2020M3D1A2100779).