Directional Heat Transfer by Anisotropic Liquid Crystal Networks
발표자
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초록
내용
To manage the problematic heat of electronic devices, liquid crystal (LC) monomer was newly synthesized for anisotropic thermal conducting (ATC) films. As a result of spectroscopy, scattering and thermal analyses, the synthesized monomer formed a smectic A mesophase between crystalline and isotropic phases. The ATC films photopolymerized in LC and isotropic phases exhibited outstanding thermal conductivity over 1 W/mK regardless of the molecular packing and orientation of LC monomer. The thermal conductivity of uniaxially oriented ATC films was estimated to be 2.5 W/mK that is amplified along the LC director. The highly thermal conducting ATC films can be used as an advanced thermal managing material. This work was supported by BK21 FOUR program, Basic Research Laboratory Program (2020R1A4A1018259), and Mid-Career Researcher Program (2016R1A2B2011041).