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arxiv: 1607.03911 · v1 · pith:CVHSO2OTnew · submitted 2016-07-13 · ❄️ cond-mat.soft

Thermal diode made by nematic liquid crystal

Djair Melo (Instituto de F\'isica , Universidade Federal de Alagoas , Macei\'o , AL , Brazil) , Ivna Fernandes (Instituto de F\'isica , Fernando Moraes (Departamento de F\'isica , CCEN
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Universidade Federal da Para\'iba Jo\~ao Pessoa Pb Brazil Departamento de F\'isica Universidade Federal Rural de Pernambuco Recife PE S\'ebastien Fumeron (Institut Jean Lamour Universit\'e de Lorraine Vand{\oe}uvre les Nancy France) Erms Pereira (Escola Polit\'ecnica de Pernambuco Universidade de Pernambuco
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classification ❄️ cond-mat.soft
keywords thermalanchoringcapillarycrystaldiodeliquidmadenematic
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This work investigates how a thermal diode can be designed from a nematic liquid crystal confined inside a cylindrical capillary. In the case of homeotropic anchoring, a defect structure called escaped radial disclination arises. The asymmetry of such structure causes thermal rectification rates up to 3.5\% at room temperature, comparable to thermal diodes made from carbon nanotubes. Sensitivity of the system with respect the heat power supply, the geometry of the capillary tube and the molecular anchoring angle is also discussed.

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