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Melting of mesoscopic lattices of magnetic fluid thin film subjected to perpendicular fields |
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| Authors: | CC Shih YS Lin CY Wang IM Jiang MS Tsai CC Ting HE Horng |
| Institution: | aDepartment of Physics and Center for Nanoscience and Nanotechnology, National Sun Yat-sen University, Kaohsiung 804, Taiwan bDepartment of Applied Physics, National Chiayi University, Chaiyi 600, Taiwan cDepartment of Mechanical and Automation Engineering, I-Shou University, Kaohsiung 840, Taiwan dInstitute of Electro-optical Science and Technology, National Taiwan Normal University, Taipei 117, Taiwan |
| Abstract: | Applying a magnetic field on the magnetic fluid thin film perpendicularly, leads a phase separation that is concentrated in particles separating from a dilute phase. The concentrated phase forms cylindrical columns that construct two-dimensional lattices. This kind of artificial lattice is a novel mesoscopic system and has been explored with optical microscope, CCD, and digital imaging analysis. We explore the ordering evolution of the two-dimensional extraordinary lattice by varying the applied field. The ordering of these lattices is analyzed in terms of translational and bond-orientation correlation functions to address the two-dimensional melting. |
| Keywords: | Magnetic fluid Two-dimensional melting KT transition Bond-orientation order Hexatic phase |
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