Transisi Keadaan Defect-Non Defect pada Konveksi Listrik Kristal Cair Nematic Homeotropic dibawah Pengaruh Medan Magnet (Halaman 12 s.d. 15)

https://doi.org/10.22146/jfi.24416

Fahrudin Nugroho(1*), Yoshiki Hidaka(2), Tatsuhiro Ueki(3), Shoichi Kai(4)

(1) Jurusan Fisika, Fakultas Mematika dan Ilmu Pengetahuan Alam, Universitas Gadjah Mada, Indonesia
(2) Deparment of Applied Quantum Physics and Nuclear Engineering, Faculty of Engineering, Kyushu University, Japan
(3) Deparment of Applied Quantum Physics and Nuclear Engineering, Faculty of Engineering, Kyushu University, Japan
(4) Deparment of Applied Quantum Physics and Nuclear Engineering, Faculty of Engineering, Kyushu University, Japan
(*) Corresponding Author

Abstract


Dalam penelitian kali ini akan dikaji fenomena konveksi listrik kristal cair nemaik homeotropik dibawah pengaruh medan magnet luar. Dalam percobaan dapat diamati fenomena munculnya defect pada soft mode turbulence yaitu spatiotemporal chaos akibat interaksi moda  konveksi listrik dengan moda Nambu-Goldstone. Dapat diamati bahwa terjadi transisi keadaan defect ke keadaan non defect yang terjadi pada medan magnet kritis tertentu Hc = 450 G. Lebih lanjut dengan pengamatan cross polarizer telah berhasil dijelaskan femonena terjadinya transisi dari keadaan defect ke non defect tersebut. Hal itu diakibatkan oleh tertekannya kebebasan berotasi dari kristal cair nematik.


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DOI: https://doi.org/10.22146/jfi.24416

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