Dielectric Properties of Lyotropic Magnetic Liquid Crystal

P. Kopčanský a, L. Tomčoa,b, J. Jadzyn c, J. Swiergiel c, J. Majorošová a, M. Kubovčíková a, M. Timko a, M. Rajňák a, K. Šipošová a, Z. Gažová a, Z. Bednarikováa,d, N. Tomašovicová a, Chin-Kun Hu e, S. Hayryan e, I. Studenyak f, T.M. Kovalchuk g and O.V. Kovalchuk h aInstitute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovakia bFaculty of Aeronautics, Technical University, Košice, Slovakia cInstitute of Molecular Physics, Polish Academy of Sciences, Poznań, Poland dDepartment of Biochemistry, Institute of Chemistry, P.J. Safarik University in Košice, Slovakia eInstitute of Physics, Academia Sinica, 128 Sec.2, Academia Rd., Nankang, Taipei 11529, Taiwan fPhysics Faculty, Uzhhorod National University, Uzhhorod, 88000, Ukraine gInstitute of Semiconductor Physics, National Academy of Science of Ukraine, Kyiv, Ukraine hKyiv National University of Technologies and Design, Kyiv, Ukraine

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An important feature of lyotropic liquid crystals is the self-assembly of the amphiphilic molecules as supermolecular structures. We have studied the formation of nematic liquid crystal phase in solutions containing lysozyme amyloid fibrils and magnetic nanoparticles using oscilloscopic method. Interaction of fibrils with magnetic nanoparticles under the external magnetic field resulted in fibril re-arrangement. The analysis of the obtained results suggests that the decrease in conductivity of solutions in presence of magnetic field is due to decrease of the ion mobility caused by re-arrangement of structures in the solution. The obtained results allow determination of the optimum ratio of the components which can lead to preparation of solutions with a more ordered structure in presence of magnetic field.

DOI: 10.12693/APhysPolA.127.632 PACS numbers: 61.30.Gd, 61.30.St, 75.50.Mm