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Study of magnetorhelogic properties of liquid crystals doped with magnetic particles

Grant number: 12/04949-2
Support Opportunities:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): September 01, 2012
Effective date (End): August 31, 2013
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Daniel Reinaldo Cornejo
Grantee:Fabiana Rodrigues Arantes
Supervisor: Stefan Odenbach
Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Research place: Technische Universität Dresden (TU Dresden), Germany  
Associated to the scholarship:10/01655-2 - Systems of magnetic nanoparticles: experimental studies and Monte Carlo simulations, BP.DR


This project proposes to extensively study of magnetorhelogic properties of liquid crystals doped with magnetic particles. Sets of lyotropic liquid crystals doped with magnetic particles (ferrolyotropics), will be prepared. These sets will have different compositions of liquid crystal and different size of magnetic particles, ranging from nano to micrometer scale. The samples will be characterized magnetically employing traditional techniques such as magnetization and AC susceptibility measurements. The magnetic field dependent changes of the shear viscosity of the suspensions will be measured and will be compared with the behavior known from standard ferrofluids. The achieved results will be interpreted in the light of common interaction theories taking into account structure formation of the suspended magnetic material. (AU)

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