Academic CentreMagnetic Soret effect and nanoparticle transfer in a porous layer.
Simultaneously with optical nanoparticle transfer phenomenon research, nanoparticle separation in non-isothermal flows and porous environments is also researched. In vertical flat channel thermo diffusion column a significant nanoparticle convective thermoforetic separation becomes obtainable. Within the institute non-stationary nanoparticle separation research, determining nanoparticle concentration from coil inductivity changes stationed in column end chambers, which is determined measuring resonating dynamics regime in an according LC oscillator.
1st image. Nanoparticle separation dynamics within thermo diffusion column
Thermo diffusion columns theoretical modal has been designed, in which combined thermic and nanoparticle separation process caused concentration convection is taken in account. In separation process initial stage particle concentration difference in column end develops as a simple 5/2 power function in time from which colloidal particle Soret coefficient is determinable. Measurements in presence of magnetic fields are burdensome because magnetic convection influences separation process within column, whose vortex structure is dependent on magnetic fields orientation. To eliminate magnetic convections troublesome effect, research of thermoforetic separation in porous layers is being made. It is proven that translations thermic separation in a thin colloid layer with permeable walls can significantly influence magnetic micro convection created specific wall grid elements. In porous layers, magnetic field parallel to temperature gradient creates nanoparticle separation changes, that significantly exceed theoretically prognosticated and magnetic Soret effect verified by optical experiments. Research is done to verify hypothesis suggested by the laboratory about the effects reverse magnetic osmosis to nanoparticle transfer.
2nd image. Experimental apparatus for research of thermoforetic nanoparticle transfer in a porous layer.
1st image. Nanoparticle separation dynamics within thermo diffusion column
Thermo diffusion columns theoretical modal has been designed, in which combined thermic and nanoparticle separation process caused concentration convection is taken in account. In separation process initial stage particle concentration difference in column end develops as a simple 5/2 power function in time from which colloidal particle Soret coefficient is determinable. Measurements in presence of magnetic fields are burdensome because magnetic convection influences separation process within column, whose vortex structure is dependent on magnetic fields orientation. To eliminate magnetic convections troublesome effect, research of thermoforetic separation in porous layers is being made. It is proven that translations thermic separation in a thin colloid layer with permeable walls can significantly influence magnetic micro convection created specific wall grid elements. In porous layers, magnetic field parallel to temperature gradient creates nanoparticle separation changes, that significantly exceed theoretically prognosticated and magnetic Soret effect verified by optical experiments. Research is done to verify hypothesis suggested by the laboratory about the effects reverse magnetic osmosis to nanoparticle transfer.
2nd image. Experimental apparatus for research of thermoforetic nanoparticle transfer in a porous layer.