Search Results - "Kopcanský, Peter"
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Electric field-induced assembly of magnetic nanoparticles from dielectric ferrofluids on planar interface
Published in Journal of molecular liquids (15-09-2022)“…[Display omitted] •Assembly of magnetic nanoparticles under electric fields is observed.•Under the electric field, the second adsorption layer is revealed and…”
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Morphology and Magnetic Structure of the Ferritin Core during Iron Loading and Release by Magnetooptical and NMR Methods
Published in ACS applied materials & interfaces (07-03-2018)“…Ferritins are proteins, which serve as a storage and transportation capsule for iron inside living organisms. Continuously charging the proteins with iron and…”
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Effect of magnetic nanoparticles on partial discharges in transformer oil
Published in Journal of magnetism and magnetic materials (15-02-2020)“…[Display omitted] •Based on transformer oil, low concentrated ferrofluids were prepared.•Partial discharge test were conducted at AC h.v.•Due to NPs the…”
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Magnetic pickering emulsions heated in a rotating magnetic field
Published in Journal of magnetism and magnetic materials (01-12-2022)Get full text
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5
Experimental study of AC breakdown strength in ferrofluid during thermal aging
Published in Journal of magnetism and magnetic materials (01-11-2018)“…•A transformer oil based ferrofluid was exposed to accelerated thermal aging.•Effect of ferrofluid decomposition has been observed.•The thermal aging has a…”
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The collective ordering of magnetic nanoparticles in a nematic liquid crystal
Published in Journal of magnetism and magnetic materials (01-01-2024)Get full text
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7
Structural changes in liquid crystals doped with spindle magnetic particles
Published in Physica. E, Low-dimensional systems & nanostructures (01-10-2021)“…A new composite ferronematic system based on the nematic liquid crystal 6CB doped with hematite spindle-like magnetic particles characterized with magnetic…”
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Tunable particle shells of thermo-responsive liquid marbles under alternating magnetic field
Published in Journal of molecular liquids (01-12-2023)“…•Liquid marbles were exposed to the elevated temperature under an alternating magnetic field.•An alternating magnetic field facilitated the evaporation of the…”
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9
Surface acoustic wave investigation of magnetic nanoparticle size and concentration effect on liquid crystal behavior
Published in The Journal of the Acoustical Society of America (01-06-2023)“…The effect of spherical magnetic nanoparticles with different size (5, 10, 15, and 20 nm) and volume concentration (10−3, 5 × 10−4, and 10−4) on liquid crystal…”
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Birefringence dispersion of 6CHBT liquid crystal determined in VIS-NIR spectral range
Published in Applied surface science (15-03-2021)“…[Display omitted] •Birefringence dispersion of pure 6CHBT liquid crystal in VIS and NIR is determined.•From the phase birefringence dispersion the group…”
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Structural changes in liquid crystals doped with functionalized carbon nanotubes
Published in Physica. E, Low-dimensional systems & nanostructures (01-09-2018)“…Structural changes induced by electric and weak magnetic fields in the nematic liquid crystal (6CHBT) doped with low concentration (1 × 10−3, 1 × 10−4,…”
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12
The influence of goethite nanorods on structural transitions in liquid crystal 6CHBT
Published in Journal of magnetism and magnetic materials (01-08-2018)“…•Composite system of liquid crystal 6CHBT doped with lath-like goethite magnetic nanoparticles.•Reduction of the magnetic Fréedericksz transition due to…”
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13
Comparison of physical properties of ferrofluids based on mineral transformer oil and bio-degradable gas-to-liquid oil
Published in Journal of magnetism and magnetic materials (01-01-2024)Get full text
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14
Tuning of Magnetic Hyperthermia Response in the Systems Containing Magnetosomes
Published in Molecules (Basel, Switzerland) (31-08-2022)“…A number of materials are studied in the field of magnetic hyperthermia. In general, the most promising ones appear to be iron oxide particle nanosystems. This…”
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15
Effect of electrical polarity on dielectric breakdown in a soft magnetic fluid
Published in Journal of magnetism and magnetic materials (01-03-2020)“…•Electrical breakdown test reveals the performance improvement of mineral oil due to magnetite nanoparticles.•Increasing the voltage rise rate results in…”
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16
Fréedericksz Transitions in 6CB Based Ferronematics—Effect of Magnetic Nanoparticles Size and Concentration
Published in Materials (05-06-2021)“…In this paper, results acquired from capacitance measurements performed on composites based on nematic liquid crystal 4-cyano-4′-hexylbiphenyl (6CB) and…”
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Acoustic spectroscopy of functionalized carbon nanotubes in magnetic fluid
Published in Journal of magnetism and magnetic materials (15-05-2020)“…[Display omitted] •fMWCTNs/Fe3O4 were diluted in the transformer oil.•The acoustic spectroscopy as the method of investigation was used.•The external…”
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18
Structure of nanoparticles in transformer oil-based magnetic fluids, anisotropy of acoustic attenuation
Published in Journal of magnetism and magnetic materials (15-08-2015)“…The anisotropy of acoustic attenuation in transformer oil-based magnetic fluids upon the external magnetic field was studied to discover the structure of…”
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The Impact of Redox, Hydrolysis and Dehydration Chemistry on the Structural and Magnetic Properties of Magnetoferritin Prepared in Variable Thermal Conditions
Published in Molecules (Basel, Switzerland) (18-11-2021)“…Ferritin, a spherically shaped protein complex, is responsible for iron storage in bacteria, plants, animals, and humans. Various ferritin iron core…”
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20
Ferromagnetic and antiferromagnetic liquid crystal suspensions: Experiment and theory
Published in Journal of molecular liquids (01-01-2021)“…In this paper, the complete theoretical and experimental studies of electrically and magnetically induced orientational transitions in suspensions of goethite…”
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