A5085526738- Characterization and Applications of Magnetic Nanoparticles
- Magnetic Properties and Synthesis of Ferrites
- Nanoparticle-Based Drug Delivery
- Iron oxide chemistry and applications
- Power Transformer Diagnostics and Insulation
- Geomagnetism and Paleomagnetism Studies
- Nanofluid Flow and Heat Transfer
- Vibration Control and Rheological Fluids
- Minerals Flotation and Separation Techniques
- Magnetic Properties and Applications
- Magnetic properties of thin films
- Magneto-Optical Properties and Applications
- Tribology and Lubrication Engineering
- Magnetic and Electromagnetic Effects
- Electrostatics and Colloid Interactions
- Corrosion Behavior and Inhibition
- Microfluidic and Bio-sensing Technologies
- NMR spectroscopy and applications
- Surfactants and Colloidal Systems
- Nanoparticles: synthesis and applications
- Random lasers and scattering media
- Neural Networks and Reservoir Computing
- ZnO doping and properties
- Fluid Dynamics and Vibration Analysis
- Theoretical and Computational Physics
Charotar University of Science and Technology
2016-2025
Patel Hospital
2017-2023
Indian Institute of Technology Gandhinagar
2009-2012
Maharaja Sayajirao University of Baroda
2004-2009
Bhavnagar University
1999-2008
KTH Royal Institute of Technology
2006-2007
Stockholm University
2007
Gujarat University
2004
Magnetite nanofluid is synthesized using continuous chemical process. Powder x-ray diffraction and transmission electron microscopy show single phase spinel structure with size of 9.83 9.9 nm, respectively. Thermal conductivity magnetite has been studied as a function transverse magnetic field temperature. We found almost 30% enhancements in thermal for 4.7% volume fraction under field. This result explained on the basis formation three-dimensional zipperlike nanoparticles inside fluid. The...
Indium oxide is chosen as the host material for doping Ti, V, and Cr transition metal ions. Theoretical calculations based on density functional theory within a local spin approximation show that V–V separation of 5.6Å more stable with strong ferromagnetic coupling. Our clearly predict substitution vanadium indium should yield ferromagnetism in In2O3. Experimentally, (In0.95TM0.05)O3 (TM=Ti,V,Cr) were prepared using sol-gel well solid state reaction methods. Superconducting quantum...
Abstract Self-regulating temperature-controlled nanoparticles such as Mn–Zn ferrite based magnetic fluid can be a better choice for hyperthermia because of its controlled regulation temperature window 43–45 °C. To test this hypothesis with said properties was synthesized, and effect on cervical breast cancer cell death studied. We found that the °C maintained one hour at smallest possible concentration 0.35 mg/mL without altering field applicator parameters. Their hyperthermic HeLa MCF7...
Magnetically induced diffraction patterns by micron sized magnetic spheres dispersed in a ferrofluid disappear at certain critical field. This field is found to depend on the concentration of and volume spheres. We attribute this effect zero forward scattering as predicted Kerker, Wang, Giles [J. Opt. Soc. Am. 73, 765 (1983)]. suggest that such dispersion can be used study optical analogues localization electrons condensed matter, Hall effect, anisotropic diffusion, etc. The combination will...
A ternary system of Mn0.5Zn0.5Fe2O4 has been synthesized for the first time using thermal decomposition metal acetylacetonate in presence a high temperature boiling point solvent and fatty acids. Unlike results synthesis this material by other techniques, we obtain nearly monodispersed nanoparticles, rendering them ideal applications like hyperthermia. The crystal structure morphology particles obtained x-ray diffraction (XRD) transmission electron microscopy (TEM) are those single phase...
Static and dynamic magnetic properties of oleic acid/oleyamine coated Mn–Zn ferrite nanoparticles diameter 82 Å are reported. The zero-field-cooled peak temperature decreases with increasing field obeys the well known de Almeida–Thouless line. magnetization data simulated by assuming noninteracting particles uniaxial anisotropy lognormal particle size distribution. relevant parameters give values (D) 80 Å, standard deviation 0.3 in ln(D), constant K to be 5.8×105 erg/cm3. observed higher...
Two different magnetic nanofluids comprising of magnetite and Mn-Zn ferrite particles were synthesized in light hydrocarbon oil using continuous chemical process. Powder XRD TEM image show single phase spinel structure with size 10 nm 6.7 nm, respectively for ferrite. Thermal conductivity has been studied as a function volume fraction under transverse field. Magnetite nanofluid shows 17% enhancements thermal 4.7% while 45% enhancement at 10% fraction. In presence field the further from to...
Abstract Background Magnetic fluid hyperthermia (MFH) is a successful nanotechnology application in recent decade where biocompatible magnetic used to kill cancer cells controlled heating using AC field. In the present study, two ferrite-based fluids, with and without surfactant coating, were synthesized study effect of outer layer nanoparticles on cervical cells. The coating (MFWI) was made stable by providing negative charge surface each particle. On other hand, lauric acid as have...
Here, we report the design of a hybrid inorganic/organic mesoporous material through simultaneous pore engineering and hydrophobic surface modification intramesochannels to improve uptake superparamagnetic maghemite nanocrystals via impregnation techniques. The SBA-15 type was functionalized in situ with thiol organo-siloxane groups. Restricting addition 2 mol % yielded an characterized by large pores well-ordered hexagonal p6mm mesophase. promoted incorporation 7.5 nm (gamma-Fe2O3)...
Abstract In electrical engineering, the heat transfer can be enhanced by changing thermophysical properties of insulating oils. this paper, a single-phase power transformer with nominal 5 kVA is subjected to temperature rise test three different liquids. The first carried out novel gas-to-liquid oil applied as cooling and medium. other tests are conducted ferrofluids based on MnZn ferrite nanoparticles low high nanoparticle concentration. characterized magnetization curves, magnetic...