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Synthesis of Fe3O4–graphene (FG) nanohybrids and magnetothermal measurements of FxG100–x (x = 0, 25, 45, 65, 75, 85, 100) nanohybrids (25 mg each) at a 633 kHz alternating magnetic field of strength 9.1 mT.

Nanoparticle hyperthermia treatment is progressing with the passage of time, and with the development in the field of hybrid nanoparticles synthesis. The transient heat transfer in magnetite–graphene nanocomposite in three dimension under conduction is studied during this research. The proposed model is simulated in finite element solver framework. Novel hybrid nanoparticles were synthesized. Their chemical properties and their heat transfer properties were examined. By mathematical modeling results, the effective hybrid nanoparticle is chosen that can be used as a drug in hyperthermia process. Current developments in nanotechnology have improved the ability to precisely modify the features and properties of MNPs for these biomedical applications. The accurate control on the magnetic properties of the particle is the key in hyperthermia applications. By these magnetic particles, wished temperature can be achieved for laser hyperthermia. In this paper, study is done for understanding the properties and novelty of the new nanoparticles. The merits and demerits of synthesized hybrid nanoparticles are also discussed either the composites can used as a drug or not.

Transport properties of liquid electrolyte-gated bilayer graphene (BLG) were investigated in the presence of scattering centers introduced post-growth. The scattering centers were realized by spin-deposition of phosphine stabilized gold nanoparticles (AuNPs) of different molar concentrations (10, 20, 30, and 40 nM) directly on top of the BLG surface. Electronic transport in such samples exhibits a cluster-like scattering behavior, that is, a decrease in charge carrier mobility accompanied by a shift of the Dirac point toward negative values with increasing density of scattering centers, indicating the n-type doping of graphene by AuNPs. The characteristic resistivity-gate voltage curves show the possibility of anti-ambipolar behavior of such gated BLG films. Drude model based Kinetic Monte Carlo (KMC) simulations agree with our experimental findings and theoretically predicted behavior. Our results support the possibility of a charge carrier modulation of graphene via foreign impurity scattering introduced on its surface, as well as by the means of large electrostatic fields obtained via the liquid electrolyte gating.