The structure of this newly prepared Fe3O4-rGOQD-naphthalene-2-SO3H was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), energy-dispersive spectroscopy (EDX. With these nanocomposites, we demonstrate that broad temporal optical limiting can be accomplished with low limiting threshold. In this research, synthesis of a novel magnetic 2-naphthalenesulfonic acid-grafted reduced graphene oxide quantum dot (Fe3O4-rGOQD-naphthalene-2-SO3H) via a five-step procedure has been described. The FTIR results indicate that the surface of the Fe 3 O 4 nanoparticles are coated organic matter. The distribution of nanoparticles in magnetic fluid is obtained by transmission electron microscope (TEM) and granularity analyzer. linoleic acid, oleic acid and stearic acid. The XRD pattern confirms that the Fe 3 O 4 nanoparticles belong to cubic structure. To understand the impact of surfactants on stability, we prepare kerosene-based magnetic fluid with Fe 3 O 4 magnetic nanoparticles (MNPs) using different surfactants i.e. Hence, 2,5-dibromobenzene-1,3-thiol can be a good candidate for spintronic applications. We report the observation of optical limiting in Fe3O4-Ag nanocomposites in solution. The Fe 3 O 4 nanoparticle diameters increased with increase of PEG content and PEG molecular weight under the case of other unchanged reaction conditions. Among these molecules, the 2,5-dibromobenzene-1,3-thiol molecular junction shows a higher magnetoresistance effect than 4,6‐dibromobenzene‐1,3‐dithiol and 2,4‐dibromobenzene‐1,3‐dithiol. Under the applied bias, we observed a variation of spin up and spin down transmission which leads to magnetoresistance effect in these molecular junctions. The projected density of states of the molecule and the total density of states shows that these molecules have good coupling with the electrode. of these molecular junctions to understand the nature of electron transport. We have calculated several parameters such as the density of states, current–voltage characteristic, magnetoresistance effect etc.
#FE3O4 QUANTUMWISE SOFTWARE#
The Density Functional Theory (DFT) combined with Non-Equilibrium Green's Function (NEGF) utilized to investigate the spin-dependent electron transport properties of positional isomers namely 4,6‐dibromobenzene‐1,3‐dithiol 2,4‐dibromobenzene‐1,3‐dithiol and 2,5-dibromobenzene-1,3-dithiol. software simulation nanoelectronics atomic-scale modeling Nanotechnology Design. The electron transport in such junction highly depends upon the structure of the molecule. Understanding the spin-dependent electron transport through a single molecular junction will provide in-depth knowledge to construct efficient molecular spintronic devices. Int.J. (2015) 4(8): 379-386 379 Review Article Nanoparticle Characterization and Application: An Overview P.