نتایج جستجو برای: magnetite nanoparticle
تعداد نتایج: 35851 فیلتر نتایج به سال:
We have studied the dynamic behavior of nanoparticles in ferrofluids consisting of single-domain, biogenic magnetite (Fe(3)O(4)) isolated from Magnetospirillum magnetotacticum (MS-1). Although dipolar chains form in magnetic colloids in zero applied field, when dried upon substrates, the solvent front disorders nanoparticle aggregation. Using avidin-biotin functionalization of the particles and...
Nanotechnologies have been proposed for a variety of environmental applications, including subsurface characterization, enhanced oil recovery, and in situ contaminant remediation. For such applications, quantitative predictive models will be of great utility for system design and implementation. Electrolyte chemistry, which can vary substantially within subsurface pore waters, has been shown to...
At present, the widespread use of iron oxide nanoparticles, including for commercial purposes, requires strict preservation their phase composition during application. The choice nanoparticle modifier and modification conditions is decisive due to high sensitivity oxygen in case using real (O2, pH change, etc.). In this work, we studied change magnetite nanoparticles after with 3-aminopropyltri...
A new development in small-angle neutron scattering with polarization analysis allows us to directly extract the average spatial distributions of magnetic moments and their correlations with three-dimensional directional sensitivity in any magnetic field. Applied to a collection of spherical magnetite nanoparticles 9.0 nm in diameter, this enhanced method reveals uniformly canted, magnetically ...
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