Ferritins are a class of iron storage and mineralization proteins found throughout the animal, plant, and microbial kingdoms. Iron is stored within the protein shell of ferritin as a hydrous ferric oxide nanoparticle with a structure similar to that of the mineral "ferrihydrite." The eight hydrophilic channels that traverse the protein shell are thought to be the primary avenues by which iron g...

A specific absorption rate of a dilute assembly of various random clusters of iron oxide nanoparticles in alternating magnetic field has been calculated using Landau-Lifshitz stochastic equation. This approach simultaneously takes into account both the presence of thermal fluctuations of the nanoparticle magnetic moments and magneto-dipole interaction between the nanoparticles of the clusters. ...

Stable ruthenium nanoparticles protected by ferrocenecarboxylates (RuFCA) were synthesized by thermolytic reduction of RuCl3 in 1,2-propanediol. The resulting particles exhibited an average core diameter of 1.22 ± 0.23 nm, as determined by TEM measurements. FTIR and (1)H NMR spectroscopic measurements showed that the ligands were bound onto the nanoparticle surface via Ru-O bonds in a bidentate...

The aggregation of superparamagnetic iron oxide (SPIO) nanoparticles decreases the transverse nuclear magnetic resonance (NMR) relaxation time T2CP of adjacent water molecules measured by a Carr-Purcell-Meiboom-Gill (CPMG) pulse-echo sequence. This effect is commonly used to measure the concentrations of a variety of small molecules. We perform extensive Monte Carlo simulations of water diffusi...