Accelerated Sedimentation Velocity Assessment for Nanowires Stabilized in a Non-Newtonian Fluid

摘要: In this work, the long-term stability of titanium oxide nanowire suspensions was accessed by an accelerated sedimentation with centrifugal forces. Titanium (TiO2) nanoparticle (NP) and (NW) dispersions were prepared, their sizes carefully characterized. To replace time-consuming visual observation, velocities TiO2 NP NW measured using analytical centrifuge. For aqueous suspension, linearly dependent on relative forces (RCF), as predicted classical Stokes law. A similar linear relationship also found in case suspensions. However, NWs preferred to settle parallel direction under high RCF because lower flow resistance along long axis. Thus, extrapolated velocity regular gravity can be overestimated. Finally, a stable suspension formulated shear thinning fluid and...