Resovist originally developed as a clinical liver contrast agent for Magnetic Resonance Imaging exhibits also an outstanding performance as a tracer in Magnetic Particle Imaging (MPI). In order to study the physical mechanism of the high MPI performance of Resovist, we applied asymmetric flow field–flow fractionation (A4F) and static magnetic fractionation (SMF) to separate Resovist into a set ...

Undulatory swimming is a widespread propulsion strategy adopted by many small-scale organisms including various single-cell eukaryotes and nematodes. In this work, we report a comprehensive study of undulatory locomotion of a finite filament using (i) approximate resistive force theory (RFT) assuming a local nature of hydrodynamic interaction between the filament and the surrounding viscous liq...

This study demonstrates the suitability of microfluidic structures for high throughput blood cell analysis. The microfluidic chips exploit fully integrated hydrodynamic focusing based on two different concepts: Two-stage cascade focusing and spin focusing (vortex) principle. The sample--A suspension of micro particles or blood cells--is injected into a sheath fluid streaming at a substantially ...

Pressure-driven flow through a channel with membrane walls is modeled for high particulate volume fractions of 10%. Particle transport is influenced by Brownian diffusion, shear-induced diffusion, and convection due to the axial crossflow. The particles are also subject to electrostatic double layer repulsion and van der Waals attraction, from both particle-particle and particle-membrane intera...

The occurrence and proliferation of reef-forming corals is vast importance in terms the biodiversity they support ecosystem services provide. complex three-dimensional structures engineered by are comprised both live dead coral, function, growth stability these systems will depend on ratio both. To model how : coral may change, ‘Goldilocks Principle’ can be used, where organisms only flourish i...

Among the microfluidic separation methods, hydrodynamic spreading is a simple and high-throughput continuous separation technique based on the difference in size. However, it is difficult to adjust tiny pressure differences accurately in microfluidic devices. In this study, a combination of electroosmotic flow (EOF) and hydrodynamic flow spreading was employed to tune the size separation of par...

Orbital-free molecular dynamics is used to perform calculations for aluminum in the warm dense matter regime. The dynamic structure factor obtained from the orbital-free calculations are compared with the dynamic structure factor obtained from pseudo-atom molecular dynamics calculations. These comparisons are made at 5, 20, and 50 eV for wavenumbers that span the single particle, generalized hy...

From the initial time dependence of the dynamic structure factor S{k,t), we obtain a general form, valid through second order in the concentration, for the mutual diffusion coefficient J) m' All effects of direct and hydrodynamic interactions (other than dynamic friction) are taken into account, including the three-point "Oseen" hydrodynamic tensor Tij" whose analytic form is obtained here for ...

Poly(N-isopropylacrylamide-co-acrylic acid) (PNIPAM-co-AA) ionomer chains can form stable nanoparticles in water at temperatures higher than their lower critical solution-temperature. A combination of the weight average molar mass (Mw) from the absolute average scattering intensity and the hydrodynamic radius distribution (f(Rh)) from the line width distribution G(Γ) was used to study the influ...

Integrating different steps on a chip for cell manipulations and sample preparation is of foremost importance to fully take advantage of microfluidic possibilities, and therefore make tests faster, cheaper and more accurate. We demonstrated particle manipulation in an integrated microfluidic device by applying hydrodynamic, electroosmotic (EO), electrophoretic (EP), and dielectrophoretic (DEP) ...