Spruce sawdust (lignocellulose material) was magnetically modified after contact with a water-based magnetic fluid containing maghemite nanoparticles. This procedure allows one to use the prepared material as a new magnetic affinity adsorbent in magnetic separation techniques. The magnetic sawdust was investigated by means of electron spin resonance spectroscopy and conventional magnetic method...

Manipulation of small-scale matter is a fundamental topic in micro and nanorobotics. Numerous magnetic robotic systems have been developed for the manipulation microparticles an ambient environment, liquid, as well on air-liquid interface. These move intrinsically or magnetically tagged objects by inducing torque force. However, most materials found nature are nonmagnetic. Here, we report ferro...

We investigate how ferrofluid droplets suspended in a wall-bounded shear flow can organise when subjected to an external magnetic field. By tuning the magnitude of field, we find that form chain-like structures direction field is weak, while forming crystal-like pattern strong provide phase diagram and critical conditions for this chain-to-crystal transition, by applying both numerical simulati...