As our technology downsizes,scientists often operate in microscopic-scale jungles, where modern-day explorers develop novel methods for transporting microscopic objects of different sizes across non uniform environments, and without losing them. Now,Pietro Tierno and Arthur Straube from the University of Barcelona, Spain, or beget developed a novel method for selectively controlling,via a change in magnetic field, the aggregation or disaggregation of magnetically interacting particles of two distinct sizes in suspension in a liquid. Previous studies only focused on one particle size.
Source: phys.org