FEATURE ARTICLE Figure 1 Single cell aligner technology The ferrofluid adopts a funnel like shape when subjected to the proper magnetic field (fixed magnet). This allows the formation of a liquid funnel into which another immiscible liquid can be flowed. The liquid walls are extremely soft thus damping cell collision and aligning cells, down to the single cell level, in a very soft low-shear manner. An electromagnet can be added to the device to control the flow without harming the cells since it is also liquid. Such a valve is un-cloggable unlike solid ones. Figure 2 Qpump ferrofluidic anti-tube system Figure 3 K series ferrofluid www.MagneticsMag.com May/June 2022 * Magnetics Business & Technology 17http://www.mpi.it http://www.mpimagnets.com http://www.MagneticsMag.com