The technique took some tweaking. Initially, the electric field generated by the beating heart muscle cells was too small to make a noticeable difference to the reflectance of the graphene.

This stuff is in 3-D. If you right click with the mouse you can rotate things around. There are two types of 3-D objects used in this code. There is the sphere and the arrow.

This opens up possibilities of real-time and local control of domain wall motion by electric fields at ... of position at B=23 mT, obtained ... driving field. The lines in all graphs are fits with ...