Image:5-14-10 force pdiff.png

The percent difference of the force applied to a single ferritin protein as a function of length, measured in inches. There are two cases, a neodymium magnetic yoke, and an iron core electromagnet. Here a positive value indicates that neodymium exerts a stronger force and a negative percentage indicates that the iron electromagnet exerts the stronger force. The vertical red lines indicates the position of a flow cell, and the vertical black line indicates the beginning of the liquid in a micro-centrifuge tube.