<p>Doing some FIB pattern testing. Looks like we are dragging the beam between frames right now. Hmmmmmmmm.</p><p>The dark area around each test pattern is the result of taking an image with the FIB. Remember kids, a FIB is a milling machine that is always ablating the sample when the beam is on, and it only just so happens to be able to take pictures while doing so.</p>