The method 2 further including the step of maintaining a negative bias with respect to the first electrode and a positive bias with {HEAD ~ respect} to {TAIL ~ the second electrode} 
to
The method 2 further including the step of maintaining a negative bias with respect to the first electrode and a positive bias with { HEAD ~ respect } to { TAIL ~ the second electrode }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL