{HEAD ~ The positively charged mobile ions} drift away from {TAIL ~ the positively biased film interface} and toward the negatively biased film interface, causing capacitance voltage shifts 
drift away from
{ HEAD ~ The positively charged mobile ions } drift away from { TAIL ~ the positively biased film interface } and toward the negatively biased film interface , causing capacitance voltage shifts
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH