{HEAD ~ The optical detector} 7 converts {TAIL ~ the amplitude} of the cantilever represented by the reflected light into an electrical signal 
converts
{ HEAD ~ The optical detector } 7 converts { TAIL ~ the amplitude } of the cantilever represented by the reflected light into an electrical signal
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH