providing {HEAD ~ a plurality} of {TAIL ~ sensor areas} on which the nanoparticles to be verified accumulate when said nanoparticles are present, and 
of
providing { HEAD ~ a plurality } of { TAIL ~ sensor areas } on which the nanoparticles to be verified accumulate when said nanoparticles are present , and
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH