The device further includes, out of the detection zone, additional thin localized elements of {HEAD ~ high magnetic permeability material} having {TAIL ~ a thickness} much lower than that of the patterns, obtainable by photolithography and located at the same level as the thin detection elements 
The device further includes , out of the detection zone , additional thin localized elements of { HEAD ~ high magnetic permeability material } having { TAIL ~ a thickness } much lower than that of the patterns , obtainable by photolithography and located at the same level as the thin detection elements
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD 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 OTH OTH OTH OTH OTH OTH OTH