The contact sensors of the invention include {HEAD ~ a conductive composite material} formed of a polymer and {TAIL ~ a conductive filler} 
The contact sensors of the invention include { HEAD ~ a conductive composite material } formed of a polymer and { TAIL ~ a conductive filler }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL