Various other photoinduced reactions may be used in {HEAD ~ the third technique} to bond {TAIL ~ the FLC molecules} to the alignment layer 
Various other photoinduced reactions may be used in { HEAD ~ the third technique } to bond { TAIL ~ the FLC molecules } to the alignment layer
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH