The heat is transferred through the thin substrate to {TAIL ~ the liquid crystal layer} which results in a color change in {HEAD ~ the liquid crystal} 
The heat is transferred through the thin substrate to { TAIL ~ the liquid crystal layer } which results in a color change in { HEAD ~ the liquid crystal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD