Thus, {HEAD ~ more information} regarding the tip sample interaction can be retrieved from {TAIL ~ the torsional vibration spectrum} 
Thus , { HEAD ~ more information } regarding the tip sample interaction can be retrieved from { TAIL ~ the torsional vibration spectrum }
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL