{HEAD ~ The physical thickness} of the rough VO2 layer may be increased to get {TAIL ~ the same emittance performance} as the one of a device using an optimal physical thickness of a smooth VO2 layer 
increased to get
{ HEAD ~ The physical thickness } of the rough VO2 layer may be increased to get { TAIL ~ the same emittance performance } as the one of a device using an optimal physical thickness of a smooth VO2 layer
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH