Nanohybrids Near-Field Optical Microscopy: From Image Shift to Biosensor Application

Figure 6

Profile lines of topographic and optical cross section of Figure 4(c), used for determining the rate resolution and optical/topographic shift. Marks D and E delimitate the edge resolution. Purple lines, cutting the distance axis at A and B delimitate the topographic profile line. Green lines delimitate the optical profile lines at and . The shift between the two graphs is made obvious by the different lengths of and . The two peak signals delimitated by C and are also shifted one with respect to the other. As explained in the text, the shift value can be easily calculated by taking into consideration the difference between and and verifying with .