A High Rigidity and Precision Scanning Tunneling Microscope with Decoupled and Scans

Table 2

Radial and axial resonant frequencies as a function of scan shaft radius. The first row is the scanning head without a tip holder.

Radius (mm)	Radial frequency (Hz)	Axial frequency (Hz)
0	35995	108461
0.5	35361	126304
0.575	35122	128861
0.65	35022	131385
0.725	35072	133869
0.8	35284	136363
0.875	35661	138895
0.95	36205	141492
1.025	36893	144085
1.1	37738	146777
1.175	38709	149441
1.25	39791	152094