The TGT-1500 test grating is intended for SPM calibration in X- or Y-axis, determination of lateral and vertical scanner nonlinearity, detection of angular distortion and tip characterization. Nominal values for height and pitch are given below. Actual values come with the test grating.
Structure: | Si wafer with grating in top surface |
Pattern type: | 1-D array of triangular steps with precise linear and angular dimensions |
Edge angle: | approximately 70 degrees |
Edge Radius: | ≤10nm |
Pattern Height: | 1.8µm - non-calibrated, for information only |
Pitch: | 3 ±0.01µm |
Chip size: | 5 x 5 x 0.5mm |
Effective area: | Central square of 3 x 3mm |
Note: Values for step heights are nominal; actual step height is given with the product and could be ±5%