Tip Model
Generate a synthetic AFM tip model DATA_FIELD. The input field sets the pixel size for the tip. The apex (centre pixel) is the maximum value; edges are shifted to zero. Equivalent to gwy_tip_model_preset_create (tip.c / tip_model.c).
Inputs
| Name |
Type |
Required |
Description |
| field |
DATA_FIELD |
Yes |
Reference field that sets the tip pixel size |
Outputs
| Name |
Type |
Description |
| tip |
DATA_FIELD |
Synthetic tip shape field |
Controls
| Name |
Type |
Default |
Description |
| shape |
dropdown |
parabola |
Tip geometry: parabola (paraboloid with apex radius R), cone (sphere-capped cone), or sphere (ball-on-stick) |
| radius |
FLOAT |
10 nm |
Apex radius of curvature in metres (1e-10 to 1e-6) |
| half_angle |
FLOAT |
20.0 |
Half-cone angle from the tip axis in degrees for the cone shape (1–89°) |
| n_pixels |
INT |
65 |
Side length of the square tip grid in pixels (odd values only, 3–511) |
Notes
- half_angle is only used for the cone shape.
- The tip grid must be smaller than or equal to the image size for Tip Deconvolution to work correctly.
- Large n_pixels values produce large tip grids that make deconvolution slow.
