Probe v7¶

schematic
Dimensions¶

v7 sturdy membrane probe dimensions, in microns

total_height = 300
base_depth = 25
base_inner_diameter = 320.849
base_outer_diameter = 420.849
base_contact_area = 58252.8587
scaffold_base_inner_diameter = 320.849
scaffold_base_outer_diameter = 420.849
scaffold_angle_degrees_from_normal = 25
scaffold_z_min = 25
scaffold_z_max = 235
scaffold_height = 210
scaffold_centerline_radial_run = 97.9246082
scaffold_base_center_diameter = 370.849216
scaffold_top_center_diameter = 175
scaffold_tube_base_diameter = 50
scaffold_tube_top_diameter = 25
scaffold_top_inner_diameter = 150
scaffold_top_outer_diameter = 200
helix_start_count_per_direction = 8
helix_surface_angle_degrees_from_straight_cone_line = 30
helix_total_advance_degrees = 58.784012
scaffold_ring_count = 3
scaffold_ring_z_values = 25, 124.343, 198.867

top_ring_depth = 25
top_ring_inner_diameter = 150
top_ring_outer_diameter = 200
top_ring_z0 = 235
top_ring_z1 = 260
membrane_diameter = 200
membrane_thickness = 20
membrane_z0 = 260
membrane_z1 = 280
center_cylinder_diameter = 10
center_cylinder_depth = 20
center_cylinder_z0 = 280
center_cylinder_z1 = 300

assumptions
The total height is fixed at 300 microns.
The 25 degree scaffold angle is applied to the crossed-spiral centerlines.
The base ring OD/ID are derived from the scaffold base centerline and 50 micron base tube diameter.
The scaffold tube diameter tapers from 50 microns at the base to 25 microns at the top.
The thick top ring is 25 microns tall, matching the v5 cap-ring convention.
The membrane is a solid 200 micron OD, 10 micron thick cylinder on top of the ring.
The 10 micron center cylinder sits on top of the membrane.
STL files¶

Source: nanopositioning_probes/v7/