Hair & Wire Module
A Substage for the SEM, to Inspect the Whole Circumference of Fine Wires.
Most SEM stages will tilt your specimen a certain amount, maybe zero to 90 degrees, but it is difficult to record the whole circumference of a very long wire without causing vibrations.
The sub-stage shown in the photo can be clamped in the cup of the specimen holder, the same way as other substages of this group. A small set of synchronous gears provides continuous rotation of a hair, a small filament, or a thin wire around the center line. One of the stage telescope drives can be used to drive the module. The whole module will turn together with the SEM stage rotation, for best orientation or illumination of the specimen.
The recording of stereo pairs is very easy. A small DC-Motor with a controller can be added, if the stage does not have manually driven "telescope rods" at the front plate.
The specimen is clamped in two clips, there is no torque at all applied to the wire or hair. After masking the mechanics and leaving the area of interest exposed, the whole module together with the object may be placed into the sputter coater to apply an electrically conductive coat.
Others upon request. Most of these substages fit several standard SEM specimen stages without modification.