FIB cleaned and reshaped Electrostatic electron vortex beam generators - dataset2

Here is a second set of SEM images of Electrostatic electron vortex beam generators fabricated at the CNR-IMM in Bologna and FIB cleaned and reshaped at the CNR-NANO in Modena. The difference between this batch of devices and the first one is in the thickness of the electrode (the z-dimension), this batch has a electrode thickness of 30um, while the first batch is 10um thick.