I am not sure how stable this setup was. Also, that technology can not be scaled up. I have seen electron microscopy setups 10 years where you could cut indivi

I am not sure how stable this setup was. Also, that technology can not be scaled up. I have seen electron microscopy setups 10 years where you could cut individual lines on a microchip with ion-beam milling and "draw" another one with 7nm with via Gallium deposition (if I remember right). All that is impressive technology with specific applications but not good for scale up.