Im trying to find out if it would be possible to create a stencil from a metal plate by removing a thin strip of material all the way through. The groove would need dimensions of : 100nm wide and about 500 micrometres deep. The length doesn't really matter. Im trying to think of ways to grow nanowires using a metal stencil instead of growing onto a layer of resist and removing via liftoff. Iv heard that FIB can reach the resolution I need but not sure if it could reach the depths im looking for.
Any suggestions? Thankyou
Dear Jack
Yes, as you have mentioned FIB is a methods that can be used to creat nano an microchanle but for deep chanel you have to perform the process in several pass called multi pass. Laser machining is another available and chiper methode. I suggest that you study first laser machining method because it is more available.
Lasers are good option, especially femtosecond ones. Possible treatments - briefly here: https://www.irepa-laser.com/en/applications-en/surface-functionalization/surface-texturing
I second Dimitar's answer And add that you more than likely will need a femtosecond laser specifically. With longer pulse width, especially close to nanosecond, you might end up having melt zones near your machined edges. These melt edges may be in the form of microscopic bumps. I would try to avoid such artifacts for a nanostencil application.
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