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Polishing aluminum deposited on glass to 0.2 nm

Q. I am depositing aluminium on glass substrate (Bluestar microscopic slides). Now I want to polish the aluminium substrate up to the surface roughness .3nm. What polishing material should I use and of what grit? Or is it not possible to achieve it?

ASHAMONI NEOG
Ph.D. Scholar - India
November 10, 2019

A. Hi ASHAMONI. While anything is possible, my limited understanding is that there is no technology for achieving such polishing. My quick googling and a few miniutes of reading seems to indicate that even specialized techniques have only achieved 0.7 nm on aluminum.

Regards,

Ted Mooney, P.E. RET
Striving to live Aloha
(Ted is available for instant or longterm help)
finishing.com - Pine Beach, New Jersey
November 2019

Nadcap Chemical Processing Auditor - PRI, traveling
Process Engineer / Chemist - Denver Metal Finishing, Colorado

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