Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site

World's #1 finishing resource since 1989
No login needed: Chime right in

topic 59506

D-I-Y atomically/molecularly smooth surfaces on aluminum (and maybe other metals). . .any tips?



January 16, 2014

Q. Some background:

I have been experimenting with D-I-Y microlithography (well, preparing to anyway). In order to do this, I need some sort of substrate. Silicon wafers are both too expensive and too fragile for my purposes. My thoughts are to use aluminum since it is (relatively) cheap. The problem is, however, the fact that the surface needs to be as smooth as possible. How would I go about doing this in a manner that is doable for an amateur such as myself? Chemical-mechanical polishing seems to be what is used for silicon wafers industrially, but this seems beyond the scope of something I could do, and besides I have been unable to find references for how to do it with Aluminum anyway. What about using regular means of polishing, and then electopolishing? What should I read to educate myself on the subject?

Thanks
-Kevin

Kevin Keith
home experimentalist - St. George, Utah, USA


February 28, 2014

A. Kevin,
While I don't know that it will provide you with the 'perfect' surface, I'd look into how home hobbyists grind telescope mirrors. They are regularly able to get irregularities and deformations down to under 10um (even less in some circumstances).
Many of their polishing techniques should be easily transferable, and you can do it to things like quartz and aluminum.

Hope I've helped a bit.

Marc Banks
Blacksmith - Lenoir, North Carolina USA

help wanted ad
Junior Quality Engineer [Santa Clara, CA]
Plating Process Engineer [Wenatchee, WA]
Plating Supervisor [Chicago]
Plating Quality Inspector [Chicago]

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact    -    Privacy Policy    -    ©1995-2021 finishing.com, Pine Beach, New Jersey, USA