I need to take AFM with good roughness, can any one suggest me with good methods.
You can try compressing the powder in a solid pellet (like those for spectroscopy analysis). I attached a picture of the accessory I used. Then you need to remove the compressed pellet carefully to not break any face. A shiny face is flatter and best.
It worked for me!
https://www.piketech.com/images/P/Evacuable%20Pellet%20Press.png
Dear Fernando vallejos-Burgos,
I need to take AFM studies. Some time i may have week pellet by Moisture or soft material sense. For that above case can we go-head for tightening through Oven or furnace for 10minutes.
Thanks for your fruitful reply, If it wrong for AFM studies advice me.
Yes, I am talking about making a pellet for AFM, same as in the case of FTIR.
You should give it a try.
You have to make a dense SnO2 ceramic and sinter it carefully at an appropriate temperature to achieve the best value of the theoretically density. The surface of such ceramics can be rough, you have to polish. The higher the density you achieve, the better is smoothness in the surface you can achieve.
Alternately see if you get hold of a SnO2 single crystal. (may be quite costly)
Polish the ceramic, or the single crystal to a high level (use different diamond pastes)
and check polishing methods normally used for optical components.
Hopefully you can prepare a good polished surface.
(Kindly note: Making a sintered ceramic pellet is slight different from making a FTIR pellet)
K. Sreenivas
Dear Prof K. Sreenivas,
I can able to form pellet is easy but polishing facility is not possible in my institute. Can you advice me with alternate method.
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