Hi,
Another efficent method is to use Piranha ( H2O2+HESO4 1/1) put the
H2O2 before the acid in the beaker and mix for 1 min, then put your
wafer and wait for 2 mn and you will have very good results.
Alaa
Tony Price a écrit :
> Hi Li,
>
> I work with samples that have similar dimensions. I typically do a
> USB clean on my samples in acetone and methanol before I do any
> fabrication on them. Put acetone in a small beaker and submerge your
> samples in the acetone. Put water in the bath container and then
> place the small beaker of acetone in the water. (Make sure there
> isn't too much water or the beaker may float around and possible tip
> over.) Then I repeat the process with methanol. Do not pour the
> acetone and methanol directly into the bath container.
>
> Hope this helps.
>
> Tony
--
Alaa el dine ALLOUCH
Doctorant au LAAS-CNRS-Groupe N2IS
7 Av colonel Roche, 31077 Toulouse
Tél : 05 61 33 78 71