thank you for answering Mr Rutz when I say pattern, on my point of vue, it's a crystal of calcite (CaCO3) which the volume is about 1 mm3. And the calcite is not very harsh (compared to metal) And my pattern is in a solution of Pb2+ and i have a surface precipation of PbCO3; So with the TEM I would like to go see at the interface, between the phase of PbCO3 and CaCO3. for seeing that i have to make a "cross over" but my problem is i have to polish my pattern but the risk is that i could remove the precipitate of PbCO3 at the surface I hope you will understood that i have writed I think i have manage to polish my pattern of calcite i have alredy test but now i have to see it under the TEM to see if that have done had worked thanks a lot for u'r answered sincerly
- posted
20 years ago
TEM preparation of such a sample is difficult, as you need a very thin
> sample (50 nm ot even thinner) to achieve electron transparency. >
> Best is to ask the specialists at the TEM lab which method they suggest, or
> if they can do the preparation for you. Maybe FIB milling is necessary too
> get a good sample.
>
> Mechanical polishing won't do it in this case.
>
> What do you exactly mean with pattern?
>
>
>
>
> "guillaume" schrieb im Newsbeitrag
> news: snipped-for-privacy@posting.google.com...
> > hello everybody
> > i have a little problem
> > i would like to use a TEM (Transmission electronic microscopy) on a
> > crystal of calcite but my pattern are too large.
> > i must polish them but i have never do that and i didn't find a good
> > method for do it.
> > my crystal of calcite are pure, it's optical calcite quality oriented
> > on the face {10-14}.
> > I would like to known if someone had already do this and which
> > technique he used.
> > thanks a lot for some one who's help me to resolve this problem or
> > give some tricks.