[3dem] Re: 3dem Digest, Vol 28, Issue 3

[Roseann Csencsits]

Alex
You did not really state the problem.  What are you seeing and not  
seeing?  Is the sample metal or carbon coated?  Is it charging?
If uncoated and charging, try 2kV or 1kV.  Can you get very low mag  
images or none at all?

Roseann






On Dec 6, 2009, at 12:00 PM, 3dem-request at ncmir.ucsd.edu wrote:

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>   1. Problem with the SEM imaging (Alex Abezgauz)
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> Message: 1
> Date: Sun, 6 Dec 2009 17:14:17 +0200
> From: Alex Abezgauz <ama7654 at gmail.com>
> Subject: [3dem] Problem with the SEM imaging
> To: 3dem at ncmir.ucsd.edu
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> Lately, we have tried to obtaine SEM images of porous SiO2 in our
> laboratory. It  was formed after special treatment with acid for pores
> formation. The diameter ranges from 40 to 60nm and the thickness of  
> 6-8µm,
> but we did not succeed. The SEM microscope used is Quanta 200. The  
> different
> conditions were from 20 to 5kV and spot size from 5-to 1.5.
>
> If you are familiar with this problem we will appreciate your help.  
> Thanks.
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> End of 3dem Digest, Vol 28, Issue 3
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