I have built the TEM sample from the powder by the help of TEM grid of cu. But I have to build the sample on solid state. The real problem, during the formation of sample is "the sample broke down" . What are the safety measures or any suggestion.
You can uniformly disperse your powders (very small amount) into a liquid. Then, put a drop of the slurry on top of your brittle solid. After dring, you can observe in TEM.
Respected Yanchun Zhou sir,
I have already done this process. The problem related in this method is the droplet of ultra-sonicated solution on the Cu grid may analyze up to resolution of 100 nm range after that images become blur. So I want to make some solid sample of the specific material. For Any suggestion I will be very grateful.
Respected Mouad Ahmad Tarawneh sir,
The material is Nuclear grade graphite.
Hello Awani,
Completely naive suggestion since I work on biological samples, but if your problem is sample disagregation, could you try embed your powder in resin ? Then produce ultra thin slices and bring them under TEM...
Regards,
William
Thanks William,
For your kind and useful suggestion.
My material is graphite. I see many of the papers the resolution up 0.1 nm range. And inter planer distance is clearly visible. But the particles on TEM grit are not clearly visible up to such magnification. Our machine has capability of doing HRTEM but the problem is the preparation of sample of such kind.
Dear Awani Bhushan:
As suggested by William Nicolas. You can mix your powders with either polymers or with soft metals to make composites containing your powders. The cut the composites into thin slids using diamound blades as for prepaering most of biosamples. There are lot of papers on the preparation and TEM observations of SiC whiskers using this method published in early 1990s. One of the authors is Xiaoguang Ning. You can check the papers and find the solution.
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