How can I best reduce the CNT charging in a bulk epoxy sample of nanoclay?

05 May 2014 1 5K Report

I am planning to use TEM to image the dispersion of nanoclays and CNT's in the bulk epoxy sample and I am assuming that I will have to deal with enormous charging at ~ 200KV. What would be the best technique to reduce charging in the CNT's (say 1-5%) dispersed in bulk Epoxy sample?

Your input and suggestions are much appreciated. Thanks!

Note: I tried using SEM (~30KV) with around 20nm 'Au' sputtered on top to downplay the charging, but still I see the boil on the sample surface.

Rajdeep Kaur

I do not think that there will be any charging once the sample are in epoxy or spurr resin. Once the sample is embedded and ultrathin sectioning is done there is no charging.

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