I need to perform cross-sectional SEM imaging on aerogel samples to study their microstructure. Since the aerogels are quite soft and flexible I want to know how can I make a cut without tampering with the surface.
I think it will mainly depend on the system you investigate.
I found cryofracture mentioned:
Article Vapor and pressure sensors based on cellulose nanofibers and...
A recent book chapter is:
Chapter Structural Characterization of Aerogels
Cutting the aerogel sample, even while frozen, may still cause some surface tampering. To minimize this, you can use a microtome with a sharp diamond knife to make a precise and clean cut. Additionally, using a gentle touch and ensuring the sample is properly supported during the cutting process can help reduce surface damage.
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