Materials - Foams, Gels, Creams etc
Cryo-SEM: agarose Hydrogel
Cryo-SEM prepared specimen. The gel was rapidly frozen in slushy nitrogen, fractured at -140°C and sputter coated with 5 nm of platinium. Hydrogels have a very high water content, therefore cryo-SEM is the optimal method for observing their structure.
Cryo-SEM: Shaving foam
Fractured at -140ºC, sublimated at -90ºC for 3 minutes and coated with 5 nm of platinium.
Cryo-SEM: liquid paint
liquid painted cold fractured and coated with platinium. Left-hand picture is a secondary electron image (SE) and the right-hand a back scattered electron images (BSE)
Cryo-SEM prepared using the Quorum PP3010T. The detergent was rapidly frozen in slushy nitrogen, fractured at -140°C and sputter coated with 5 nm of platinium.
Gel toothpaste prepared by cryo-SEM. The specimen was plunge frozen in slushy nitrogen, fractured at -140ºC and sputter coated with Pt. Observed in secondary electron imaging (SEI) mode (left) and backscatter electron imaging (BEI) mode (right).