Observation of hydrogel samples on temperature control sample platform of FEN

1. No need for complex and tedious drying processes

The observation of hydrogel samples treated by freeze drying process is very dependent on the structure of the material itself and the drying process. If the process is not good, the gel structure will collapse due to drying, and many polymers will fall into powder due to lack of water support. The pore structure is distorted, which is lack of reference value for studying the real structure of gel. For the temperature controlled sample stage of the Feina electron microscope, the sample can be observed without drying, avoiding damage to the sample caused by improper drying processes.

The SEM image of the hydrogel sample treated by freeze drying method shows that the structure collapses and is distorted