The preparation of SEM nano powder samples usually requires the following steps:
Sample preparation
Firstly, it is necessary to choose an appropriate sample preparation method. Usually there are physical methods, chemical methods, biological methods, mechanical methods, etc. Among them, the most common methods are magnetron sputtering, chemical reduction, aerosol, etc.
Sample dispersion
It is also very important to disperse the nano powder samples evenly. Samples can be uniformly dispersed in solvents or other substances using methods such as ultrasound or stirring.
Sample preparation
According to actual needs, samples can be prepared into thin films, thin films, or other forms. Samples can usually be prepared using equipment such as centrifuges.
Grain size testing
Grain size can be tested using methods such as transmission electron microscopy or X-ray diffraction, and corresponding processing and adjustments can be made based on the test results.
SEM observation
Place the sample on the SEM specimen table for SEM observation. Better SEM images can be obtained by adjusting SEM parameters such as electron acceleration voltage, electron detector, scanning method, etc.
