Transmission Electron Microscopy (TEM) plays an unobtainable and important role in the fields of materials science, life science, chemistry, physics, metal materials, etc. It can obtain microscopic materials such as metals, minerals, semiconductors, polymers, ceramics, composite materials, and nano Microstructure, high-resolution crystal structure, microstructure, etc. are very important for studying the microstructure of materials and exploring the mechanism of materials. Through TEM morphology analysis, the following information can be obtained:

1. Obtain the microscopic morphology, porosity, sample particle size, etc. of nanomaterials, metal materials, and ceramic materials;

2. Obtain high-resolution data of materials, lattice fringes, and crystallographic parameters;

3. Obtain material diffraction pattern and judge material crystallographic parameters;

4. Obtain the material EDS signal, characterize the material element distribution, semi-quantitatively analyze the material element content, etc., and can perform surface scan, point scan, line scan, etc.;

5. With STEM mode, it can collect four kinds of images from different angles of electronic signals including bright field (BF), annular bright field (ABF), annular dark field (ADF) and large angle annular dark field (HAADF);

1. Sample Status

Both powder and liquid samples are acceptable. Films and blocks cannot be tested directly. Please explain and confirm in advance if ion thinning, double spray, FIB, and slice sample preparation are required.

2. Sample composition requirements

This instruction is only for material testing samples, biological samples are completely different from materials. Generally, the test samples have the following requirements:

Safety: non-toxic, non-radioactive;

Whether it contains organic objects: Organic objects is unstable under high pressure, and is easily broken up during the shooting process. When the sample is broken up, it will contaminate the instrument. If you need to shoot, please confirm with our staff. Samples with organic objects cannot be photographed for mapping, please do not select this option when making an appointment; Magnetic: Magnetic particles are easily adsorbed to the pole pieces. In principle, electron microscopes (SEM and TEM) do not capture magnetic samples. For magnetic sample, please confirm with our staff first.