Transmission Electron Microscopy (TEM)

Question 1

What are the basic principles of TEM?

Answer 1

TEM is a microscopy technique in which a beam of electrons is transmitted through an ultra-thin specimen, interacting with the specimen as it passes through the sample.

Question 2

What is an application of TEM?

Answer 2

TEM images of Mg(OH)2 nanoparticle powders from dispersion in propan-2-ol.
- plate like particles
- mean diameter: 48 -181 nm
- thickness: 10 nm

Question 3

What is XRD used for?

Answer 3

To determine whether nanoparticles are crystalline or amorphous.

Question 4

What components are included in the characterization of nanoparticles?

Answer 4

1. morphology (shape, size)
2. dispersity (mono-, bi-)
3. chemical composition and purity
4. crystallinity
5. stability

Question 5

What methods are Electron microscopy?

Answer 5

1. SEM-EDX
2. TEM
3. Dynamic Light Scattering (DLS)
4. X-Ray Diffraction (XRD)
5. ATR-FTIR
   [6.AFM]