- Level Professional
- Duration 46 hours
- Course by École Polytechnique Fédérale de Lausanne
-
Offered by
About
Learn about the fundamentals of transmission electron microscopy in materials sciences: you will be able to understand papers where TEM has been used and have the necessary theoretical basis for taking a practical training on the TEM. This course provides a comprehensive introduction to transmission electron microscopy (TEM) in the field of materials science. For an instrument operated by a single user, modern TEM provides an analytical platform with unsurpassed versatility, giving access to structural and chemical information from the micrometer to the sub-angstrom scale. In a thin, electron-transparent sample one can measure the crystallinity, grain structure, size, and defects, and the chemical composition. The crystal lattice can be imaged with atomic resolution, allowing observation of grain boundaries and interfaces. It is the only direct structural analysis method for studying nanoparticles. With this course you will gain a deep understanding of modern TEM and the connection between: - the optics and operation of the instrument; - the physics of electron-matter interactions; - insights into the materials properties of the sample. This gives the background to: - identify TEM techniques suitable to solving specific scientific problems; - interpret TEM data presented in articles; appreciate the impact of technological advances that have, for instance, led to sub-angstrom resolution by aberration correction. It can also be the basis for subsequent practical training on this remarkable instrument, and a stepping stone towards learning very advanced techniques with magical names like "dark field holography" or "angular resolved electron energy-loss spectroscopy". Recommended background: Basics of crystallography and diffraction, college optics (construction of ray diagrams) are absolutely mandatory prerequisites; Fourier optics, more advanced crystallography and solid state physics are of great advantage.
Modules
Welcome
1
Videos
- Welcome from the teacher
5
Readings
- Welcome
- Discussion forums
- Grading policy and certificate
- External resources
- Where to get help
Lesson 1.1: History, constituents of TEM
2
Assignment
- Awareness Quiz 1.1
- Control Quiz 1.1
2
Videos
- Introduction: the instrument - I. History and building blocks
- Reminders! Ray Diagrams.
4
Readings
- Week 1 introduction
- Section 1.1
- Exercises for lesson 1.1
- Further resources
Lesson 1.2: Lens aberrations
2
Assignment
- Awareness Quiz
- Control Quiz 1.2
1
Peer Review
- Assignment Week 1
1
Videos
- Lens aberrations
2
Readings
- Section 1.2
- Exercises for lesson 1.2
Lesson 2.1: Block of lenses
2
Assignment
- Awareness Quiz 2.1
- Control Quiz 2.1
2
Videos
- The instrument - II: description of the 3 main blocks
- Quiz-video: 3-lens condenser system
3
Readings
- Week 2 introduction
- Section 2.1
- Exercises for lesson 2.1
Lesson 2.2: The TEM put together
2
Assignment
- Awareness Quiz 2.2
- Control Quiz 2.2
1
Peer Review
- Assignment Week 2
2
Videos
- Bragg's Law
- TEM in operation
2
Readings
- Section 2.2
- Exercises for lesson 2.2
Lesson 3.1: 2-beam electron diffraction
2
Assignment
- Awareness Quiz 3.1
- Control Quiz 3.1
1
Videos
- 3.1: 2-beam electron diffraction
4
Readings
- Week 3 introduction
- Section 3.1
- Note on Miller indices (h k l)
- Exercises for Lesson 3.1
Lesson 3.2: Reciprocal lattice
2
Assignment
- Awareness Quiz 3.2
- Control Quiz 3.2
1
Videos
- Reciprocal lattice
2
Readings
- Section 3.2
- Exercises for Lesson 3.2
Lesson 3.3: the Ewald sphere
2
Assignment
- Awareness Quiz 3.3
- Control Quiz 3.3
1
Peer Review
- Assignment Week 3
1
Videos
- Ewald sphere construction
2
Readings
- Section 3.3
- Exercises for Lesson 3.3
Lesson 4.1: Multiple beam diffraction
2
Assignment
- Awareness Quiz 4.1
- Control quiz 4.1
1
Videos
- Multiple beam scattering
3
Readings
- Week 4 introduction
- Section 4.1
- Exercises for Lesson 4.1
Lesson 4.2: Shape effects in reciprocal lattice
2
Assignment
- Awareness Quiz 4.2
- Control Quiz 4.2
1
Videos
- Shape effects on reciprocal lattice
2
Readings
- Section 4.2
- Exercises for Lesson 4.2
Lesson 4.3: Deviation from Bragg scattering
1
Assignment
- Control Quiz 4.3
1
Peer Review
- Assignment Week 4
1
Videos
- Deviation from Bragg scattering
3
Readings
- Section 4.3
- References
- Exercises for lesson 4.3
Dynamical scattering
1
Assignment
- Control Quiz 5.1
2
Videos
- Dynamical scattering
- Addendum: Notations for dynamical scattering
3
Readings
- Week 5 introduction
- Section 5.1
- Exercises for Lesson 5.1
Thickness fringes
1
Assignment
- Control Quiz 5.2
1
Peer Review
- Assignment Week 5
1
Videos
- Thickness fringes
2
Readings
- Section 5.2
- Exercises for Lesson 5.2
Bend contours
1
Assignment
- Control Quiz 6.1
1
Videos
- Bend contours
3
Readings
- Week 6 introduction
- Section 6.1
- Exercises for Lesson 6.1
Double diffraction
1
Assignment
- Control Quiz 6.2
1
Peer Review
- Assignment Week 6
1
Videos
- Double diffraction
2
Readings
- Section 6.2
- Exercises for Lesson 6.2
Contrast transfer function
2
Assignment
- Awareness quiz.
- Control Quiz 7.1
2
Videos
- Introduction
- Contrast Transfer Function
3
Readings
- Week 7 introduction
- Section 7.1
- Exercises for week 7.1
Weak phase object approximation
1
Assignment
- Control Quiz 7.2
1
Peer Review
- Assignment Week 7
1
Videos
- Weak phase object approximation
2
Readings
- section 7.2
- Exercises for week 7.2
Phase contrast transfer function
2
Assignment
- Awareness Quiz
- Control Quiz 8.1
1
Labs
- Python notebook for the PCTF
1
Videos
- Phase Contrast Transfer Function
4
Readings
- Week 8 introduction
- Section 8.1
- Installation of JEMS student edition
- Exercises for week 8
HRTEM
1
Assignment
- Control Quiz 8.2
1
Peer Review
- Assignment Week 8
2
Videos
- HRTEM
- Conclusion
2
Readings
- Section 8.2
- Exercises

Cécile Hébert

Duncan Alexander