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This course provides a comprehensive overview on the methods used for the characterization of particles, particle systems and microstructures of heterogeneous materials, including nanoparticles, nanocrystalline and nanoporous materials. In the first part parameters for the description of the size, shape and arrangement of particles, grains and pores in microstructures are defined and the statistics of small particles, grains and pores is explained, including quantiles, mean values, moments and moment ratios. In the second part the different methods for the characterization of particles, grains and pores are treated in some detail, from sedimentation methods, laser diffraction, dynamic light scattering, image analysis, X-ray diffraction, adsorption methods and mercury porosimetry to less popular methods for the characterization of particles and microstructures. A special focus of this course is the evaluation of planar sections of the microstructure using stereological relations and the use of integral transformations for the correction of the random section problem. In two lectures also sintering and disperse systems are briefly treated, including suspensions and nanofluids and methods for characterizing their electrokinetic behavior. The course is suitable for students of all fields of chemistry and materials science and engineering. It can be particularly recommended for everyone interested in characterizing systems of small particles or microstructures of heterogeneous materials.
Last update: Pabst Willi (15.02.2018)
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Students will be able to:
correctly use all concepts related to the size and shape of particles, grains and pores,
correctly interpret size distributions of particles, grains and pores based on the statistics of small particles,
understand the relations between particles, disperse systems and granular microstructures,
use the correct terminology for the presentation of results and understand the theoretical fundamentals of common characterzation methods for particles and microstructures to the degree necessary to take full advantage of the current special literature in the field,
make qualified choices of suitable methods for the characterization of particles, disperse systems and the microstructure of heterogeneous materials, including porous materials, and correctly use these methods,
correctly apply stereological relations for the quantitative characterization of microstructures and integral transformations for correcting the random section problem when determining size distributions. Last update: Pabst Willi (22.02.2018)
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In order to become eligible for classification the student has to pass a written qualification test. The final exam is oral and concerns the content of the whole lecture course. Last update: Pabst Willi (14.02.2018)
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Recommended:
Last update: Unger Uhlířová Tereza (09.07.2024)
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1. Introduction – particle size and shape 2. Statistics of small particles 3. Sedimentation analysis 4. Adsorption methods 5. Mercury porosimetry 6. Particle packing and solid state sintering 7. Basic microstructure characterization 8. Image analysis and stereology I – Introduction to image processing and machine learning 9. Image analysis and stereology II – Metric and topological descriptors 10. Image analysis and stereology III – Size distributions 11. Scattering of light 12. Laser diffraction 13. Dynamic light scattering and other methods 14. X-ray diffraction and line broadening
Last update: Pabst Willi (19.10.2022)
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Pabst W., Gregorová E.: Characterization of particles and particle systems. VŠCHT Praha 2007 (accesssible via http://www.vscht.cz/sil/keramika/Characterization_of_particles/CPPS%20_English%20version_.pdf ).
Pabst W., Gregorová E., Uhlířová T.: Microstructure characterization via stereological relations — A shortcut for beginners (accessible via https://www.sciencedirect.com/science/article/pii/S1044580315001291/pdfft?md5=67921b46354613a1ca14786d6894f8fe&pid=1-s2.0-S1044580315001291-main.pdf ) Last update: Pabst Willi (22.02.2018)
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In order to enroll for this course the student must have a bachelor (B.Sc.) or comparable degree in chemistry, materials science and technology or a related field. Last update: Pabst Willi (15.02.2018)
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| Teaching methods | ||||
| Activity | Credits | Hours | ||
| Účast na přednáškách | 1.5 | 42 | ||
| Příprava na přednášky, semináře, laboratoře, exkurzi nebo praxi | 1.5 | 42 | ||
| Příprava na zkoušku a její absolvování | 2 | 56 | ||
| 5 / 5 | 140 / 140 | |||