Smart Materials and Their Applications
- Petr Sedlák (guarantor), Zdeněk Potůček (guarantor)
- Department of Solid State Engineering
Smart or responsive materials have one or more properties that can be dramatically and reversibly altered by changes in some external conditions. Each individual type of smart materials has a various property, which can be significantly modified, such as shape, conductivity or color. The property responding to external stimuli (heat, stress, electric field, light) influences what types of applications the smart material can be used for. The number of their applications is growing steadily. Passive and active vibration damping, airbag sensors, acoustic transducers, precision positioners, miniature ultrasonic motors, vascular stents, eyeglass frames, cellular phone antennas, light sensitive glasses or photochromic and thermochromic clothes could serve as a few examples. Lectures are focused on physical properties, experimental methods of investigation and possible application of color changing materials, light emitting materials, piezoelectric materials, conducting polymers, dielectric elastomers, ferroelectric materials and shape-memory materials. Attention is also paid to the effect of phase transitions on physical properties of smart materials and to their numerical simulations.
Basic knowledge of structure of solid states, solid state theory, physics of dielectrics and optical properties of solids.
- Syllabus of lectures:
1. Thermal, electrical, mechanical, and optical properties of solids, symmetry of crystals, tensor description of physical properties. 2. Influence of the 1st and 2nd order phase transformations on physical properties of solids. 3. Color changing materials - photochromic, thermochromic, and electrochromic effect. 4. Light emitting materials - fluorescence, phosphorescence, electroluminescent displays. 5. Piezoelectric materials for transducers, sensing elements, and actuator/sensor systems such as precision positioners, miniature ultrasonic motors, and adaptive mechanical dampers. 6. Conducting polymers and dielectric elastomers for artificial muscles. 7. Ferroelectric materials, ferroelectric and optical memories. 8. Shape-memory alloys, classes of the martensitic transformations, martensite microstructures, shape-memory, pseudo-elastic, and pseudo-plastic effect. 9. Important shape memory materials - Ni-Ti, CuZnAl, CuAlNi alloys. 10. Numerical simulation of shape-memory alloys behavior. 11. Methods of observation of martensitic phase transformations. 12. Applications of shape-memory alloys - passive and active vibration damping systems, adaptive composite systems, biomedical applications, surgical tools, astronautic and aeronautic applications, artificial muscle wires, thermostats.
- Syllabus of tutorials:
- Study Objective:
Knowledge: ^^Overview of smart materials and their applications, understanding of physics of smart material properties, relationships between physical properties and structure of smart materials and methods of modification of smart material properties. ^^Skills: ^^Optimization or development of novel smart materials based on appropriate theoretical models with the aim to obtain materials with physical properties required for individual aplications.
- Study materials:
Key references:^^. Encyclopedia of Smart Materials, Ed.: M. Schwartz, John Wiley and Sons, New York, 2002. ^^. Shape Memory Materials, Eds.: K. Otsuka, C. M. Wayman, Cambridge University Press, Cambridge, 1998. ^^Recommended references: ^^. Zhong-lin Wang, Z. C. Kang: Functional and Smart Materials: Structural Evolution and Structure Analysis, Plenum Press, New York, 1998. ^^. Jasprit Singh: Smart Electronic Materials: Fundamentals and Applications, Cambridge University Press, Cambridge, 2005.
- Time-table for winter semester 2019/2020:
- Time-table is not available yet
- Time-table for summer semester 2019/2020:
- Time-table is not available yet
- The course is a part of the following study plans: