Biomaterials: Biomaterials are synthetic or 1. materials used for medical devices or biological systems. They can be: •2. : resistance to long lasting activities, no or minimal tissue 3. , inert • ceramic: hard and 4. , inert or 5. • polymeric: flexible, elastic, and 6. resistant, inert or 7.
Nanomaterials: • external or internal dimension 100 8. or less • very versatile physicochemical characteristics • used for healthcare, electronics, cosmetics, textiles, information technology, and environmental 9. .
Smart materials: Smart materials react to external 10. . Some of them are: • piezoelectric: electric charge when 11. deformed •12. : change colour at variation in temperature, light, pressure • magnetorheological: change properties with 13. field
14.1 Say if the following characteristic belong to biomaterials, nanomaterials, or smart materials: they are also called reactive materials.
14.2 Say if the following characteristic belong to biomaterials, nanomaterials, or smart materials: it is a type of material that changes colour at variations in temperature, light, or pressure.
14.3 Say if the following characteristic belong to biomaterials, nanomaterials, or smart materials: they must be compatible with human tissues.
14.4 Say if the following characteristic belong to biomaterials, nanomaterials, or smart materials: they can be in the shape of particles, tubes, rods, or fibres.
14.5 Say if the following characteristic belong to biomaterials, nanomaterials, or smart materials: they can be inert or biodegradable if they are polymeric.
14.6 Say if the following characteristic belong to biomaterials, nanomaterials, or smart materials: when they are stimulated, they change their properties.
14.7 Say if the following characteristic belong to biomaterials, nanomaterials, or smart materials: solar cells use these materials because they are light absorbing.
14.8 Say if the following characteristic belong to biomaterials, nanomaterials, or smart materials: they are used in construction because they have properties that can prevent seismic vibrations.
15. Watch the video about smart materials and complete the table.
Smart material: Shape memory alloys Properties: Original shape after being 1. just by changing the 2. Applications: 3. , medicine
Smart material: Graphene Properties: Strenght, flexibility, and 4. Applications: 5. electronic devices, advanced water 6. systems
Smart material: Piezoelectric materials Properties: Convert 7. stress into 8. energy Applications: Agriculture, 9.
Smart material: Photochromic materials Properties: Change 10. based on light intensity Applications: Energy 11.