Smart Materials and Biotechnology

Question 1

Benefits of using smart materials

Answer 1

• can reduce the size of a product / reduce material cost
• can reduce complexity of a product
• can improve products compettiitveness
• extend the life of the product

Question 2

Genetically modified trees

Answer 2

• taller therefore longer sections available
• fewer natural faults i.e. knots
• increased resistance to rots and diseases
• quicker growing trees making it cheaper and more sustainable
• timber with greater flexibility
• timber with better compression properties
• a range of colours can be genetically engineered into timber

Question 3

advantages of smart glass

Answer 3

• provides shade from uv rays and glare
• glass can change opacity properties (electrical)
• provides privacy when opaque
• can be used as energy saving windows
• can reduce secondary greenhouse emissions
• can be used as an advertising gimmick
• eliminates the need for blinds
• allows control of natural light levels

Question 4

innovative examples of smart material use

Answer 4

• shape memory alloys e.g. braces, glasses frames
• reactive glass
• smart glass windows can be turned on and off
• solar panels covert sunlight to electricity
• memory foam mattresses