smart and modern materials

Question 1

what is a smart material

Answer 1

a material that’s properties physically change in response to a stimulus

Question 2

what is modern material

Answer 2

a material that has been developed through the invention or a new process as a result of human development

Question 3

examples of smart materials

Answer 3

• shape memory alloys- changes shape in response to temperature- eg nitinol wire for braces
• photochromic- colour change with light intensity- eg welding goggles
• thermochromic- change colour according to temperature- eg room thermometers or baby spoons

Question 4

examples of modern materials

Answer 4

• quantum tunneling composites- insulating rubber containing tiny metal particles- eg touch screen
• aerogel- effective insulator as it is very porous