gifted students - material science - the gifted child - giftedness enrichment workshop

MATERIAL SCIENCE !!!ENRICHMENT WORKSHOP FOR GIFTED

CHILDREN

NO LIMITS TO LEARNING!BELIEVE & YOU CAN ACHIEVE!

Dr Lakshmi Sharmawww.drlakshmisharma.com

What is Science?

Science 　 is ………. Biology Physics

Chemistry

What is Material Science?

Material Science

Material ScienceInvestigation of the relationship among processing, structure, properties and performance of materials.

History of Material ScienceStone Age

People began to make tools from stone Natural materials: stone, wood, clay, skins, etc.Bronze Age

Bronze is an alloy (a metal made up of more than on element), copper + < 25% tin other elements.Iron Age Use of iron and steel, a stronger and cheapermaterial

The Origin of Materials

Game 1 On the table are some items

How would you classify them, what similar properties do they have ????

You have 5 minutes !!!!

Classification of Materials Metals Ceramics: inorganic nonmetallic solid – clay, bricks, pipes Polymers Semiconductors:material with electrical conductivity Semiconductor materials are the foundation of modern electronics, including radio, computers, telephones, and many other devices.

Polymers The most important group of materials Long chain carbon backbone Plastics are a type of polymer Polymers occur naturally and can be synthesised (made)

Polymers

Monomer + reactant Polymer(usually toxic - carcinogen) (usually ok)

Game 2

In front of you are objects which do you think are polymers? You have 2 minutes to decide !

Can you eat polymers ?!!!!

Game 3

Imagine life without polymers !

Discuss what you would miss most !

Structure Structure is the fundamental issue

Decides on the performance of the Material.

DIAMOND OR GRAPHITE ?????

Game 4 You have spaghetti sticks in front of you can you construct the molecular structure on the sheet provided ?????

You have 5 minutes.

Polymers in NatureNature is amazing look at these polymers!!!!

Can you recognise them?

Polymer Research Spider webs as a source of polymer

Bacteria polymer for heart valves

Shells/molluscs for new materials - chitin

Current Material Development Biodegradable materials

Nanomaterials:one billionth of a metre, Human hair: ~10,000 nanometers in diameter, sunscreens coat your skin with a layer of nanoscopic titanium dioxide.

Nano-coatings on scratch-resistant car bumpers, corrosion resistant paints, andwound dressings.

Current Material Development

“Smart” materials:Self-healing materials ability to repair damage due to normal usage, thus expanding the material's lifetime : Shape memory materials maintain fixed shape even after distortion

New Materials Challenge !

Can you think of Future Materials?????

HOPE YOU ENJOYED THIS WORKSHOP ON MATERIAL SCIENCE !!!

NO LIMITS TO LEARNING!BELIEVE & YOU CAN ACHIEVE!

Dr Lakshmi Sharmawww.drlakshmisharma.com