Nano-Science

Buckmisterfullerene

What is a nanoparticl

e?

One million nanoparticles placed side by side would span 1mm.

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Macro…..

Billion light years

93

The universe

telescope

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thousand light years

100

The milky way

(our galaxy)

telescope

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thousand km

13

The Earth

(our Planet)

telescope

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km

320

Wales

telescope

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metre

150

Millennium Stadium

telescope

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metre

2

Person

Eye

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cm20

Science textbook

Eye

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cm2

Your finger

Eye

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mm1

Pencil point

Eye

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Micro…..

micrometer

300

Flea

microscope

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micrometer

40

Human hair

microscope

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Micro…..

micrometer

20

One blood cell

microscope

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micrometer

4

One Bacterium E-coli

microscope

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nanometre

400

One Flu Virus (Influenza)

Electron microscope

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nanometre

40

Molecule of protein

Electron microscope

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Nano…..

nanometre

1

Molecule of Buckmisterfuller

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Electron microscope

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What is nanoscience?What is nanoscience?

A nanometer (nm) is 1,000,000,000 (1 billion) times smaller than a meter.

Nano-science is the study of particles that have the size of 1 to100nm.

Your finger nails grew a nm while reading this!

A nanometer (nm) is 1,000,000,000 (1 billion) times smaller than a meter.

Nano-science is the study of particles that have the size of 1 to100nm.

Your finger nails grew a nm while reading this!

Imagine a nanoparticle was the size of a football.

Imagine a nanoparticle was the size of a football.

A chicken would be the size of earth

A flea would be the size of Derby.

A virus would be the same size as a human!

A chicken would be the size of earth

A flea would be the size of Derby.

A virus would be the same size as a human!

Why are we interested in nano-science?

Why are we interested in nano-science?

• Nanosized particles can produce NEW properties in materials

• These properties are different to their behaviour in large scale – eg silver

• Nanoparticles are so tiny that they have a huge surface area for a small volume.

• Nanosized particles can produce NEW properties in materials

• These properties are different to their behaviour in large scale – eg silver

• Nanoparticles are so tiny that they have a huge surface area for a small volume.

Is nano-science about in our lives today? – YES!!

Is nano-science about in our lives today? – YES!!

• Lots and lots of things that you have used this morning have used nanoscience – straightners, toothpaste, phones, makeup…….

• Silver is very widely used - nano sized silver particles have antibacterial, antiviral and antifungal properties.

• Where could these be used?

• Lots and lots of things that you have used this morning have used nanoscience – straightners, toothpaste, phones, makeup…….

• Silver is very widely used - nano sized silver particles have antibacterial, antiviral and antifungal properties.

• Where could these be used?

Antifungal/antibacterial PropertiesAntifungal/antibacterial Properties

Some socks have been developed with the silver in to help people who suffer from athletes foot.

Some socks have been developed with the silver in to help people who suffer from athletes foot.

Nano-sized titanium dioxide absorbs and reflects UV light while being transparent to visible light.

Nano-sized titanium dioxide absorbs and reflects UV light while being transparent to visible light.

Why is this useful? Where could be use this?Why is this useful? Where could be use this?

http://www.bbc.co.uk/learningzone/clips/nanotechnology-used-in-sunscreen-manufacture/6004.html

BuckmisterfullereneBuckmisterfullerene

Fullerenes are carbon incredibly small carbon based molecules. They can be used for strengthening materials (for example sports equipment) and are sometimes used as a way of delivering drugs into the body.What type of bonding is this likely to contain?

Fullerenes are carbon incredibly small carbon based molecules. They can be used for strengthening materials (for example sports equipment) and are sometimes used as a way of delivering drugs into the body.What type of bonding is this likely to contain?

Advantages and disadvantages of using Advantages and disadvantages of using nanoparticlesnanoparticles

Nanoparticles

AdvantagesAdvantages DisadvantagesDisadvantages

Preparation of certain catalysts

Unusual propertie

s,

leading to new uses

Some have antibacterial,

antiviral and antifungal properties

Could penetrate skin and cause undesired

side-effects

Easily releasedinto the environment

There is a lot that we don’t know about nanoparticles at the moment. Much more research is needed before their use becomes widespread

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Nanotechnology Questions1.What is nanotechnology?2.Describe two uses of

nanotechnology.3.What is buckmister

fullerene? How is it useful?

4.What are the concerns about the use of nanotechnology?