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Nanotechnology. John Kelly Girls Technology College 16/11/2006. What is nanotechnology?. Nanotechnology is basically a materials science which has the following features:

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nanotechnology
Nanotechnology

John Kelly Girls Technology College

16/11/2006

what is nanotechnology
What is nanotechnology?

Nanotechnology is basically a materials science which has the following features:

  • Research and development at molecular or atomic levels, with lengths ranging between about 1 to 100 nanometres.
  • Creation and use of systems, devices, and structures which have special functions or properties because of their small size.
  • Ability to control or manipulate matter on a molecular or atomic scale.
advantages of nanotechnology
Advantages of nanotechnology

Most inventions help us live a good daily life. Nanotechnology is a good technological advance because of its positive benefits to pollution, cost, food and many more. Nanotechnology could help fix many problems that we come across in our everyday lives.

slide4

When thinking about nanotechnology it’s useful to contrast it with another ‘revolutionary technology’ bio technology. The ‘bio’ part of biotechnology refers to what the technology is dealing with.

Whereas with nanotechnology the ‘nano’ refers not to a thing but to the scale at which the technology takes place

slide6

The nano-scale

Its difficult to grasp quite how small the

nano-scale is. To give some reference

points one nanometre (nm) is one billionth

of a metre, or one millionth of a millimetre.

A human hair is 80,000nm thick, a red

blood cell is 5,000nm in diameter, a DNA

molecule is 2.5nm wide and 10 hydrogen

atoms arranged side by side measure 1nm.

slide7

What products are in

the market

in the U.K ?

slide8

Glass: 'Activ' self cleaning glass by Pilkington

Sunblock: see through sunblocks by Boots,

Body Shop, Green People and others

Wound dressings: Smith&Nephew 'Anticoat'

wound dressings

Fuel additives: Oxonica/Cerulean

International 'Envirox' fuel additive is in the

process of being provided to the entire

Stagecoach UK bus fleet

slide9

Cosmetics: L'Oreal 'Plenitude Revitalift'

anti-wrinkle cream

Printer paper: Kodak 'ColorLast' inkjet

printer paper

Clothing: Stain resistant and wrinkle

resistant fabric by Nanotex used in some

clothing lines by Levis, Regatta, Marks

and Spencer, Eddie Bauer, GAP, Lee, and

Kathmandu. Solefresh anti odour nanosilver

socks from JR Nanotech

Sports equipment: Carbon nanotube

reinforced tennis rackets from Babolat.

Tennis balls from Wilson

nanotechnology bad

Nanotechnology…bad?

Why do some people think it is bad?

Many nanoparticles show unique chemical, electrical, optical, and physical properties. The great diversity of nanoparticles types have made it difficult for scientists to make general statements about the potential safety hazards that nanoparticles might pose to living organisms.

There has been a study showing that inhaled nanosized particles gather in the nasal cavities, lungs and brains of rats. Scientists believe this build-up could lead to harmful inflammation and risk of brain damage or central nervous system disorders.

slide11

In late march 2006, six people went to hospital with serious respiratory problems after using a new German bathroom cleaning product called Magic Nano. The product was removed from sale after just three days.

Some manufacturerers are using high strength materials for tennis rackets and golf clubs and stain resistant fabrics. These products contain nanoparticles of zinc oxide. But they all have one thing in common-their Nano components have not gone through safety tests.

slide12

L'Oreal RevitaLift Eye

The benefits in this product is supported by the nanotechnology so it helps the skin and gives vitamin D

slide13

L'Oreal Dermo-Expertise

RevitaLift Eye Anti-Wrinkle

The Bottom LineMs. McCann tried this, and found the skin around her eyes felt soft and looked shiny at first but no lasting effects. She did not find it comfortable.

what are nanotechnology socks
What are nanotechnology socks

Nanotechnology socks contain nanoparticles of silver. These particles help kill the bacteria that makes our feet smell. Many people with smelly feet will benefit from this technology.

what we will be doing
What We Will Be Doing.
  • A student will be wearing socks made from nanotechnology for about 10 days. The student will observe how many days the socks take to get smelly. This student will record the socks progress day to day.

This will start from 4th November – 14th November.

tested on teacher
Tested on Teacher!
  • Our teacher, Mrs. McCann also tried the Nanosocks.
  • She found that they did not smell at all after wearing them for four days and thought her heels felt softer.