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O P E N F O R U M |
S M A L L W O N D E R |
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NANO-SCOPE
The nano-power!
Nanotechnology is used for a wide range of applications.
Medical
The size of nanomaterials is similar to that of most biological
molecules and structures. So they are ideal for developing faster,
flexible and more sensitive diagnostic devices, analytical tools,
contrast agents (contrast agents for cell imaging), drug-delivery
vehicles and developed tissue engineering (reproducing or repairing
damaged tissue).
Chemical
Chemical catalysis and filtration techniques are two prominent examples
where nanotechnology already plays a role. Waste-water treatment, air
purification and energy storage devices can also be vastly improved by
using nanoparticles.
Energy
Lights, fans, airconditioners, refrigerators--any electrical good that
we use at home or office or in school--can be produced more cheaply by
applying nanotech. These products are also far more energy efficient
than the run-of-the mill alternatives. For example, efficient lighting
like LEDs (Light-emitting diodes) or QCAs (Quantum Caged Atoms) reduce
energy consumption Most importantly, nanotech batteries can be
recycled!!
Consumer goods
Nanotechnology products have many other useful characteristics. They
range from being easy-to-clean to scratch-resistant. Modern textiles are
wrinkle-resistant and stain-repellent. It is used very widely in the
field of cosmetics as well.
It can be applied in the production, processing, safety and packaging of
food.
Its most useful application in household products is self-cleaning or
“easy-to-clean” surfaces on ceramics or glasses. Nanoceramic particles
have improved the smoothness and heat resistance of common household
equipment like the flat iron.
Nano-risks
Potential risks of nanotechnology health and environment are due to
certain aspects that make nanoparticles risky, mainly their mobility and
their increased reactivity.
Health
Nanoparticles within the body are highly mobile and in some instances
can even cross the blood-brain barrier. They can cause “overload” on
phagocytes, cells that ingest and destroy foreign matter, thereby
triggering stress reactions that lead to inflammation and weaken the
body’s defense against other pathogens.
Environment
Not enough data exists to know for sure if nanoparticles can have
undesirable effects on the environment. But studies of the health impact
of airborne particles for assessing potential health risks from free
nanoparticles have generally shown that the smaller the particles get,
the more toxic they become.
Risk regulations
Regulatory bodies in the US and in the European Union have concluded
that nanoparticles form the potential for an entirely new risk and that
it is necessary to carry out an extensive analysis of the risk. So far,
these products and materials that contain them are not subject to
regulations.
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