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15 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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NANOTECHNOLOGY

Fred Myrtle

ITMG 100 09

Nanotechnology
-

Key Points


What is Nanotechnology?


Perspective


Originated


Types of Nanotechnology


Ethical Decisions


Conclusion

What is Nanotechnology?


Nanotechnology is the creating of machines that
operate on a molecular scale.

Imagaes

found at
http://www.crnano.org/whatis.htm


Getting Some Perspective


A nanometer is one
billionth of a meter.




A nanometer is the size
of about four atoms.

Getting Some Perspective (Tent).


A clearer understanding of what nanotechnology is:

http://science.howstuffworks.com/nanotechnology.htm#


The Beginning


The idea of nanotechnology actually began in
1959 when Richard Feynman gave a lecture called
"There's Plenty of Room at the Bottom"
acknowledging the fact that devices would become
smaller and more powerful over time.

The Beginning


Then in 1986, K. Eric
Drexler wrote "Engines
of Creation" and
introduced the term
nanotechnology.

Types of Nanotechnology


Four kinds of Nanotechnology


Carbon Nanotubes


Optical or Particle Wave Based
Nanotechnology


Crystalsand Nanotechnology


DNA Computing


Carbon Nanotubes


A carbon nanotube is a
nano
-
size cylinder of
carbon atoms. Imagine
a sheet of carbon
atoms, which would look
like a sheet of
hexagons

Carbon Nanotubes


The nanotube can also
be used to hold other
substances because of
carbon’s non
-
interactive
behavior.


Carbon Nanotubes




Some practical uses
for Carbon Nanotubes
are building designs
for cars and airplanes
and medical treatment

http://www.tekno.dk/uploadimages/articlespic_1219.jpg


Optical or Particle Wave Based Nanotechnology



Optical or particle
wave based
nanotechnology is
important because it
studies nanotechnology
and elements as both
particles and waves.

Optical or Particle Wave Based
Nanotechnology



Nanotechnology is
being used to see if it
is possible to transfer
electrons from one
computer to another
without any wires or
other connections.

Crystalsand Nanotechnology


Crystalsand
nanotechnology is the
research to make
crystalline structures on
the molecular level.

Crystalsand Nanotechnology


The structures are attached in a lattice structure
and as a result are incredibly strong. Also, it has
been shown that it can be used for bearings and
joints of machines making them run smoother and
last longer

DNA Computing


DNA computing allows
a person to
“understand, map,
manipulate, replicate
and alter strands of
DNA within molecules”
(Linstedt)

Types of Nanotechnology

Carbon Nanotubes

Optical or Particle
Wave Based
Nanotechnology

Crystalsand
Nanotechnology

DNA Computing

Advantages

Strong material that
provides superior
strength
over
steel
and can be a medical

Provides a wireless
power source and an
immediate global
communication device

Provides strong
material that can
length the life of
machine parts and
make them more
efficient

Alters DNA to cure
diseases and prevent
them too, also to gain
strength and
intelligence

Disadvantages

n/a

Takes a long time to
develop due to
super
-
conductivity

n/a

Can cause serious
damage to body and
is an ethical question
whether it playing
God.

Ethical Decisions


The most immediate challenge in nanotechnology is
that we need to learn more about materials and
their properties at the nano
-
scale

Ethical Decisions


Some doctors worry that the nano
-
particles are so
small, that they could easily cross the blood
-
brain
barrier, a membrane that protects the brain from
harmful chemicals in the bloodstream


(Bonsor).

Ethical Decisions


If nanotechnology in
medicine makes it
possible for us to
enhance ourselves
physically, is that ethical?

Ethical Decision


In theory, medical
nanotechnology could
make us smarter,
stronger and give us
other abilities ranging
from rapid healing to
night vision (Bonsor).

Conclusion


In Conclusion,
nanotechnology is
coming, whether we
like it or not. All of
these technologies can
greatly benefit
mankind but if abused
it could negatively
affect society

Works Citied

Bonsor, Kevin, and Jonathan Strickland. "How


Nanotechnology Works."
How Stuff Works
. 12Nov. 20


<http://science.howstuffworks.com/nanotechnology.htm>.



Linstedt, Dan E. "Nanotechnology is the next big thing."
Beye

Network
.
5 May 2005. 11 Nov. 2 <http://www.b
-
eye
-
network.com/view/836>.



"Nanotechnology Basics: For Students and Other Learners." Center for
ResponsibleNanotechnology
. 12 Nov. 2008
<http://www.crnano.org/basics.htm>.