A simple PowerPoint presentation explaining about nanotechnology

1. Presentation by
M. Dhathvashree and A.T. Swaruparani
-An essence of future

2. What is nanotechnology?
 Nanotechnology is science, engineering, and
technology conducted at the nanoscale
 Nanoscience and nanotechnology are the study and
application of extremely small things and can be used
across all the other science fields, such as chemistry,
biology, physics, materials science, and engineering.
 The father of nanotechnology is Physicist Richard
Feynman

3. HISTORY OF NANOTECHNOLOGY
 The ideas and concepts behind nanoscience and nanotechnology started with a talk
entitled “There’s Plenty of Room at the Bottom” by physicist Richard Feynman at an
American Physical Society meeting at the California Institute of Technology (CalTech)
on December 29, 1959, long before the term nanotechnology was used. In his talk,
Feynman described a process in which scientists would be able to manipulate and
control individual atoms and molecules. Over a decade later, in his explorations of
ultraprecision machining, Professor Norio Taniguchi coined the term nanotechnology.
It wasn’t until 1981, with the development of the scanning tunneling microscope that
could “see” individual atoms, that modern nanotechnology began.

4. Nanometre
Nanos is the greek word for “dwarf”
Scale of nano materials is between 1 to 100
nanometers
One nanometer (nm) is of one billionth or 10 -9
a metre

5. A DNA double helix is 2 nm Diameter

6. A Sheet of Newspaper is 100,000 nm

7. Origin
The microscopes needed to see things at
the nanoscale were invented in the early
1980s
The scaling tunneling microscope (STM)
and the atomic force microscope(AFM)
gave birth to age of nanotechnology

8. Significance of Nanotechnology
Unusual physical,Chemical and biological
properties can emerge in materials at the nanoscale
The bulk properties of materials often change
dramatically with nano ingredients ( For example,
macroscopic gold is inert, whereas at nanoscales
gold becomes extremely reactive and catalytic and
even melts at a lower temperature.

9. Advantages
 Manufacture lighter stronger and programmable materials.
 Require less energy to produce the conventional materials.
 Produce less waste than with conventional manufacturing
 Greater fuel efficiency in transportation
 Nanocoatings makes surfaces resistant to corrosion,scratches
and radiation.
 Nanoscale devices ( electronic, magnetic, mechanical) and
systems with extraordinary levels of information processing.

10. Disadvantages
Environmental problems
Safety hazards
Health issues

11. Applications
Everyday materials and processes
Electronics and IT applications
Energy applications
Environmental remediation
Medical and health care Applications
Future transportation benefits

12. Scope
 It has a huge scope in the upcoming generations.
 It is the third highest booming field when compared with
IT and Internet.
 The Indian government has already started Nanoscience
and Nanotechnology initiatives and various funding
agencies like the Department of Science and Technology.
 The areas where a nanotechnologist can seek employment
include biotechnology, agriculture, food, genetics, space
research, medicine and so on.

13. Conclusion
 Nanotechnology has been widely studied for its potential to
advance the field of biotechnology and medical research.
 Regulatory agencies such as the FDA have decided to oversee
the emerging field of nanotechnology through existing
legislative arrangements.
 The decision to refrain from introducing nanospecific
regulatory policies seems to be aimed at encouraging safe and
effective innovations by avoiding unnecessary regulatory
hurdles.