Showing posts with label Advantages and Disadvantages of Nanotechnology... Show all posts
Showing posts with label Advantages and Disadvantages of Nanotechnology... Show all posts

Thursday, February 20, 2014

Nanotechnology Quiz

                

                                                         gkexamforever.blogspot.com

 Nanotechnology Quiz


1. Who is generally credited with the first serious scientific claim that manufacturing on the molecular or even the atomic scale was possible? The claim was made at California Technical Institute and was called, "There's Plenty of Room at the Bottom".

a) Richard P. Feynman
b) Ed Regis
c) K. Eric Drexler
d) Ralph Merkle

The correct answer is a) Richard P. Feynman


2. In 1986, Dr. K. Eric Drexler published a book for the layman that gave a wide overview of the potential applications of molecular nanotechnology in such areas as computing, medicine, space science, and the military. What was the name of this ground-breaking book?

a) Smaller is Better
b) Engines of Creation
c) A Crowded Blueprint
d) The Atomic Cookbook

The correct answer is b) Engines of Creation

3. A particular molecule of carbon made up of sixty carbon atoms has received some press as a structure that shows promise as a basicbuilding block in the area of molecular manufacturing. What is the whimsical nontechnical name for these molecules?


a) Fullerrods
b) Nanonodes
c) Buckyballs
d) Nanocubes

The correct answer is c) Buckyballs


4. What is the general name for the class of structures made of rolled up carbon lattices?

a) Nanorods
b) Nanotubes
c) Nanosheets
d) Fullerrods

The correct answer is b) Nanotubes

5. Nano, as a prefix, denotes what order of magnitude?

a) 10^-6
b) 10^-3
c) 10^-12
d) 10^-9

The correct answer is d) 10^-9


6. What is the term used in the field of nanotechnology to describe an as-yet theoretical device that "will be able to bond atoms together in virtually any stable pattern?"

a) Stacker
b) Replicator
c) Assembler
d) Constructor

The correct answer is c) Assembler

7. 
In discussions of the potential of molecular nanotechnology, the possibility has been posited that badly or maliciously designed self-assembling structures could get out of control, and destroy or disassemble all structures they encounter in their blind quest to replicate. What is the term for such a structure or group of structures?

a) Blue goo
b) Green Goo
c) Red goo
d) Gray goo

The correct answer is d) Gray goo


8. Scientists discussing the potential of molecular nanotechnology realized the possibility that self-assembling molecular constructs could conceivably get out of control and destroy just about anything. This led to the concept that other constructs could be designed to neutralize and/or destroy the rogue substances before they got out of hand. By what colorful term are these theoretical "antibody" substances collectively known?

a) Gray goo
b) Green goo
c) Red goo
d) Blue goo

The correct answer is d) Blue goo

9. 
Many challenges exist to be overcome before molecular manufacturing can truly reach maturity as an applied science. Which of the following is such a challenge when designing molecular machinery?

a) Thermal noise
b) Complexity of design
c) Quantum fluctuation
d) All of these

The correct answer is d) All of these

10. As of public record at the end of 2002, which country was making the greatest annual investment in molecular nanotechnology research?

a) Russia
b) United States
c) Japan
d) South Korea

The correct answer is c) Japan

Wednesday, January 29, 2014

Advantages and Disadvantages of Nanotechnology..


     Advantages of Nanotechnology
To enumerate the advantages and disadvantages of nanotechnology, let us first run through the good things this technology brings:
  • Nanotechnology can actually revolutionize a lot of electronic products, procedures, and applications. The areas that benefit from the continued development of nanotechnology when it comes to electronic products include nano transistors, nano diodes, OLED, plasma displays, quantum computers, and many more.
  • Nanotechnology can also benefit the energy sector. The development of more effective energy-producing, energy-absorbing, and energy storage products in smaller and more efficient devices is possible with this technology. Such items like batteries, fuel cells, and solar cells can be built smaller but can be made to be more effective with this technology.
  • Another industry that can benefit from nanotechnology is the manufacturing sector that will need materials like nanotubes, aerogels, nano particles, and other similar items to produce their products with. These materials are often stronger, more durable, and lighter than those that are not produced with the help of nanotechnology.
  • In the medical world, nanotechnology is also seen as a boon since these can help with creating what is called SMART DRUG. These help cure people faster and without the side effects that other traditional drugs have. You will also find that the research of nanotechnology in medicine is now focusing on areas like tissue regeneration, bone repair, immunity and even cures for such ailments like cancer, diabetes, and other life threatening diseases.

      Disadvantages of Nanotechnology


When we r discussing  the advantages and disadvantages of nanotechnology, you will also need to point out what can be seen as the negative side of this technology:
  • Included in the list of disadvantages of this science and its development is the possible loss of jobs in the traditional farming and manufacturing industry.
  • You will also find that the development of nanotechnology can also bring about the crash of certain markets due to the lowering of the value of oil and diamonds due to the possibility of developing alternative sources of energy that are more efficient and won’t require the use of fossil fuels. This can also mean that since people can now develop products at the molecular level, diamonds will also lose its value since it can now be mass produced.
  • Atomic weapons can now be more accessible and made to be more powerful and more destructive. These can also become more accessible with nanotechnology.
  • Since these particles are very small, problems can actually arise from the inhalation of these minute particles, much like the problems a person gets from inhaling minute asbestos particles.
  • Presently, nanotechnology is very expensive and developing it can cost you a lot of money. It is also pretty difficult to manufacture, which is probably why products made with nanotechnology are more expensive