08-03-2011, 03:48 PM
Presented by:
Jitender Sharma
[attachment=9802]
Nanotechnology
Introduction
There are different definitions regarding nanotechnology some of them are given below
1) The branch of engineering that deals with things smaller than 100 nanometers (especially with the manipulation of individual molecules)
2) Technology that works at the atomic or molecular level.
Technology used in Nanotechnology
The first use of the concepts in ‘Nanotechnology' (but pre-dating use of that name) was in "There's Plenty of Room at the Bottom," a talk given by physicist Richard Feynman at an American Physical Society meeting at Caltech on December 29, 1959. Feynman described a process by which the ability to manipulate individual atoms and molecules might be developed, using one set of precise tools to build and operate another proportionally smaller set, so on down to the needed scale. In the course of this, he noted, scaling issues would arise from the changing magnitude of various physical phenomena: gravity would become less important, surface tension and Vander Waals attraction would become more important, etc. This basic idea appears plausible, and exponential assembly enhances it with parallelism to produce a useful quantity of end products. The term "nanotechnology" was defined by Tokyo Science University Professor Norio Taniguchi in a 1974 paper as follows:
The Complete Process
Applications
There are many different applications of Nanotechnology .
Some of them are given below:-
1)Regarding Laptops:-
Battery life is becoming an increasingly important issue for mobile computing users. With screens getting larger and brighter and laptop CPUs getting more powerful .Batteries made by using Nano-particles can increase the backup up to 4.30 hrs to 5.00 hrs.
This is the major advantage of using nano-batteries.
2)Filtration:-
A strong influence of nanotechnology on waste-water treatment, air purification
and energy storage devices is to be expected. Mechanical or chemical methods can be used for effective filtration techniques. This can be done by use of membranes with suitable hole sizes, whereby the liquid is pressed through the membrane. Nonporous membranes are suitable for a mechanical filtration with extremely small pores smaller than 10 nm (“nanofiltration”) and may be composed of annotates.
3)Aerospace
Lighter and stronger materials will be of immense use to aircraft manufacturers, leading to increased performance. Spacecraft will also benefit, where weight is a major factor. Nanotechnology would help to reduce the size of equipment and thereby decrease fuel-consumption required to get it airborne.
4)Construction
Nanotechnology has the potential to make construction faster, cheaper, safer, and more varied. Automation of nanotechnology construction can allow for the creation of structures from advanced homes to massive skyscrapers much more quickly and at much lower cost.
5)Impressive gadgets
Through the means of nanotechnology science has designed a number of cool gadgets like micro fly, wireless ECG Patch
6)Optics
The first sunglasses using protective and antireflective ultrathin polymer coatings are on the market. For optics, nanotechnology also offers scratch resistant surface coatings based on nanocomposites. Nano-optics could allow for an increase in precision of pupil repair and other types of laser eye surgery.
Advantages
No moving parts.
High reliability.
Low power requirements.
Provide new capabilities that are presently not possible.
Jitender Sharma
[attachment=9802]
Nanotechnology
Introduction
There are different definitions regarding nanotechnology some of them are given below
1) The branch of engineering that deals with things smaller than 100 nanometers (especially with the manipulation of individual molecules)
2) Technology that works at the atomic or molecular level.
Technology used in Nanotechnology
The first use of the concepts in ‘Nanotechnology' (but pre-dating use of that name) was in "There's Plenty of Room at the Bottom," a talk given by physicist Richard Feynman at an American Physical Society meeting at Caltech on December 29, 1959. Feynman described a process by which the ability to manipulate individual atoms and molecules might be developed, using one set of precise tools to build and operate another proportionally smaller set, so on down to the needed scale. In the course of this, he noted, scaling issues would arise from the changing magnitude of various physical phenomena: gravity would become less important, surface tension and Vander Waals attraction would become more important, etc. This basic idea appears plausible, and exponential assembly enhances it with parallelism to produce a useful quantity of end products. The term "nanotechnology" was defined by Tokyo Science University Professor Norio Taniguchi in a 1974 paper as follows:
The Complete Process
Applications
There are many different applications of Nanotechnology .
Some of them are given below:-
1)Regarding Laptops:-
Battery life is becoming an increasingly important issue for mobile computing users. With screens getting larger and brighter and laptop CPUs getting more powerful .Batteries made by using Nano-particles can increase the backup up to 4.30 hrs to 5.00 hrs.
This is the major advantage of using nano-batteries.
2)Filtration:-
A strong influence of nanotechnology on waste-water treatment, air purification
and energy storage devices is to be expected. Mechanical or chemical methods can be used for effective filtration techniques. This can be done by use of membranes with suitable hole sizes, whereby the liquid is pressed through the membrane. Nonporous membranes are suitable for a mechanical filtration with extremely small pores smaller than 10 nm (“nanofiltration”) and may be composed of annotates.
3)Aerospace
Lighter and stronger materials will be of immense use to aircraft manufacturers, leading to increased performance. Spacecraft will also benefit, where weight is a major factor. Nanotechnology would help to reduce the size of equipment and thereby decrease fuel-consumption required to get it airborne.
4)Construction
Nanotechnology has the potential to make construction faster, cheaper, safer, and more varied. Automation of nanotechnology construction can allow for the creation of structures from advanced homes to massive skyscrapers much more quickly and at much lower cost.
5)Impressive gadgets
Through the means of nanotechnology science has designed a number of cool gadgets like micro fly, wireless ECG Patch
6)Optics
The first sunglasses using protective and antireflective ultrathin polymer coatings are on the market. For optics, nanotechnology also offers scratch resistant surface coatings based on nanocomposites. Nano-optics could allow for an increase in precision of pupil repair and other types of laser eye surgery.
Advantages
No moving parts.
High reliability.
Low power requirements.
Provide new capabilities that are presently not possible.
