18-06-2012, 05:59 PM
Nano-Particulate Technology
[attachment=24761]
Feynman’s Vision in 1959
There is plenty of room at the bottom”
Microtechnology is a frontier to be pushed back, like HP, HV, LT
Ordinary machines could build small machines, which could build smaller machines,…. to atomic level
22 years later, first journal publication of article on molecular nanotechnology (Drexler, 1981)
What is nano technology?
The term nano technology refers to a broad range of technologies, all of which involve the utilisation of the properties of nano scale objects. Nano scale refers to the size regime of nanometers or 10 to the power of -9 meters. The properties of materials in this size regime are unique. Nano technologies became possible as a result of our capability to manipulate matter with atomic precision. At the scale of nanometer, all disciplines converge. Therefore,
nano technology is a fusion technology.
At this length scale, new properties and new phenomena come about. Materials start behaving differently. An example is reactive gold. Till now we knew only about noble metal gold, which does not change with time. Now we have highly reactive gold. In addition, we know of fluorescent and magnetic gold. This example suggests that numerous other materials with completely different properties could be made. This possibility is a result of the capability to manipulate matter at this length scale — the length scale of atoms.
Why is it necessary to know about nano technology?
Well, look at nature. Leaves make complex molecules called carbohydrates starting from a single carbon molecule, carbon-dioxide, present in air. These molecules make life possible for all of us. Every molecular assembly in nature is by this atom-by-atom approach. From amoeba to elephant is made this way. These synthetic routes are the most energy efficient, green and sustainable. The motion of a muscle fibre, or a flagellum is the result of nano technologies. Therefore, ultimately an understanding of these will help us to do things better, with improved efficiency — in much more eco-friendly, sustainable manner. Of course when you look at properties at this length scale, one may find new things. That drives the other side of scientific enquiry — curiosity.
Nano-Engineered Products
Semiconductor nano-crystallites for use in microelectronics
Ceramics for use in demanding environments
Polymers with enhanced functional properties
Transparent coatings with UV/ IR absorption properties, abrasion resistance
Static dissipative/ conductive films
Enhanced heat-transfer fluids
Catalysis
Topical personal care (e.g., sunscreen) & pharmaceutical applications
Ultrafine polishing of e.g., rigid mememory disks, optical lenses, etc.
[attachment=24761]
Feynman’s Vision in 1959
There is plenty of room at the bottom”
Microtechnology is a frontier to be pushed back, like HP, HV, LT
Ordinary machines could build small machines, which could build smaller machines,…. to atomic level
22 years later, first journal publication of article on molecular nanotechnology (Drexler, 1981)
What is nano technology?
The term nano technology refers to a broad range of technologies, all of which involve the utilisation of the properties of nano scale objects. Nano scale refers to the size regime of nanometers or 10 to the power of -9 meters. The properties of materials in this size regime are unique. Nano technologies became possible as a result of our capability to manipulate matter with atomic precision. At the scale of nanometer, all disciplines converge. Therefore,
nano technology is a fusion technology.
At this length scale, new properties and new phenomena come about. Materials start behaving differently. An example is reactive gold. Till now we knew only about noble metal gold, which does not change with time. Now we have highly reactive gold. In addition, we know of fluorescent and magnetic gold. This example suggests that numerous other materials with completely different properties could be made. This possibility is a result of the capability to manipulate matter at this length scale — the length scale of atoms.
Why is it necessary to know about nano technology?
Well, look at nature. Leaves make complex molecules called carbohydrates starting from a single carbon molecule, carbon-dioxide, present in air. These molecules make life possible for all of us. Every molecular assembly in nature is by this atom-by-atom approach. From amoeba to elephant is made this way. These synthetic routes are the most energy efficient, green and sustainable. The motion of a muscle fibre, or a flagellum is the result of nano technologies. Therefore, ultimately an understanding of these will help us to do things better, with improved efficiency — in much more eco-friendly, sustainable manner. Of course when you look at properties at this length scale, one may find new things. That drives the other side of scientific enquiry — curiosity.
Nano-Engineered Products
Semiconductor nano-crystallites for use in microelectronics
Ceramics for use in demanding environments
Polymers with enhanced functional properties
Transparent coatings with UV/ IR absorption properties, abrasion resistance
Static dissipative/ conductive films
Enhanced heat-transfer fluids
Catalysis
Topical personal care (e.g., sunscreen) & pharmaceutical applications
Ultrafine polishing of e.g., rigid mememory disks, optical lenses, etc.