Making the Wafer
The process
-A seed crystal is suspended in a molten bath of silicon
-It is slowly pulled up and grows into an ingot of silicon
-The ingot is removed and ground down to diameter
-The end is cut off, then thin silicon wafers are sawn off (sliced) and polished
Epitaxy
The growth of an ultra-pure layer of crystalline silicon
Approx 3% of wafer thickness
Contaminant-free
Nanoparticles present possible dangers
- due to the high surface to volume ratio
pass through cell membranes in organisms
Smaller nanoparticles evinced increased cytotoxicity.
Self-assembly :
process that disordered system of components forms an organized structure or pattern
The device is switched on - >
the pump pushes ions across the lipid membrane,
process is suitable, and the suitable process ML2 for double / mutilful patterning. High cost of the process as well as higher resolution is required, but patterning is very useful as the above benefits. It has a resolution of tens of nanometers. But disadvantages of the nano-implant is it doesn't fall from mold.
4. directed self assembly
Self assembly has the advantage that can easily get
process of Boeing
Normally, If you want to buy a new airplane, First step is “Make an order” To develop new airplane, Boeing gathered customer opinions, and make an effort to make ideal new airplane. For example, Customer’s needs are “Flight longer than last model”, “Space for passenger is larger than last model” So Boeing make a new airplane.
Design process is needed for co
·AIngva Kamprad
(the founder)
· Elmtaryd Agunnaryd
(the founder’s hometown)
· Established in 1943
1940s-1950s Develop assembly furniture
1960s-1970s hero products
1980s expands to USA, Italy,
France, UK…
1990s-2000s expands to Japan,
Russia…
(중략)
Other existing companies
Raw materials are processed to a complete furniture.
Downt