chemistry 1st sec |the concept of nanotechnology and its applications скачать в хорошем качестве

chemistry 1st sec |the concept of nanotechnology and its applications

Nanotechnology CHEMISTRY - Secondary 1 In This part we will study Applications of Nanotechnology A- Medical field: The early diagnosis of diseases and picturing of organs and tissues.  Accurate delivering of a medicine to the infected tissues and cells, which increases the chances of healing and decreases the harmful side effects of the traditional healing methods which don't distinguish between the infected cells and the other healthy ones. Producing Nano robots that enter the body through the blood- stream to remove blood clots from the vein walls without surgical interference.  Producing extremely small devices for dialysis that are implanted in the body of the patient who suffers from kidney failure. B- Agricultural field:  Identifying bacteria that found in nutrients. So, we can use this technology in preserving food.  Improving nutrients , pesticides and medicines for plants and animals with special features. C- Energy field:  Producing solar cells by using Nano silicon which has a great ability to convert solar energy into electrical energy and avoid the leakage of heat energy.  Producing hydrogen fuel cells, with a high performance and low cost. D- Industrial field:  Producing invisible Nano molecules, which give the glass and ceramics the property of self-cleaning.  Producing Nano substances to purify ultraviolet rays in order to improve sunblock cosmetics and creams.  Producing Nano wrapping technology in the form of paints and sprays to protect the screens of electrical devices from scratching.  Producing repellent tissues for stains that are characterized by the self-cleaning property. E- Communications field:  Producing wireless Nano devices, mobiles and satellites.  Decreasing the size of transistors.  Producing electric chips that are characterized by a high storage capacity. F- Environmental field: Producing Nano filters which are used to:  Purify air and water.  Solve the nuclear wastes problem.  Eliminate the dangerous elements from the industrial wastes. The possible harmful effects of Nanotechnology During the production of Nano substances, there are many wastes which can be very dangerous, because they may be suspended in air, then enter water and soil and they may easily penetrate the animal and plant cells. This is called Nano pollution: is the pollution caused by the wastes produced from preparing Nano substances. The very minute Nanoparticles may enter the body of human or animal through the cell membrane of the skin and lungs causing diseases. The social and economic problems between the rich world countries and the developing countries may increase, due to the unequal distribution of technology and economic resources.