Презентация по английскому языку на тему "Нанотехнологии" (11класс)

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  Nanotechnology is the skill of building very small machines by using computer technology
  Nanotechnology
  

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  Nanotechnology in our lives
  Major benefits of nanotechnology include improved manufacturing methods, water purification systems, energy systems, physical enhancement, nanomedicine, better food production methods and nutrition and large scale infrastructure auto-fabrication. Nanotechnology's reduced size may allow for automation of tasks which were previously inaccessible due to physical restrictions, which in turn may reduce labor, land, or maintenance requirements placed on humans. Potential risks include environmental, health, and safety issues; transitional effects such as displacement of traditional industries as the products of nanotechnology become dominant, which are of concern to privacy rights advocates. These may be particularly important if potential negative effects of nanoparticles are overlooked.
  

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  Nanotechnolohy application
  The image on the computer screen is transmitted in pixels-tiny dots. Because of the number of such points, rather than their size or shape, the quality of the image depends. If you increase the number of pixels on traditional monitors, it is automatically necessary to increase the size of the screen itself, the Leading manufacturers are just busy selling large screens to the consumer. Understanding the prospects of nanopixels, researchers at the University of Oxford have come up with a way to create pixels several hundred nanometers in diameter. During the experiment, when scientists sandwiched between transparent electrodes several layers, 300 by 300 nanometers each, of GST material as a pixel, they obtained an image of high quality and high contrast. Nanopixels due to their tiny size will be much more practical than traditional and can become the basis for the development of optical technologies, such as smart glasses, artificial retina and folding screen. In addition, nanotechnology is not energy-intensive, as it is able to update only part of the screen to transmit the image, which requires less energy.
  High resolution screens
  

• 4 слайд

  Paint that can change color
  Experimenting with gold nanoparticles, scientists at the University of California noticed that when stretched or compressed in a surprising way changes the color of the gold thread from bright blue to purple and red. They came up with the idea to create special sensors made of gold nanoparticles to indicate certain processes that in one way or another will affect the particles. For example, if you install a similar sensor on the furniture, it will be possible to determine whether a person is sitting or sleeping.
  To create such sensors, scientists added gold nanoparticles to the plastic film. The moment the film was exposed, it stretched, and the gold nanoparticles changed color. When pressed lightly, the sensor turned purple, and when pressed hard, it turned red. Silver particles, for example, are also able to change color, but on yellow. Such sensors, despite the use of precious metals, will not be expensive, as their size is negligible.