night vision becomes a reality? Scientists invent nanocrystalline film to make night no longer dark!

for modern people, no electricity is really a very painful thing, especially at night, no electricity means no light. In such an environment, it is difficult for human beings to see things clearly, but animals are different. For example, owls, domestic cats, domestic dogs and other animals have night vision ability.

, it is precisely because they have night vision that domestic cats can catch mice in a dark environment, while owls have stronger night vision. It is said that owls have the same vision at night as human beings in dusk.

birds have the ability to fly, humans make airplanes. Can humans rely on science and technology to achieve night vision? Some people may say that the purpose of night vision can be achieved by far-infrared thermal imaging night vision, but this kind of instrument is too complicated and has many inconveniences to use,Therefore, an Australian university has developed a film that can achieve night vision by simply installing it on glasses..

According to Xinhua News Agency, the Australian National University issued a communiqué stating that the university's researchers have developed a thin film composed of nanocrystals in an international team that can be installed on glasses in the future so that humans can see in the dark. Things are up.

want to solve the problem that human beings cannot see objects clearly at night, we must find the cause of this phenomenon. The reason why human beings see objects is because of the reflection of light. Therefore, if objects cannot reflect light in a dark environment, our eyes will naturally not be able to see them.

, this film uses this principle. Only by installing this film on glasses, human beings can see objects clearly in the dark.

It is reported that this nanocrystal is made of gallium arsenide. Researchers first turn the initial material into a nanoscale film, and then combine the intense pump light and infrared images of the target in the film. Pumping is a process that uses light to "pump" electrons from the lower energy level of atoms or molecules to the higher energy level. After processing, the target image can be converted from a low-energy infrared light image to a higher energy in the film. Light image. Through this principle, human beings can see those objects in the dark.

need to be used at low temperatures, and they are also very sensitive to thermal noise. In addition, these devices are usually large in size and high in cost. Therefore, in contrast, this new technology is not only The environmental requirements are not high, and the advantages of light weight, low cost, and easy mass production will be more convenient for people to use.