What are the things that can shine in the dark? Believe that smart, you will soon think of the Pearl of the Night. The answer is good. But under the same conditions, what are the luminescent materials that are invisible to the naked eye? I believe this problem will really stump you. Because this is the latest secret material invented by American researchers, many people do not know yet.
However, to invent this material is indeed not an easy task. Because this material must meet two requirements, one is to emit light, and the other is to emit light, and it cannot be seen by the naked eye. Initially, the researchers used trivalent chromium ions to make this material. Trivalent chromium ions are a well-known near-infrared light emitting source, which meets those two standards. But unfortunately, the luminous secret material made with it can only last a few milliseconds, and it can't be charged, so it can continue to emit light.
Later, the researchers changed their minds. They used zinc to form a matrix, and then added a new type of crystalline material and phosphorescent material to create a secret material that meets the standards. Put this material anywhere outside the house, and it can emit near-infrared light continuously for more than two weeks after being exposed to sunlight for one minute. Scientists tested the new material in different environments and proved that this hidden material can be charged without being placed directly in the sun. It can be charged even in rainy days. It is really a secret to give a little light and shine. material.
This material is very useful in secret military activities such as night raids. As long as the night attack personnel and equipment are marked with this material, and wearing special night vision goggles, even if they are far away from each other, it can be easily Seeing the light from their own people and equipment, the enemy could not find them with the naked eye. In addition, this new material can also play a unique role in medicine, such as combining it with nanoparticles and attaching to cancer cells, which will undoubtedly expose the whereabouts of cancer cells, and so on.
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