Scientists have learned how to create a cheap infrared camera: why they are needed?

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2019-03-10 13:30:07

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Scientists have learned how to create a cheap infrared camera: why they are needed?

Cameras that catch invisible to the human eye, infrared radiation can be extremely useful both in scientific equipment and consumer technology. For example, they can be used in smartphones, adding the function of imager, and also vehicles with the autopilot to recognize pedestrians. Manufacturers can't implement them in their products only because of their high cost, but a group of scientists from the University of Chicago figured out how to reduce the cost of technology and make the infrared camera is a mainstream product.

Since the wavelength of infrared radiation is much smaller than visible light, to capture them required more advanced the filling chamber. In particular, they need several layers of semiconductors in the manufacture of which often causes errors, which lead to high costs. That's why the researchers decided that they should use other technology capture short and medium wave infrared light.

The Researchers Xin tan and Philippe Guyot-Sionnest explained that for this purpose the perfect nanoparticles, called quantum dots. They can be configured to capture various wavelengths and in this range just wave infrared radiation. Short waves give information on the texture and chemical composition of the object, and medium — temperature. The researchers set up two sets of quantum dots on different waves and combined them together, put them in layers on a silicon wafer.

The Collection of several wavelengths in the infrared range gives you more spectral information is still that black and white TV color.

Blue Tang, one of the authors of the project

The Researchers claim that this approach significantly reduces the cost of infrared cameras by reducing spending on materials and time savings. In just a few minutes you can create a device that capabilities virtually will not concede to expensive cameras.

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