Chinese physicists have designed and printed aluminium alloy metaslim shell of metamaterial in the form of a normal distribution. This device allows you to hide objects from infrared detectors under an angle up to 30 degrees. Article published in the journal Advanced Functonal Materials.
Metamaterials are composite materials in which functional unusual appear due to the artificial periodic structure. In particular, it is possible to achieve a negative or zero refractive index. Using metamaterials, scientists made camouflage devices to hide the object two years ago, Chinese physicists have developed a metamaterial capable of hiding an object from underwater acoustic detectors. Read more about this application of metamaterials we were told in the material “anatomy of a cap of darkness”.
Scientists have learned to hide thermal radiation (detective infrared cameras) using adaptive thermoelectric devices, mainly focusing on the electrical response of the materials used. Metamaterials are also used for this purpose, the inventors constructed a radiative cloak, designed based on termatika — controlled conductivity heat flow (temperature of the background is actually projected onto the surface of the cloak due to the network of teplovogo). But such solutions only work for a flat architecture, when the detector is looking at a known angle — the practical application of such jets requires a wide range of viewing angles of the detector.
Yu-Kuei Peng (Yu-Gui Peng) with colleagues from Huajumbaro University of science and technology designed and printed on a 3D printer metaslim (sheath of metamaterial) for wide-angle radiative thermocouples in the form of a three-dimensional analogue of a Gaussian curve (normal distribution). With the help of scientists hid the objects from surveillance IR cameras at different angles.