As tiny particles flying at the speed of light, catching photons requires an advanced machine, and an international research team has just created a machine capable of doing this. The device, known as the world’s fastest ultraviolet camera, can capture ultra fast events lasting only picoseconds, fast enough to see ultraviolet photons flying through the air in real time. < / P > < p > the device is developed by scientists from the National Academy of Sciences of Canada, and its name is uv-cup. Compressed ultrafast photography (cup) is a new imaging technology, which has been used to capture hypervelocity events at the speed of trillions of frames per second, but so far it is limited to visible and near-infrared wavelengths. < / P > < p > “a lot of what happens on a very short time scale also happens on a very small spatial scale,” said Liang Jinyang, who led the study. “To see them, you need to perceive shorter wavelengths. Doing this in the ultraviolet and even X-ray range is a significant step towards this goal < / P > < p > to achieve this goal, the team first developed a special photocathode and integrated it into a so-called streak camera, a device specially developed for measuring ultrafast optical phenomena. The team also needs to develop a new algorithm to capture the data and construct it into images, Liang told new atlas. < / P > < p > “we need two steps to operate the camera,” he explained. “First, in data collection, the information in the instantaneous event is squeezed into a snapshot. Therefore, this snapshot is totally different from that taken by ordinary cameras… Second, the snapshot is input into the reconstruction algorithm to retrieve the movie. ” < / P > < p > the visual effects of these ultraviolet pulses, which show the real-time movement of photons, were captured using a compact device with an imaging speed of 0.5 trillion frames / second. < / P > < p > the team hopes to further improve its uv-cup camera by studying alternative materials for its photocathode, which is currently limited in efficiency. Another goal is to improve the speed of algorithm and image construction with the help of artificial intelligence. < / P > < p > UV cup is now being sent to a research laboratory in France, where it will be used to capture different physical phenomena. This may include the generation of laser plasma and ultraviolet fluorescence, which may help improve medical imaging techniques used to diagnose diseases. Didi Qingju bicycle has entered 150 cities

By ibmwl