Recently, the research team of Duke University in the United States has successfully developed a detector with fewer parts and higher image acquisition efficiency using a material with unique properties. Related research results were published online in Science recently.
According to reports, this new material is called "super material", and its microstructure is composed of square pores. Each square pore is tuned to pass light waves of a specific frequency. After this material is etched on the copper sheet, images can be collected to function as a traditional detector camera.
"Using this material, we can obtain microwave images of the detected object without resorting to lenses and related mechanical transmission devices in traditional detector cameras." The research team member, Duke University Pratt Institute of Electrical Engineering and Computer Graduate student John Hunt said.
He told reporters that after being etched in copper, this material has a strong plasticity and is durable. When in use, it can be hung on the wall of a security place or even be laid on the ground like a carpet. Since each aperture in the material can individually receive images formed by light waves of a certain frequency, a panoramic image of the detected object can be obtained by synthesizing images formed by light waves of different frequencies.
Hunter said that traditional detection instruments such as security inspection equipment in the airport need to scan objects with lenses and supporting mechanical transmission devices. "Before getting the image, you have to wait for the scanning process to finish. And each hole in the 'super material' is equivalent to a separate 'camera', so the detector made of this material can scan the whole immediately Objects and generate two-dimensional images. Their efficiency is much higher than traditional instruments, and allows us to compress and process images while acquiring them, "he said.
In addition, "the detector using this material as a" camera "no longer requires lenses, mechanical transmissions and supporting information storage and transmission systems." Another member of the research team, postdoctoral Tom Delis, a University of California, USA Cole said.
At present, researchers are improving this new type of detector to enable it to acquire three-dimensional images.
It is reported that the research was supported by the US Air Force Office of Scientific Research.
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