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Greater than 50 years ago, physicist Sir Roger Penrose proposed a remarkable idea: under the proper conditions, it may be possible to extract energy from a rapidly spinning black hole. In his concept, a particle entering the black hole’s ergosphere, a region where spacetime is dragged along by the thing’s rotation, could split into two. One fragment would fall into the black hole while the opposite escaped carrying away more energy than the unique particle. Later, physicist Yakov Zel’dovich expanded on this idea, predicting that waves interacting with an object rotating fast enough could also gain energy and turn into amplified.<\/p>\n
Now, researchers on the Advanced Science Research Center on the CUNY Graduate Center (CUNY ASRC) have demonstrated an experimental approach inspired by those long standing theories. Writing within the journal Nature<\/em>, the team showed that wave amplification may be achieved using a tool that simulates extreme rotation without physically spinning.<\/p>\n Synthetic Rotation Recreates Extreme Physics<\/strong><\/p>\n As a substitute of rotating an object mechanically, the researchers built a radio frequency device whose properties are rapidly modified across each space and time. This rigorously engineered system creates the illusion of ultrafast rotation, reaching effective rotational speeds far beyond what conventional mechanical systems can achieve. By replacing physical motion with synthetic rotation, the researchers overcame challenges which have limited experimental studies of utmost rotational physics for many years.<\/p>\n “Our approach facilitates a brand new approach to wave-matter interaction by which waves with chosen rotational properties extract energy from synthetic time-engineered rotation, producing a type of broadband selective amplification,” said principal investigator Andrea Al\u00f9, Distinguished Professor and Einstein Professor of Physics on the CUNY Graduate Center and founding director of the CUNY ASRC’s Photonics Initiative.<\/p>\n Lead creator Hadiseh Nasari, a post-doctoral researcher with the CUNY ASRC’s Photonics Initiative, said the experiment transforms an extended standing theoretical concept right into a practical research tool.<\/p>\n “This successful experiment moves ideas about extreme rotational dynamics from theory to practice and creates a flexible experimental platform for exploring a broad range of phenomena on the intersection of astrophysics, wave physics, and quantum science,” said Nasari. “The work has implications for advances in fundamental science and in communications, optics and photonics.”<\/p>\n How the Experiment Worked<\/strong><\/p>\n The researchers got down to answer a fundamental query: Could electromagnetic waves interacting with a very stationary device behave as if they were encountering an object rotating at ultrafast speed and draw energy from that synthetic motion?<\/p>\n To analyze, they constructed a hoop of electronic resonators whose properties were rapidly adjusted in a rigorously synchronized sequence. Although the hardware itself never moved, these timed changes generated a traveling pattern across the ring. In consequence, the electromagnetic waves effectively experienced the system as if it were spinning at extraordinary speed.<\/p>\n “Waves with the suitable rotational characteristics extracted energy from the system and have become amplified, reproducing the essential physics of the Penrose-Zel’dovich process,” said co-lead creator Hady Moussa, a former PhD student with the CUNY ASRC Photonics Initiative. “Our approach relies on engineered metamaterials which are designed to regulate how waves propagate.”<\/p>\n Potential Applications Beyond Black Hole Physics<\/strong><\/p>\n Because synthetic rotation can imitate motion beyond the speed of sunshine, researchers now have a controlled laboratory platform for exploring physical regimes that may otherwise be inconceivable to review directly. The work creates latest opportunities for investigating extreme physics while also pointing toward future advances in wireless communications, optics, photonics, and quantum technologies.<\/p>\n The researchers note that additional work will probably be needed before these ideas may be translated into practical devices. Additionally they consider the identical principles may very well be applied to photonic and quantum systems, opening latest possibilities for controlling light, processing information, and studying wave behavior inspired by a few of the universe’s most extreme environments.<\/p>\n The research was supported by the U.S. Department of Defense, the U.S. National Science Foundation, and the Simons Foundation.<\/em><\/p>\n<\/div>\n <\/p>\n","protected":false},"excerpt":{"rendered":" Greater than 50 years ago, physicist Sir Roger Penrose proposed a remarkable idea: under the proper conditions, it may be possible to extract energy from a rapidly spinning black hole. In his concept, a particle entering the black hole’s ergosphere, a region where spacetime is dragged along by the thing’s rotation, could split into two. […]<\/p>\n","protected":false},"author":1,"featured_media":365243,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[1305,939,30640,2203,7464,3150,11875],"class_list":["post-365242","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology","tag-black","tag-energy","tag-extraction","tag-hole","tag-lab","tag-physicists","tag-recreate"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t