An investigation has found that the physicist who claimed to have developed the world’s first room-temperature superconductor engaged in “research misconduct,” according to a report from The Wall Street Journal. Ranga Dias, a researcher and assistant professor at the University of Rochester, has been under investigation by a committee of outside experts since last August over concerns about the accuracy of his findings.

“The committee concluded, in accordance with University policy and federal regulations, that Dias engaged in research misconduct,” a spokesperson for the University of Rochester tells the Journal.

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