Asteroid impacts create diamond materials with exceptionally complex structures uclnews PNASNews
is unusual due to the unique environments of carbon atoms occurring at the interface between diamond and graphene. They also demonstrated that the diaphite structure is responsible for a previously unexplained spectroscopic feature.
Study co-author Professor Chris Howard said,"This is very exciting since we can now detect diaphite structures in diamond using a simple spectroscopic technique without the need for expensive and laborious electron microscopy." According to the scientists, the structural units and the complexity reported in the lonsdaleite samples can occur in a wide range of other carbonaceous materials produced by shock and static compression or by deposition from the vapor phase.
Study co-author Professor Christoph Salzmann said,"Through the controlled layer growth of structures, it should be possible to design materials that are both ultra-hard and also ductile, as well as have adjustable electronic properties from a conductor to an insulator.with exciting mechanical and electronic properties that may result in new applications ranging from abrasives and electronics to nanomedicine and laser technology.
As well as drawing attention to the exceptional mechanical and electronic properties of the reported carbon structures, the scientists also challenge the current simplistic structural view of the mineral denoted asThe researchers are also grateful to the late co-author Professor Paul McMillan, who was the Sir William Ramsay Chair of Chemistry at UCL, for bringing the team together, his tireless enthusiasm for this work and his lasting contributions to the field of diamond research.
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