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Quantum Tunneling in Graphene Advances the Age of Terahertz Wireless Communications iconnect007.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from iconnect007.com Daily Mail and Mail on Sunday newspapers.
Credit: Daria Sokol/MIPT Press Office Scientists from MIPT, Moscow Pedagogical State University and the University of Manchester have created a highly sensitive terahertz detector based on the effect of quantum-mechanical tunneling in graphene. The sensitivity of the device is already superior to commercially available analogs based on semiconductors and superconductors, which opens up prospects for applications of the graphene detector in wireless communications, security systems, radio astronomy, and medical diagnostics. The research results are published in a high-rank journal Information transfer in wireless networks is based on transformation of a high-frequency continuous electromagnetic wave into a discrete sequence of bits. This technique is known as signal modulation. To transfer the bits faster, one has to increase the modulation frequency. However, this requires synchronous increase in carrier frequency. A common FM-radio transmits at frequencies of hundred meg ....