Graphene nanoribbon based AM demodulator of terahertz radiation

We proposed a novel scheme of AM demodulator of terahertz radiation modulated by megahertz or gigahertz signals. Demodulator model is based on the nano-electromechanical system with the sufficiently narrow graphene nanoribbon as a mechanically moving part. Motion of a nanoribbon is supported by the electromagnetic ponderomotive force appearing due to the plasmon resonance exited in the system. Using developed model we obtained that the proposed demodulator has a number of advantages such as higher output signal and higher modulation frequency of incoming radiation in comparison with the previously proposed demodulators of terahertz radiation.