Detector of modulated terahertz radiation based on HEMT with mechanically floating gate

We consider a concept of a resonant detector of modulated terahertz radiation based on a micromachined high-electron-mobility transistor with a microcantilever serving as the mechanically floating gate. The device can exhibit both the plasma (in terahertz range) and mechanical (in megahertz or gigahertz range) resonances.