Ultrasensitive nonlinear optical mass sensing based on a monolayer MoS2 nanoresonator

We propose a nonlinear optical mass sensor based on a suspended monolayer MoS2 nano-optomechanical resonator in all-optical domain. The masses of external particles (such as single influenza virus and HIV virus) landing onto the surface of the MoS2 resonator can be determined directly and accurately via using the nonlinear optical spectroscopy. This mass sensing proposed here may provide a nonlinear optical measurement technique in quantum measurements and biomedicine.