System and method for analyzing a gas

A method for analyzing a gas, wherein:

• a gas to be analyzed is injected into a gas analysis system comprising:
• a fluidic channel intended for the flow of a gas to be analyzed,
• at least one detector laid out in said fluidic channel and adapted for measuring interactions of the gas with said detector, said detector comprising at least one resonator of the electromechanical nanosystem (NEMS) type and a heating system for heating at least a part of the detector,
• an actuation device for vibrationally actuating the resonator according to an excitation signal applied to an input of the detector, and
• a detection device adapted for providing an output electric signal representative of the vibrations of said resonator,
• a read-out device connected to an input of the detector and configured for simultaneously measuring, from the output signal of said at least one detector, the change in resonance frequency and the change in amplitude of the vibrations at the resonance frequency of the resonator, and
• a processing device configured for determining from said changes at least one fluidic characteristic of said gas,
• at least one resonator of a detector or network of detectors of said system is actuated for causing vibration of said resonator at a resonance frequency,
• an output signal representative of the vibration of the resonator or of the whole of the resonators of said detector or network of detectors is read out, and
• the resonance frequency and the amplitude of the vibrations at the resonance frequency of each detector are measured from the output signal simultaneously.

A method for analyzing a gas, wherein:

• a gas to be analyzed is injected into a gas analysis system comprising:
• a fluidic channel intended for the flow of a gas to be analyzed,
• at least one detector laid out in said fluidic channel and adapted for measuring interactions of the gas with said detector, said detector comprising at least one resonator of the electromechanical nanosystem (NEMS) type,
• an actuation device for vibrationally actuating the resonator according to an excitation signal applied to an input of the detector, and
• a detection device adapted for providing an output electric signal representative of the vibrations of said resonator,
• a read-out device connected to an input of the detector and configured for simultaneously measuring, from the output signal of said at least one detector, the change in resonance frequency and the change in amplitude of the vibrations at the resonance frequency of the resonator, and
• a processing device configured for determining from said changes at least one fluidic characteristic of said gas,
• at least one resonator of a detector or network of detectors of said system is actuated for causing vibration of said resonator at a resonance frequency,
• an output signal representative of the vibration of the resonator or of the whole of the resonators of said detector or network of detectors is read out, and
• the resonance frequency and the amplitude of the vibrations at the resonance frequency of each detector are measured from the output signal simultaneously, wherein the resonance frequency is measured on a selected resonance mode of the detector and the amplitude of the vibrations is measured on at least one higher resonance mode than said selected mode.