Method and device for multiplexed spectro-rheological measurements
OwnerChristopher J. Manninginventor
Life of this patent
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Abstract
Three or more frequency components are used as deformation waveforms to perturb a sample during spectroscopic measurement. Simultaneously measuring more than one frequency allows for multiplexing. Further, many frequencies insure that the optimal perturbation frequencies for a particular measurement are present. The multiplex advantage of a particular spectroscopic instrument may accrue simultaneously with a multiplex advantage in the characterization of the time dependence of the sample response.
Claims12
A spectrometer for making multiplexed spectro-rheological measurements, comprising:
- a source of radiant energy;
- a sample holder for holding a sample in the path of the radiant energy;
- a force transfer device secured to the sample holder;
- a frame member that secures the force transfer device so as to enable the force transfer device to transfer at least a deformation force to the sample;
- a transducer also secured to the frame and acting on the force transfer device so as to impart a change in force to the sample based on a pseudorandom waveform signal;
- a waveform generator for generating the waveform signal and transferring the waveform signal to the transducer, the waveform signal having three or more discrete frequency components;
- a detector that receives radiant energy after it has interacted with the sample.
A spectrometer for making multiplexed spectro-rheological measurements, comprising:
- a source of radiant energy;
- a sample holder for holding a sample in the path of the radiant energy;
- a force transfer device secured to the sample holder;
- a frame member that secures the force transfer device so as to enable the force transfer device to transfer at least a deformation force to the sample;
- a transducer also secured to the frame and acting on the force transfer device so as to impart a change in force to the sample based on a pulsed waveform signal;
- a waveform generator for generating the waveform signal and transferring the waveform signal to the transducer, the waveform signal having three or more discrete frequency components;
- a detector that receives radiant energy after it has interacted with the sample.
A spectrometer for making multiplexed spectro-rheological measurements, comprising:
- a source of radiant energy;
- a sample holder for holding a sample in the path of the radiant energy;
- a force transfer device secured to the sample holder;
- a frame member that secures the force transfer device so as to enable the force transfer device to transfer at least a deformation force to the sample;
- a transducer also secured to the frame and acting on the force transfer device so as to impart a change in force to the sample based on a random waveform signal;
- a waveform generator for generating the waveform signal and transferring the waveform signal to the transducer, the waveform signal having three or more discrete frequency components;
- a detector that receives radiant energy after it has interacted with the sample.
Dependencies are inferred from the claim text.