Loading patent…
AssigneeNativis, Inc.
InventorsJohn T. Butters, Bennett M. Butters, Lisa C. Butters
Estimating the term…
A method and apparatus for interrogating a sample that exhibits molecular rotation are disclosed. In practicing the method, the sample is placed in a container having both magnetic and electromagnetic shielding, and Gaussian noise is injected into the sample. An electromagnetic time-domain signal composed of sample source radiation superimposed on the injected Guassian noise is detected, and this signal is cross-correlated with a second time-domain signal produced by the same or similar sample, to produce a cross-correlated signal with frequency domain components. The latter is plotted in the frequency domain by a fast Fourier transform to produce a frequency domain spectrum in a frequency range within DC to 50 KHz. From this spectrum, one or more low-frequency signal components that are characteristic of the sample being interrogated are identified.
Apparatus for interrogating a sample that exhibits molecular rotation, comprising:
A method for interrogating a sample that exhibits molecular rotation, comprising:
The method of 18, wherein the container is an attenuation tube having a sample-holding region, a magnetic shielding cage surrounding the region, and a Faraday cage contained within the magnetic shielding cage and also surrounding the region, the noise is injected from a Gaussian noise generator and a Helmholz coil which is contained within the magnetic cage and the Faraday cage, and which receives a noise output signal from the noise generator, and which further includes, for use in removing stationary noise components in the time-dependent signal, a signal inverter operatively connected to the the noise source and to the SQUID, for receiving Gaussian noise from the noise source and outputting into the SQUID, Gaussian noise in inverted form with respect to the Gaussian noise injected into the sample.
A time-domain signal associated with a material of interest, produced by:
Dependencies are inferred from the claim text.