发明名称 |
SYSTEM AND METHOD FOR CHARACTERIZING A SAMPLE BY LOW-FREQUENCY SPECTRA |
摘要 |
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 used to generate a spectral plot that displays, at a selected power setting of the Gaussian noise source, low-frequency spectral components characteristic of the sample in a selected frequency range between DC and 50 kHz. In one embodiment, the spectral plot that is generated is a histogram of stochastic resonance events over the selected frequency range. From this spectrum, one or more low-frequency signal components that are characteristic of the sample being interrogated are identified.
|
申请公布号 |
CA2538988(C) |
申请公布日期 |
2011.02.15 |
申请号 |
CA20042538988 |
申请日期 |
2004.10.08 |
申请人 |
WAVBANK, INC. |
发明人 |
BUTTERS, BENNETT M.;NAUGHTON, PATRICK;LEONARD, MICHAEL;VOREADES, DEMETRIOS;CALIXTO DE ANDRADE, MARCIO |
分类号 |
G01R33/02;G01F19/00;G01N37/00;G01R23/00;G01R23/16 |
主分类号 |
G01R33/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|