Method for determining effective diffusivity of substances through porous materials
US7744741B2 · kind B2 · utility
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2References
9Claims
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Key dates
| Filing date | Nov 23, 2005 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Oct 21, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a new method to obtain an effective diffusivity for a certain substance in solutions that diffuse through a porous material. The porous material initially separates two solutions that are different in concentration of the substance. The concentration gradient gives rise to diffusion through the porous material, The concentration change of the substance in the low-concentration compartment is detected through a measurement of the electrochemical impedance data. By means of the measurement, an effective diffusivity coefficient of the substance through the porous material is calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.