Interferometric measurement of a diffusion coefficient

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dc.contributor.authorRiquelme, Rodrigo
dc.contributor.authorLira, Ignacio
dc.contributor.authorPerez-Lopez, Carlos
dc.contributor.authorRayas, Juan A.
dc.contributor.authorRodriguez-Vera, Ramon
dc.date.accessioned2025-01-21T01:05:32Z
dc.date.available2025-01-21T01:05:32Z
dc.date.issued2007
dc.description.abstractTwo methods to measure the diffusion coefficient of a species in a liquid by optical interferometry were compared. The methods were tested on a 1.75 M NaCl aqueous solution diffusing into water at 26 degrees C. Results were D = 1.587 x 10(-9) m(2) s(-1) with the first method and D = 1.602 x 10(-9) m(2) s(-1) with the second method. Monte Carlo simulation was used to assess the possible dispersion of these results. The standard uncertainties were found to be of the order of 0.05 x 10(-9) m(2) s(-1) with both methods. We found that the value of the diffusion coefficient obtained by either method is very sensitive to the magnification of the optical system, and that if diffusion is slow the measurement of time does not need to be very accurate.
dc.fuente.origenWOS
dc.identifier.doi10.1088/0022-3727/40/9/015
dc.identifier.eissn1361-6463
dc.identifier.issn0022-3727
dc.identifier.urihttps://doi.org/10.1088/0022-3727/40/9/015
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95949
dc.identifier.wosidWOS:000246568800026
dc.issue.numero9
dc.language.isoen
dc.pagina.final2776
dc.pagina.inicio2769
dc.revistaJournal of physics d-applied physics
dc.rightsacceso restringido
dc.titleInterferometric measurement of a diffusion coefficient
dc.typeartículo
dc.volumen40
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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