Please use this identifier to cite or link to this item: http://ricaxcan.uaz.edu.mx/jspui/handle/20.500.11845/1447
Title: Measurements of concentration differences between liquid mixtures using digital holographic interferometry
Authors: Guerrero Méndez, Carlos
Saucedo Anaya, Tonatiuh
Araiza Esquivel, María Auxiliadora
Balderas Navarro, Raúl Eduardo
López Martínez, Alfonso
Olvera Olvera, Carlos Alberto
Issue Date: 10-Mar-2017
Publisher: Polish Academy of Sciences
Abstract: We present an alternative method to detect and measure the concentration changes in liquid solutions. The method uses Digital Holographic Interferometry (DHI) and is based on measuring refractive index variations. The first hologram is recorded when a wavefront from light comes across an ordinary cylindrical glass container filled with a liquid solution. The second hologram is recorded after slight changing the liquid’s concentration. Differences in phase obtained from the correlation of the first hologram with the second one provide information about the refractive index variation, which is directly related to the changes in physical properties related to the concentration. The method can be used − with high sensitivity, accuracy, and speed − either to detect adulterations or to measure a slight change of concentration in the order of 0.001 moles which is equivalent to a difference of 0.003 g of sodium chloride in solutions. The method also enables to measure and calculate the phase difference among each pixel of two samples. This makes it possible to generate a global measurement of the phase difference of the entire sensed region.
URI: http://ricaxcan.uaz.edu.mx/jspui/handle/20.500.11845/1447
https://doi.org/10.48779/phqd-t541
ISSN: 0860-8229
Other Identifiers: info:eu-repo/semantics/publishedVersion
Appears in Collections:*Documentos Académicos*-- M. en Ciencias de la Ing.

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