2022
DOI: 10.1038/s41598-022-11355-w
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Dielectric characterization and modelling of aqueous solutions involving sodium chloride and sucrose and application to the design of a bi-parameter RF-sensor

Abstract: This paper reports on dielectric properties of ternary mixtures involving sodium chloride (NaCl) and sucrose (C12H22O11) dissolved into water (H2O). Broadband electromagnetic characterizations of such mixtures at various concentrations were performed, evidencing a dual behavior made of conductive effects at low frequencies and dipolar relaxation at microwave frequencies. Conductive and dielectric properties resulting from these both effects were integrated into predictive models for variations of Cole–Cole mod… Show more

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Cited by 15 publications
(16 citation statements)
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References 59 publications
(56 reference statements)
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“…First, the presence of a lot of electrolytes increased the relative permittivity and dielectric loss below 1 GHz due to the resonance motion of ions which strongly absorb radio waves. 27 Second, a lot of glucose tended to slightly decrease the permittivity and increase the dielectric loss below 1 GHz. Finally, covering the hydrogel with paraffin paper, hydrogel + paper (w/NaCl and glu), significantly decreased the dielectric constant and dielectric loss and induced dielectric constant inflection points near 0.5 and 5 GHz, as observed in real skin.…”
Section: ■ Results and Discussionmentioning
confidence: 98%
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“…First, the presence of a lot of electrolytes increased the relative permittivity and dielectric loss below 1 GHz due to the resonance motion of ions which strongly absorb radio waves. 27 Second, a lot of glucose tended to slightly decrease the permittivity and increase the dielectric loss below 1 GHz. Finally, covering the hydrogel with paraffin paper, hydrogel + paper (w/NaCl and glu), significantly decreased the dielectric constant and dielectric loss and induced dielectric constant inflection points near 0.5 and 5 GHz, as observed in real skin.…”
Section: ■ Results and Discussionmentioning
confidence: 98%
“…Here, 20% gelatin gels composed of water or interstitial fluid (glucose 0 or 100 mM) are expressed as hydrogel (w/o NaCl), hydrogel (w/NaCl), and hydrogel (w/NaCl and glu). First, the presence of a lot of electrolytes increased the relative permittivity and dielectric loss below 1 GHz due to the resonance motion of ions which strongly absorb radio waves . Second, a lot of glucose tended to slightly decrease the permittivity and increase the dielectric loss below 1 GHz.…”
Section: Resultsmentioning
confidence: 99%
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“…En efecto, este parámetro es habitualmente empleado en otros escenarios de medida, como por ejemplo la caracterización dieléctrica [18]. Recientes estudios han demostrado sus potencialidades incluso para la medida multiparámetro [19], cosa que permite desarrollar estrategias híbridas de medida multicomponente en el entorno biológico [20].…”
Section: Principio De Medidaunclassified