Dielectric Spectroscopy in Biomaterials: Agrophysics

Khaled, Dalia El; Novas, Nuria; Gázquez, José Antonio; Perea-Moreno, Alberto-Jesús; Manzano‐Agugliaro, Francisco

doi:10.3390/ma9050310

Cited by 45 publications

(17 citation statements)

References 116 publications

(146 reference statements)

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“…For lower frequencies ionic relaxation is observed. One of the dielectric parameters used for the quality assessment of food based on dielectric spectroscopy is a relative dielectric loss coefficient [19]. The results of experiments and numerical calculations of tgδ for rape and honeydew honey are shown in Figs.…”

Section: Resultsmentioning

confidence: 99%

Numerical Methods in Loss Tangent of Honey - Properties Analysis

Dlugosz¹,

Pentoś²

2022

zntj

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Background. The quality assessments of food products often involve evaluating their electrical properties, including impedance, permittivity and dielectric loss factor. The measurements of food electrical characteristics provide an interesting alternative to time-consuming and expensive methods based on chemical parameter measurements. This report describes investigations into the effects of frequency on the electrical properties of honey. Specifically, honey electrical properties were tested under an electromagnetic field with frequency ranging from 1 kHz to 1 MHz. Results and conclusion. Both experimental and numerical methods were used in this study. Double verification yielded identical results, which confirmed that the numerical method applied and the computational conditions were selected appropriately. The most important feature and the most significant advantage of the numerical approach is the possibility to predict the behavior of the actual object based on its mathematical model. It is much easier and faster to perform computer simulations than to perform the corresponding measurements under real-life conditions. Numerical simulations are also extremely useful when experiments are too dangerous to perform, i.e. when the electromagnetic field being studied can pose a threat to the health or life of a tested subject. The main drawbacks of computer simulations are the restraints of computing resources and the long duration of calculations.

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Section: Resultsmentioning

confidence: 99%

Numerical Methods in Loss Tangent of Honey - Properties Analysis

Dlugosz¹,

Pentoś²

2022

zntj

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“…Schwan was the first to study the dielectric properties of biological tissues in 1957 and realized that both permittivity (Ɛ) and conductivity (σ) are frequency dependent factors (21). Permittivity is the ability to permit storage of electric energy (7) and is a measure of the system response when an electric field is applied (16,22).…”

Section: Electrical Properties Of Biological Tissuesmentioning

confidence: 99%

Applications of bioimpedance measurement techniques in tissue engineering

Amini

Hisdal

Kalvøy

2018

Journal of Electrical Bioimpedance

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Rapid development in the field of tissue engineering necessitates implementation of monitoring methods for evaluation of the viability and characteristics of the cell cultures in a real-time, non-invasive and non-destructive manner. Current monitoring techniques are mainly histological and require labeling and involve destructive tests to characterize cell cultures. Bioimpedance measurement technique which benefits from measurement of electrical properties of the biological tissues, offers a non-invasive, label-free and real-time solution for monitoring tissue engineered constructs. This review outlines the fundamentals of bioimpedance, as well as electrical properties of the biological tissues, different types of cell culture constructs and possible electrode configuration set ups for performing bioimpedance measurements on these cell cultures. In addition, various bioimpedance measurement techniques and their applications in the field of tissue engineering are discussed.

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“…One of the most comprehensive ways to understand the electrical properties of biomaterials is to consider their impedance spectroscopy (IS). IS (10 to 10 9 Hz) has been successfully applied to understand ailments related to abnormalities in the bladder, 9 detect changes in the tissues on the application of high voltages, 10 and developing myocardial models for cardiovascular and respiratory systems. 11 The Cole−Cole plot (Z′(ω) vs Z′(ω)) in IS is a widely used tool for understanding the behavior of biomaterials' response to alternating electric fields.…”

Section: Introductionmentioning

confidence: 99%

Impedance Spectroscopy and ac Conductivity in Ba_0.5Sr_0.5TiO₃–Ca₁₀(PO₄)₆(OH)₂ Ceramic Composites: An Electrical Approach to Unveil Biocomposites

Das

Pamu

2021

ACS Biomater. Sci. Eng.

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We report bioceramic composites of varying concentrations of Ba 0.5 Sr 0.5 TiO 3 (BST) and Ca 10 (PO 4 ) 6 (OH) 2 (HAP) for the analysis of electrical properties. The motivation is to predict the suitability of the composites for bio-electrets or the practical possibility in designing electro-active scaffolds. X-ray diffraction (XRD) and field-emission scanning electron microscopy (FESEM) are used to analyze the microstructural evolution of the composites. A systematic variation in the grain and crystallite sizes is noticed from the FESEM and XRD, along with the presence of Sr 5 (PO 4 ) 3 (OH) (SAP). The temperature and frequency variations of the dielectric properties of the composites are studied. Modeling of the dielectric properties with the microstructural properties and at. % of the monolith BST is presented. Cole−Cole formalism is adopted to model the electrical behavior of the synthesized composites. Furthermore, the ac conductivity analysis reveals that Mott's variable range hopping (VRH) conduction is the most appropriate formalism that successfully describes the conduction process. The established Mott's VRH is also related to the polarization mechanisms active in the specimens. Our study projects a correlation between the electrical and biological properties by predicting the protein adsorption behavior from the perspective of impedance spectroscopy.

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Dielectric Spectroscopy in Biomaterials: Agrophysics

Cited by 45 publications

References 116 publications

Numerical Methods in Loss Tangent of Honey - Properties Analysis

Numerical Methods in Loss Tangent of Honey - Properties Analysis

Applications of bioimpedance measurement techniques in tissue engineering

Impedance Spectroscopy and ac Conductivity in Ba_0.5Sr_0.5TiO₃–Ca₁₀(PO₄)₆(OH)₂ Ceramic Composites: An Electrical Approach to Unveil Biocomposites

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Dielectric Spectroscopy in Biomaterials: Agrophysics

Cited by 45 publications

References 116 publications

Numerical Methods in Loss Tangent of Honey - Properties Analysis

Numerical Methods in Loss Tangent of Honey - Properties Analysis

Applications of bioimpedance measurement techniques in tissue engineering

Impedance Spectroscopy and ac Conductivity in Ba0.5Sr0.5TiO3–Ca10(PO4)6(OH)2 Ceramic Composites: An Electrical Approach to Unveil Biocomposites

Contact Info

Product

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About

Impedance Spectroscopy and ac Conductivity in Ba_0.5Sr_0.5TiO₃–Ca₁₀(PO₄)₆(OH)₂ Ceramic Composites: An Electrical Approach to Unveil Biocomposites