Effective Permittivity of Biological Tissue: Comparison of Theoretical Model and Experiment

Li, Gun; Ning, Du; Zhang, Liang

doi:10.1155/2017/7249672

Cited by 38 publications

(27 citation statements)

References 40 publications

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“…Putting a dielectric material in an electric field which varies with the applied field frequency and then the frequency-dependent permittivity of the material is called the dynamic permittivity [98]. Various models are used to describe the permittivity in terms of frequency.…”

Section: Dynamic Permittivity and Its Modelsmentioning

confidence: 99%

Cells Electrical Characterization: Dielectric Properties, Mixture, and Modeling Theories

Nasir

Ahmad

2020

Journal of Engineering

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Electrical detection of biotic materials and their properties is always crucial in Biomedical Engineering. It emphasizes elaborate analysis of a certain disease diagnosis using electrical means which includes the study of electrical properties followed by detection, identification, and quantification of biotic entities. Proper and early detection of cells, which can be normal or cancerous, holds never-ending demand. This review emphasizes the electrical characterization methods in modeling and classification of cell properties. Moreover, standard methods have been highlighted and discussed to yield performance analysis. This study suggests that techniques presented for single-cell analysis (SCA) are always precise and hold great scope compared to those for cell mixture. SCA plays a promising role in disease diagnosis and treatment planning, as it not only detects the cells but also helps in identification. Distinct electrical-based cell detection techniques are highlighted, along with the pros and cons of various SCA devices. The content, in terms of methodologies and available techniques, of this review paper is useful to attract researchers working in this area.

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Section: Dynamic Permittivity and Its Modelsmentioning

confidence: 99%

Cells Electrical Characterization: Dielectric Properties, Mixture, and Modeling Theories

Nasir

Ahmad

2020

Journal of Engineering

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“…Finally, when placed at the chest surface (hence loaded with the dielectric with relative permittivity around 45 [ 40 ]), the measured resonant frequency was 1880 MHz. The frequency shift about 200 MHz represents significant differentiation between the air and the tissue ( Figure 8 ).…”

Section: Bioimpedance Sensor Testingmentioning

confidence: 99%

Low Power Contactless Bioimpedance Sensor for Monitoring Breathing Activity

Pavlin

Novak

Papa

2021

Sensors

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An electronic circuit for contactless detection of impedance changes in a tissue is presented. It operates on the principle of resonant frequency change of the resonator having the observed tissue as a dielectric. The operating frequency reflects the tissue dielectric properties (i.e., the tissue composition and on the tissue physiological changes). The sensor operation was tested within a medical application by measuring the breathing of a patient, which was an easy detectable physiological process. The advantage over conventional contact bioimpedance measurement methods is that no direct contact between the resonator and the body is required. Furthermore, the sensor’s wide operating range, ability to adapt to a broad range of measured materials, fast response, low power consumption, and small outline dimensions enables applications not only in the medical sector, but also in other domains. This can be extended, for example, to food industry or production maintenance, where the observed phenomena are reflected in dynamic dielectric properties of the observed object or material.

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“…e results are correlated with the above-discussed PES results, which show that Cu complex could act as nucleophile, whereas Co complex is of enhanced electrophilic nature. e nucleophilicity of Cu complex (seeking for positively charged sites of the reactant) together with its electrical, thermodynamic, and molecular properties favors its promising inhibition activity towards HePG2 cancer cell [51][52][53].…”

Section: Cytotoxicitymentioning

confidence: 99%

Transition Metal Complexes of Mixed Bioligands: Synthesis, Characterization, DFT Modeling, and Applications

Abdel‐Mottaleb

Ismail

2019

Journal of Chemistry

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Divalent transition metal complexes [MGlu-Arg (H2O)]H2O and [MGlu-Arg (H2O)]H2O, where M = Co, Ni, Cu, and Zn, Glu = glutamic acid, and Arg = L-arginine, are prepared and characterized using different techniques. DFT and TD-DFT modelling validated and interpreted some experimental results. Weight loss technique reveals efficient corrosion inhibition action of these complexes towards aluminum metal at different temperatures. Our results point to corrosion inhibition through chemical adsorption on the aluminum surface. Additionally, a facile calcination of Co and Cu complexes at 550°C yields nanosized oxides of Co3O4, CoO, and CuO crystalline phases. The complexes show remarkable biological activities towards pathogenic bacteria and fungi. Moreover, in vitro anticancer activity evaluation of these complexes is achieved against hepatocellular carcinoma (HepG-2). The results are correlated with molecular descriptors such as chemical potential and hardness obtained from the frontier orbitals.

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Effective Permittivity of Biological Tissue: Comparison of Theoretical Model and Experiment

Cited by 38 publications

References 40 publications

Cells Electrical Characterization: Dielectric Properties, Mixture, and Modeling Theories

Cells Electrical Characterization: Dielectric Properties, Mixture, and Modeling Theories

Low Power Contactless Bioimpedance Sensor for Monitoring Breathing Activity

Transition Metal Complexes of Mixed Bioligands: Synthesis, Characterization, DFT Modeling, and Applications

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