Thin film non-symmetric microelectrode array for impedance monitoring of human skin

Ivanic, R.; Νovotný, I.; Řeháček, V.; Tvarožek, V.; Weis, Martin

doi:10.1016/s0040-6090(03)00389-4

Cited by 30 publications

(25 citation statements)

References 2 publications

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“…The semi‐circle at high frequency range represents the time constant for the skin, whereas the opening of the semi‐circle at lower frequency range can be attributed to the electrode‐skin interface. Several equivalent circuits for skin have been proposed in literature , a circuit commonly cited has been modified and used here .…”

Section: Resultsmentioning

confidence: 99%

Screen‐printed Tattoo Sensor towards the Non‐invasive Assessment of the Skin Barrier

Guzman

Morrin

2016

Electroanalysis

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The development and characterisation of a screen‐printed tattoo sensor for the non‐invasive assessment of the skin barrier is presented. A screen‐printed silver tattoo sensor comprising two concentric circle electrodes was fabricated and applied and characterised initially on a soft tissue mimic. It was shown that the tattoo was capable of tracking changes in water content in the soft tissue mimic using impedance spectroscopy. The tattoo sensors were then applied to porcine and human skins and impedance spectroscopy was used to interrogate the skin at the outer stratum corneum (SC). The SC is a layer of great interest from a dermatological point of view since it plays a critical role in the barrier function of the skin by protecting underlying tissue from infection, dehydration, chemical irritants and mechanical stress. Hydration changes were tracked in the skin using the impedance approach and validated against a tissue dielectric constant (TDC) measurement taken with the MoistureMeterD (MMD, Delfin Technologies). The impedimetric results obtained using the tattoo sensor were modelled into proposed circuit models representative of the systems measured. From this study, the potential of using wearable tattoo electrodes coupled with impedance spectroscopy as a transduction technique, to investigate skin barrier status offers considerable promise towards the monitoring and self‐management of skin health.

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Section: Resultsmentioning

confidence: 99%

Screen‐printed Tattoo Sensor towards the Non‐invasive Assessment of the Skin Barrier

Guzman

Morrin

2016

Electroanalysis

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“…In order to ascertain the theoretical basis of research question 2, prior to the experimental and the simulation assessments, an approximate analysis can be offered through a lumped impedance representation of the cases involving localised versus longer electrodes. It has generally been shown that the impedance of different tissue layers can be approximately represented by simplified lumped impedance models [24], [25], [26]with impedance magnitudes at the applied frequency considered. Following the geometric model presented previously, and assuming θ = 0, Fig.…”

Section: Lumped-impedance Simplified Representationmentioning

confidence: 99%

Modelling Dynamically Re-Sizeable Electrodes (DRE) for Targeted Transcutaneous Measurements in Impedance Plethysmography

Hashim

Constantinou

Triantis

2020

IEEE Trans. Biomed. Circuits Syst.

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“…Under these conditions skin conductivity increases, whereas during periods of relaxation the conductivity declines to a minimum [8,9,10]. From electrical model of IDA microelectrode/skin interface and simulations the important outcome has arisen: the electric field distribution and depth of penetration into the outer skin layers (epidermis laminar structures) depend on the configuration and size of electrode system [11,12]. This knowledge provides a possibility to examine different layers of epidermis by electrical impedance method and we used it for the analysis of electrophysiological processes in skin when the person is under the stress.…”

Section: ) Electro-optical Monitoring and Analysis Of Human Cognitivmentioning

confidence: 99%

Micro- / nano- structuralized interfaces of conductive and transparent thin-film microelectrodes for biomedical application

Vavrinský

Flickyngerová

Gaspierik

et al. 2009

2009 2nd International Symposium on Applied Sciences in Biomedical and Communication Technologies

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Planar thin-film microelectrodes have been developed based on conductive and transparent thin films of ZnO:Al which are applicable in biomedicine as well as in the thin film solar cells. Nano-structuralization of their interfaces (surfaces) was carried out by the ion-sputter etching and by the photo-assisted electrodeless chemical etching. Interdigital array of microelectrodes was verified as a very useful tool for biomedical application: the monitoring of blood state or psychogalvanic reflex.

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Thin film non-symmetric microelectrode array for impedance monitoring of human skin

Cited by 30 publications

References 2 publications

Screen‐printed Tattoo Sensor towards the Non‐invasive Assessment of the Skin Barrier

Screen‐printed Tattoo Sensor towards the Non‐invasive Assessment of the Skin Barrier

Modelling Dynamically Re-Sizeable Electrodes (DRE) for Targeted Transcutaneous Measurements in Impedance Plethysmography

Micro- / nano- structuralized interfaces of conductive and transparent thin-film microelectrodes for biomedical application

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