Ozturk, M.Coskun, R.Okutan, M.Yalcin, O.Kirsoy, A.2024-11-072024-11-0720220921-45261873-2135https://doi.org/10.1016/j.physb.2022.413774https://hdl.handle.net/11480/16121Structural, optical and dielectric properties determining the conduction mechanism were investigated using appropriate measurement techniques to determine the suitability of low-concentrations (LC) (1000 mu L, 500 mu L, 250 mu L and 125 mu L) reactive red 45 (RR-45) dye loaded hydrogels for electrical circuit applications. The UV spectra of the all samples displayed a fluctuating behaviour depending on the concentration. It was found that the dielectric plane plots for all the samples are compatible with the Cole-Cole relaxation model and correspond to an equivalent electrical circuit (RC) representing with the impedance circuit in the Smith Chart. It was concluded that RR-45 dye loaded hydrogels could be a suitable material for electrodes used in electroenceph-alography and electrocardiography systems due to the decrease of the real part of complex dielectric constant and impedance values with increasing frequency. The s-parameter for the samples, which determines the con-ductivity mechanism, was calculated separately for different regions.eninfo:eu-repo/semantics/closedAccessReactive red 45 dyeDielectric propertiesUV spectraCole-cole plotsImpedance circuitSmith chartArticle63310.1016/j.physb.2022.4137742-s2.0-85124698714Q2WOS:000790012400003Q3