Analysis of the effect of low dye concentration for electrical system applications of reactive red 45 dye loaded hydrogels

Öztürk M., COŞKUN R., OKUTAN M., Yalçın O., Kırsoy A.

Physica B: Condensed Matter, vol.633, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 633
  • Publication Date: 2022
  • Doi Number: 10.1016/j.physb.2022.413774
  • Journal Name: Physica B: Condensed Matter
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: Reactive red 45 dye, Dielectric properties, UV spectra, Cole-cole plots, Impedance circuit, Smith chart, DIELECTRIC-PROPERTIES, SYNTHETIC CIRCUITS, GOLD NANOPARTICLES, OPTICAL-PROPERTIES, RHODAMINE-B, CONDUCTIVITY, ABSORPTION, DISPERSION, CONSTANT, MODULUS
  • Yıldız Technical University Affiliated: Yes

Abstract

© 2022 Elsevier B.V.Structural, optical and dielectric properties determining the conduction mechanism were investigated using appropriate measurement techniques to determine the suitability of low-concentrations (LC) (1000 μL, 500 μL, 250 μL and 125 μL) 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 electroencephalography 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 conductivity mechanism, was calculated separately for different regions.