Journal
MATERIALS ADVANCES
Volume 2, Issue 4, Pages 1369-1377Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ma00985g
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Funding
- University of Wollongong (UOW)
- Australian Research Council Centre of Excellence for Electromaterials Science [CE140100012]
- Higher Committee for Education and Development Scholarship Program of Iraq
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Soft and living electrodes, such as those made from green algae embedded in alginate hydrogel, show promising conductivity values for use in simple electrical circuits. The impact of algal growth on the characteristics of resulting gels was investigated through assessments of mechanical, rheological, electrical, and biological properties. Conductivity values of up to 4.9 +/- 0.2 mS cm(-1) were observed in living electrodes containing algae.
Soft and living electrodes offer new possibilities for addressing the biological-electrical interface beyond the use of traditional metal based bio-electrodes. Here, we present a living electrode material from green algae Chlorella vulgaris embedded within alginate hydrogel and cross-linked at different calcium chloride concentrations. Mechanical, rheological, electrical and biological properties of the living electrode materials were assessed to investigate the impact of algal growth on the characteristics of resulting gels. The electrical behaviour of the algae/alginate hydrogels was characterised using electrical impedance spectroscopy. Living electrodes containing algae exhibit conductivity values of up to 4.9 +/- 0.2 mS cm(-1). These conductivity values were sufficient to use these living hydrogels as electrode components in simple electrical circuits.
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