In this work morphological studies and electromechanical characterisation of fish scales from grass carp (Ctenopharyngodon idellus) revealed how green carp are sensitive to their surroundings and show how fish scales – natural polymers – can be used as highly sensitive piezoelectric materials in high-sensitive and high-speed devices with great implications for biomedical applications. The scales were analysed – among other techniques – with the TESCAN SEM VEGA3 LMH equipped with an energy dispersive X-ray analyser.
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- SEM images of the four domains. (a) Magnified image of a typical ridge (I) region. (b) Magnified image of a trough (II) region. (c) Magnified image of a crescent (III). (d) Magnified image of the base (IV) belonging to the rough region.