Characterization of a protein-based adhesive elastomer secreted by the Australian frog Notaden bennetti
When provoked, Notaden bennetti frogs secrete an exudate which rapidly forms a tacky elastic solid ("frog glue"). This protein-based material acts as a promiscuous pressure-sensitive adhesive that functions even in wet conditions. We conducted macroscopic tests in air to assess the tensile strength of moist glue (up to 78 ± 8 kPa) and the shear strength of dry glue (1.7 ± 0.3 MPa). We also performed nanomechanical measurements in water to determine the adhesion (1.9-7.2 nN or greater),...[Show more]
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