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Obtaining butterfly saliva. Black bar crossing the image is the needle used to extend the proboscis.
(a) Counter-clockwise rotation of nickel nanorod (d = 200 nm) at 1 Hz frequency. (b) Hysteresis of the membrane with electrodeposited nanorods. The solid line shows the magnetization curve of “as-prepared” sample and the dashed line shows the hysteresis loop. Insert shows the magnetization of the sample in the mT range of magnetic fields (enhanced online). [URL: http://dx.doi.org/10.1063/1.4788927.1]doi: 10.1063/1.4788927.1.
Comparison of the viscosity of butterfly saliva with that of sucrose solutions of different concentrations.
Viscosity (mean ± SD) of saliva of 3 species of butterflies and of 10%–40% (weight/weight) sucrose solutions.
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