. Typically, reflectins clump together and form the nanoparticles, so light isn't absorbed or directly transmitted; instead, the light scatters or bounces off of them, making the leucophores appear bright white.to stably, instead of temporarily, form reflectin nanostructures for which we could better control the scattering of light," says Gorodetsky. That's because if cells allow light through with little scattering, they'll seem more transparent.
In experiments, the team added salt to the cells' culture media and observed the reflectin proteins clumping together into nanostructures. By systematically increasing the salt concentration, Bogdanov got detailed, time-lapse 3D images of the nanostructures' properties. As the nanoparticles became larger, the amount of light that bounced off the cells increased, consequently tuning their opacity.
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