SEM Image of the Opal's Surface (IMAGE)

Optica

SEM Image of the Opal's Surface

Caption

This is a closeup of the surface of the opal, taken with a scanning electron microscope. The ethanol-responsive gel used in the device would fill the spaces between the rows of regularly spaced nanoparticles that comprise the opal.

Credit

Riccardo Pernice, Università degli Studi di Palermo

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