Silicon Funnels (IMAGE)

Helmholtz-Zentrum Berlin für Materialien und Energie

Silicon Funnels

Caption

The scanning electron microscopies (SEM) show how regularly the funnels etched in a silicon substrate are arranged (left: the line segment = 5 microns; right: 1 micron). The funnels measure about 800 nanometers in diameter above and run down to about a hundred nanometers at the tip.

Credit

S. Schmitt / MPL

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