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The Johnsen–Rahbek effect occurs when an electric potential is applied across the boundary between a metallic surface and the surface of a semiconducting material. Under these conditions an attractive force appears, whose magnitude depends on the voltage and the specific materials involved.

The effect is named after Danish engineers F. A. Johnsen and K. Rahbek, the first to investigate the effect at length.


External links

"Development of the Electrostatic Clutch", IBM Journal, January, 1957.
"Edison's Loud-Speaking Telephone"
A simple theory of the Johnsen-Rahbek effect R Atkinson 1969 J. Phys. D: Appl. Phys. 2 325-332

Physics Encyclopedia

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