Light at the end of the channel

Article Abstract:

Miniaturized circuits that use light to carry digital information are faster than conventional electronic circuits. But to create miniature photonic circuits, surface plasmons have to be confined to the direction perpendicular to the interface and in the plane of the interface, so that they can propagate efficiently through narrow metal strips, but this is problematic and hence, channel plasmon-polariton (CPP) modes, which are laterally confined and suffer only low propagation loss, are used to mould the flow of light.

Spectra, Plasmons (Physics), Polaritons

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Tightrope act

Article Abstract:

A component of the 'tip link' that conveys tension to mechanically sensitive ion channels in the inner ear has been identified. The way in which Nicolson and colleagues and Muller and co-workers identified a major constituent of the 'tip link' is discussed.

United States, Labyrinth (Ear)

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Life's transistors

Article Abstract:

Voltage-gated ion channels control electricity activity in nerve, muscle and many other cell types. The crystal structure of a bacterial voltage-gated channel has revealed the astonishingly simple design of its voltage sensor.

Control, Crystal structure

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