Fractal resistance in a transistor

Article Abstract:

The experiments of Taylor et al. have shown remarkable self-similarity or fractal-like patterns in the resistance of a small semiconductor device. The findings of their experiments have raised questions regarding the relationship of classical chaos theory with quantum mechanics. The Sinai billiard has been used as a model for classical chaotic motion and the device studied by Taylor et al. is similar to this billiard. The resistance fluctuations seen in the finest magnetic-field scale are approximately smaller than those seen in previous studies of quantum billiards.

Analysis, Fractals

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Chaos reduces species extinction by amplifying local population noise

Article Abstract:

Chaos in ecology and population level can actually enhance species survival, albeit sometimes at the cost of a local population, by reducing synchrony among populations. Some have argued that rarity is a necessary consequence of chaos, but this threatens only those species that consist of a single population. Chaos also enhances the stabilizing effects of migration and subdivision.

Models, Extinction (Biology), Chaos theory, Chaotic systems

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Amplifying quantum signals with the single-electron transistor

Article Abstract:

Single electron transistors are unlikely to replace field effect transistors in conventional electronics, but they are useful in ultra-low-noise analog applications.

Usage, Field-effect transistors, Field effect transistors

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