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Efficient parametric amplification in a nano-electro- mechanical device

Parametric amplification is an extremely useful scheme applied in optics, electronics and also mechanics. In mechanics it occurs when a mechanical parameter of the oscillator (such as its spring constant) is modulated at twice the resonance frequency of the oscillator mode studied. We have recently achieved this type of amplification with an extremely small device, a silicon nano-electro-mechanical system (a nemS). Full text

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