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. 2015 Jan 15;5:7818. doi: 10.1038/srep07818

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Measured and model data for g_D < 0. (a) Resonant frequency versus proportional gain. Different curves correspond to different differential gains; (b) Quality factor versus proportional gain. Different curves correspond to different differential gains: green: , black: , blue: and red: .

Inline graphic — Measured and model data for g_D < 0. (a) Resonant frequency versus proportional gain. Different curves correspond to different differential gains; (b) Quality factor versus proportional gain. Different curves correspond to different differential gains: green: , black: , blue: and red: .