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Micro and Nano Systems Letters
Fig. 2 | Micro and Nano Systems Letters

Fig. 2

From: Beyond mass measurement for single microparticles via bimodal operation of microchannel resonators

Fig. 2

Open and closed loop operation of mechanical resonators. a Amplitude spectrum (left) and drive and measured resonance frequencies (right) during open loop operation. In this mode, amplitude change and phase shift are measured. b Amplitude spectrum (left) and drive and measured resonance frequencies (right) during closed loop operation. In this mode, frequency shift is measured

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