Fig. 3: Characterization of the displacement of the tuning fork as a function of the driving voltage. | Nature Communications

Fig. 3: Characterization of the displacement of the tuning fork as a function of the driving voltage.

From: Ultrasensitive detection of local acoustic vibrations at room temperature by plasmon-enhanced single-molecule fluorescence

Fig. 3: Characterization of the displacement of the tuning fork as a function of the driving voltage.

a Bright-field image of the tuning fork prong in the absence of a driving voltage; Scale bar: 50 μm. b Bright-field image of the tuning fork prong when driven on resonance with a driving voltage of 15 V. Scale bar: 50 μm. c The cross-section perpendicular to the edge of the tuning fork prong. The displacement of the tuning fork is ∼16 pixels at a driving voltage of 15 V. d Displacement of the tuning fork as a function of the driving voltage at a resonant frequency of 32.717 kHz. The displacement is linearly proportional to the driving voltage. The red solid line is the linear fitting of the experimental data (solid scattered points) with a slope of ∼200 nm V−1.

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