Fig. 1 (IMAGE)

Osaka University

Fig. 1

Caption

(a) Schematic of the measurement system developed in this study. By using this technology, extraction and ionization of picoliter volumes can be performed without disruptions caused by surface roughness. In addition, one can measure the height of the sample from the change in vibration amplitude. (b) Relationship between the length of the capillary probe and the resonance frequency of the probe. (c) Correlation between the input voltage to the piezoelectric actuator used to vibrate the probe and the probe vibration amplitude. (d) Correlation between the height of the sample and the feedback control signal.

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Reproduced with permission. Copyright (2021) American Chemical Society. https://pubs.acs.org/doi/abs/10.1021/acs.analchem.0c04144

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