Fig. 2: Observation of the capillary probe packed with silica particles. | Communications Chemistry

Fig. 2: Observation of the capillary probe packed with silica particles.

From: Single-cell mass spectrometry imaging of lipids in HeLa cells via tapping-mode scanning probe electrospray ionization

Fig. 2

a Low-magnification image of the capillary probe. The arrowed line indicates the region in which the silica particles were packed inside the capillary probe. b High-magnification image of the capillary probe. The arrows indicate the positions of the silica particles inside the capillary probe. c View of solvent flow through the probe. When methanol was flowed inside the probe, it flowed out from the probe end and accumulated on the side of the probe (arrows in the figure).

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