Fig. 5: The characterizations of SAO@H3PO4-loaded MNs patch before and after injection.
From: Delivery of luminescent particles to plants for information encoding and storage

a Digital photograph of leaf before and after the injection of SAO@H3PO4-loaded MNs patch under white light and 365 nm UV lamp, respectively; SEM images of SAO@H3PO4-loaded MNs patch before (b) and after (c) injection; Fluorescence (d) and phosphorescence (e) spectra of SAO@H3PO4-loaded MNs patch and leaf with SAO@H3PO4 label. f Phosphorescent decay curves of SAO (red line), SAO@H3PO4 (blue line), SAO@H3PO4-loaded MNs patch (green line) and leaf with SAO@H3PO4 label (orange line)