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. 2021 May 25;12:3089. doi: 10.1038/s41467-021-23407-2

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© The Author(s) 2021

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Fig. 2 — a UV printed square areas with increasing irradiation time (0-150 µs/pixel) exhibit increased SRS intensity (at 2194 cm⁻¹) and shifted spectra as shown in (b). c UV beam written letter “M” across the border of DTE-Ph and DTE-TMS coated areas allows dual-color SRS imaging of the two sub-portions of the letter (d) with varying SRS spectra along the line-cuts in the DTE-Ph (e) and DTE-TMS (f) regions. Scale bars: 10 µm in (a) and 20 µm in (d).