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. 2022 Mar 10;12:3939. doi: 10.1038/s41598-022-07104-8

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RET condition and the microdroplet generated to demonstrate it. (a) Spectral overlap (shaded region) between the donor fluorescence (magenta) and acceptor absorption (solid blue lines), along with the pump absorption by the acceptor molecules (represented by the magenta circle). The spectrum in dotted blue lines represents the donor absorption spectrum. (b) Linear droplet array made by replacing the passive EG droplets with donor doped EG.