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Confocal Raman microscopic color-coded images of TE-loaded fiber mats from (a–d) F3 (e), and (f) F2, Color code: Red: TE, Blue: PL90H, Green: PVA, Yellow: Sunflower oil; stack order of color code left column: green, yellow, blue, red; stack order of color code right column: green, red, blue, yellow.
