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(a) Schematic illustration of the NELT process and a donor multilayer structure. (b) Ellipsometric measurement of the NPs film optical property.
Fluorescence pictures of (a) a donor substrate, (b) transferred patterns, and (c) a magnified micrograph of individual transferred pattern. SEM cross sectional picture of a donor substrate, (d) magnified view, and (e) near laser edge along line (i) in (a). (f) Fluorescence spectral intensity of a same sized square pattern [(A) original donor, (B) laser transferred, and (C) original donor after heating].
[(a)–(d)] Fluorescence pictures of transferred patterns by a step and pixelized transfer of a large sized homogenized beam and [(e)–(g)] by a raster scanning of a tightly focused Gaussian beam. [(a)(i), (a)(ii), and (b)] Star shapes made by a homemade mask. [(a)(iii), (c), and (d)] LTL letters made by squares. Small circles are the bubbles formed in PDMS layer and have nothing to do with the current process. Microdot arrays by (e) and (f) objective lens focusing. (g) square by raster scanning of focused laser with a objective lens. Arrow indicates the laser spot scanning direction.
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