Figure 4: DPN patterning of β-phase stripes using low-boiling point solvents. | Nature Communications

Figure 4: DPN patterning of β-phase stripes using low-boiling point solvents.

From: Dip-pen patterning of poly(9,9-dioctylfluorene) chain-conformation-based nano-photonic elements

Figure 4

(a) Confocal PL image of a β-phase stripe element, DPN patterned at 0.1 μm s−1 writing speed using a low-boiling point cyclohexane/IPA 3:1 (vol/vol) mixture ink. The image was recorded with PL filtered at 440 nm. (b) Peak-normalized PL intensity cross-section, IPL (black circles), obtained by taking a slice through the centre of the line in the digitized image. The convolution of a Gaussian ‘true’ β-phase profile (solid red line; FWHM=400 nm) with the PSF (not shown; FWHM=340 nm) produces an ‘observed’ PL intensity profile (dashed red line) that fits the experimental data.

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