Figure 2: Verification of the catalyst-dissolving and -releasing processes. | Nature Communications

Figure 2: Verification of the catalyst-dissolving and -releasing processes.

From: Growth of high-density horizontally aligned SWNT arrays using Trojan catalysts

Figure 2

(a) AFM images of substrate after spin-coating Fe(OH)3 alcohol solution. (b) AFM images of sapphire substrate with loaded catalysts after annealing in a meffle furnace. (c) AFM images of substrate after H2 treatment for 30 min. (d) The counts and average diameters of catalyst particles statistics in the areas (3μm × 3μm) after different treatment conditions: before and after annealing, H2 treatment for 5, 10 and 30 min, respectively. The error bars of counts were s.d. that were calculated from five time statistic results. (e) XPS depth analysis of the substrates after annealing and after SWNTs growth. Scale bar, 1μm.

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