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Nanoscale Research Letters
Figure 5 | Nanoscale Research Letters

Figure 5

From: Optimization, Yield Studies and Morphology of WO3Nano-Wires Synthesized by Laser Pyrolysis in C2H2and O2Ambients—Validation of a New Growth Mechanism

Figure 5

In situ TEM annealing of WO3micro-spheres in vacuum at 700–900 °C. Micrographs were taken periodically as shown in (a). Note the variation of spheres A, B and C and the enlargement of space around these spheres as time of annealing increases. The variation of sphere diameter with time for sphere B and C are plotted in (b). Exponential decay curves are fitted and show that the smaller sphere C shrinks faster than B

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