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Figure 6 | Nanoscale Research Letters

Figure 6

From: Effects of Al interlayer coating and thermal treatment on electron emission characteristics of carbon nanotubes deposited by electrophoretic method

Figure 6

The FESEM images before and after the stability test. The morphologies of the CNT-B emitter, which were measured at the (a) initial (i.e., before the stability test) and (b) final (i.e., after 20-h emission) stages of electron emission. The CNT-D emitter's morphologies measured at the (c) initial and (d) final stages of electron emission.

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