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Figure 1

From: High quality self-separated GaN crystal grown on a novel nanoporous template by HVPE

Figure 1

SEM images of the top view (a) and cross-section view (d) of MGA template. SEM images of the top view (b) and cross-section view (e) of the porous structure formed by the electrochemical etching. SEM images of the top view (c) and cross-section view (f) of the porous structure formed by the twice-etching. SEM images of the cross-section view of the GaN crystals grown on MGA template (g), ECMGA template (h) and TEMGA template (i), respectively.

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