Pinch off of nanopipes under electron irradiation in GaN

  • Pailloux F
  • Colin J
  • Barbot J
 et al. 
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Long hollow nanopipes in epitaxial GaN thin films have been found to evolve under electron irradiation into the so-called bamboolike structure. The transition from the single nanopipe into a chain of pinholes is described in terms of morphological instability driven by the differences in the surface energy of crystallographic planes.

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