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Growth and Field Emission of Hierarchical Single‐Crystalline Wurtzite AlN Nanoarchitectures
Author(s) -
Yin L.W.,
Bando Y.,
Zhu Y.C.,
Li M.S.,
Li Y.B.,
Golberg D.
Publication year - 2005
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200400504
Subject(s) - materials science , wurtzite crystal structure , field electron emission , nanotechnology , field (mathematics) , engineering physics , metallurgy , zinc , physics , quantum mechanics , engineering , electron , mathematics , pure mathematics
Hierarchical single‐crystalline AlN nanocombs were self‐assembled through a chemical‐vapor transport and condensation process. The wurtzite AlN nanoarchitectures are composed of core stems along the <0001> direction and comb‐like nanotips growing perpendicularly out from both sides of the stems along the <0110> direction (see Figure). Low‐threshold field emission could be obtained from the nanostructures, with potential applications in field‐emission displays and microvacuum tubes for microwave amplifiers.