This HTML5 document contains 31 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

Namespace Prefixes

PrefixIRI
dctermshttp://purl.org/dc/terms/
dbohttp://dbpedia.org/ontology/
foafhttp://xmlns.com/foaf/0.1/
n11https://global.dbpedia.org/id/
dbthttp://dbpedia.org/resource/Template:
rdfshttp://www.w3.org/2000/01/rdf-schema#
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
owlhttp://www.w3.org/2002/07/owl#
wikipedia-enhttp://en.wikipedia.org/wiki/
dbphttp://dbpedia.org/property/
dbchttp://dbpedia.org/resource/Category:
provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
wikidatahttp://www.wikidata.org/entity/
dbrhttp://dbpedia.org/resource/

Statements

Subject Item
dbr:Graphite-like_ZnO_nanostructures
dbo:wikiPageWikiLink
dbr:Graphite-like_zinc_oxide_nanostructure
dbo:wikiPageRedirects
dbr:Graphite-like_zinc_oxide_nanostructure
Subject Item
dbr:Graphite-like_zinc_oxide_nanostructure
rdfs:label
Graphite-like zinc oxide nanostructure
rdfs:comment
Most of the synthesized Zinc oxide (ZnO) nanostructures in different geometric configurations such as nanowires, nanorods, and nanosheets are usually in the wurtzite crystal structure. However, it was found from density functional theory calculations that for ultra-thin films of ZnO, the graphite-like structure was energetically more favourable as compared to the wurtzite structure. The stability of this phase transformation of wurtzite lattice to graphite-like structure of the ZnO film is only limited to the thickness of about several Zn-O layers and was subsequently verified by experiment. Similar phase transition was also observed in ZnO nanowire when it was subjected to uniaxial tensile loading. However, with the use of the first-principles all electron full-potential method, it was o
dcterms:subject
dbc:II-VI_semiconductors dbc:Crystallographic_defects dbc:Phase_transitions dbc:Nanomaterials
dbo:wikiPageID
39586666
dbo:wikiPageRevisionID
1119093928
dbo:wikiPageWikiLink
dbr:Nanobelt dbc:Crystallographic_defects dbr:Zinc dbc:Nanomaterials dbc:II-VI_semiconductors dbr:Wurtzite_crystal_structure dbr:Nanorod dbr:Nanosheet dbc:Phase_transitions dbr:Nanowire dbr:Density_functional_theory
owl:sameAs
wikidata:Q17018862 n11:fner
dbp:wikiPageUsesTemplate
dbt:Orphan dbt:Nano-tech-stub dbt:Reflist
dbo:abstract
Most of the synthesized Zinc oxide (ZnO) nanostructures in different geometric configurations such as nanowires, nanorods, and nanosheets are usually in the wurtzite crystal structure. However, it was found from density functional theory calculations that for ultra-thin films of ZnO, the graphite-like structure was energetically more favourable as compared to the wurtzite structure. The stability of this phase transformation of wurtzite lattice to graphite-like structure of the ZnO film is only limited to the thickness of about several Zn-O layers and was subsequently verified by experiment. Similar phase transition was also observed in ZnO nanowire when it was subjected to uniaxial tensile loading. However, with the use of the first-principles all electron full-potential method, it was observed that the wurtzite to graphite-like phase transformation for ultra-thin ZnO films will not occur in the presence of a significant amount of oxygen vacancies (Vo) at the Zn-terminated (0001) surface of the thin film. The absence of the structural phase transformation was explained in terms of the Coulomb attraction at the surfaces. The graphitic ZnO thin films are structurally similar to the multilayer of graphite and are expected to have interesting mechanical and electronic properties for potential nanoscale applications. In addition, density functional theory calculations and experimental observations also indicate that the concentration of the Vo is the highest near the surfaces as compared to the inner parts of the nanostructures. This is due to the lower Vo defect formation energies in the interior of the nanostructures as compared to their surfaces.
prov:wasDerivedFrom
wikipedia-en:Graphite-like_zinc_oxide_nanostructure?oldid=1119093928&ns=0
dbo:wikiPageLength
4692
foaf:isPrimaryTopicOf
wikipedia-en:Graphite-like_zinc_oxide_nanostructure
Subject Item
wikipedia-en:Graphite-like_zinc_oxide_nanostructure
foaf:primaryTopic
dbr:Graphite-like_zinc_oxide_nanostructure