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Unprecedented New Crystalline Forms of SnSe in Narrow to Medium Diameter Carbon Nanotubes.
Slade, Charlotte A; Sanchez, Ana M; Sloan, Jeremy.
Afiliación
  • Slade CA; Department of Physics , University of Warwick , Coventry CV4 7AL , United Kingdom.
  • Sanchez AM; Department of Physics , University of Warwick , Coventry CV4 7AL , United Kingdom.
  • Sloan J; Department of Physics , University of Warwick , Coventry CV4 7AL , United Kingdom.
Nano Lett ; 19(5): 2979-2984, 2019 05 08.
Article en En | MEDLINE | ID: mdl-30973739
We report the observation of four unprecedented new crystalline forms of SnSe, obtained as a result of encapsulation in narrow to medium diameter single-walled carbon nanotubes. Aberration-corrected scanning transmission electron microscopy at 80 kV revealed linear, zigzag, helical (i.e., 2 × 1) atomic chains and a new form of encapsulated SnSe. This new form is apparently isostructural to free-standing MoS, MoSe, and WSe extreme nanowires etched from the corresponding monolayer dichalcogenides and also recently observed encapsulated MoTe. A structural model has been attained from annular dark-field (ADF) images. The experimental imaging agrees well with image simulations produced from models anticipated for the new structural forms.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2019 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2019 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos