Details

Autor(en) / Beteiligte

• Stan, G.
• Krylyuk, S.
• Davydov, A. V.
• Vaudin, M.
• Bendersky, L. A.
• Cook, R. F.

Titel

Surface effects on the elastic modulus of Te nanowires

Ist Teil von

• Applied physics letters, 2008-06, Vol.92 (24), p.241908-241908-3

Ort / Verlag

American Institute of Physics

Erscheinungsjahr

2008

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Nondestructive elastic property measurements have been performed on Te nanowires with diameters in the range 20 - 150 nm . By using contact resonance atomic force microscopy, the elastic indentation modulus perpendicular to the prismatic facets of the nanowires has been accurately quantified. In this diameter range, a pronounced size dependence of the modulus has been observed: an invariant value consistent with Te bulk properties for large wire diameters, followed by a nonlinear increase with decreasing diameter, and finally an almost doubling of the modulus for Te nanowires thinner than 30 nm . A model based on surface stiffening describes the observations.