Structural, optical and nanomechanical properties of (1 1 1) oriented nanocrystalline ZnTe thin films

Kiran, M. S. R. N.; Kshirsagar, Sachin D.; Krishna, M. Ghanashyam; Tewari, Surya P.

doi:10.1051/epjap/2010071

Cited by 9 publications

(2 citation statements)

References 45 publications

(42 reference statements)

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“…The elastic modulus of the ZnTe NW does not seem to change with diameter in the 40-250 nm range investigated here, and it is approximately 63.0 AE 6.0 GPa, slightly lower than 70 GPa reported for [111] oriented nanocrystalline ZnTe thin films. 18 The modulus of bulk ZnTe in the [111] direction (growth direction of ZnTe NWs) can be extracted for comparison as follows. Yamada et al 19 obtained the elastic constants of ZnTe…”

Section: Resultsmentioning

confidence: 99%

A computational and experimental investigation of the mechanical properties of single ZnTe nanowires

et al. 2012

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One-dimensional nanostructures such as ZnTe, CdTe, Bi(2)Te(3) and others have attracted much attention in recent years for their potential in thermoelectric devices among other applications. A better understanding of their mechanical properties is important for the design of devices. A combined experimental and computational approach has been used here to investigate the size effects on the Young's modulus of ZnTe nanowires (NWs). The mechanical properties of individual ZnTe nanowires in a wide diameter range (50-230 nm) were experimentally measured inside a high resolution transmission electron microscope using an atomic force microscope probe with the ability to record in situ continuous force-displacement curves. The in situ observations showed that ZnTe NWs are flexible nanostructures with the ability to withstand relatively high buckling forces without becoming fractured. The Young's modulus is found to be independent of nanowire diameter in the investigated range, in contrast to reported results for ZnO NWs and carbon nanotubes where the modulus increases with a decrease in diameter. Molecular dynamics simulations performed for nanowires with diameters less than 20 nm show limited size dependence for diameters smaller than 5 nm. The surface atoms present lower Young's modulus according to the simulations and the limited size dependency of the cylindrical ZnTe NWs is attributed to the short range covalent interactions.

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Section: Resultsmentioning

confidence: 99%

A computational and experimental investigation of the mechanical properties of single ZnTe nanowires

et al. 2012

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“…Their optical properties are substantially different, signifying the possibility of applications in different frequencies regimes of the THz region [Kiran et al, 2010;Kshirsagar et al, 2011].…”

Section: Znte Coatings For Thz Applicationsmentioning

confidence: 99%