Mechanical Properties of Silicon Nanowires.

Nanoscale Research Letters (Impact Factor: 2.52). 01/2009; 5(1):211-216. DOI: 10.1007/s11671-009-9467-7
Source: PubMed

ABSTRACT Nanowires have been taken much attention as a nanoscale building block, which can perform the excellent mechanical function as an electromechanical device. Here, we have performed atomic force microscope (AFM)-based nanoindentation experiments of silicon nanowires in order to investigate the mechanical properties of silicon nanowires. It is shown that stiffness of nanowires is well described by Hertz theory and that elastic modulus of silicon nanowires with various diameters from ~100 to ~600 nm is close to that of bulk silicon. This implies that the elastic modulus of silicon nanowires is independent of their diameters if the diameter is larger than 100 nm. This supports that finite size effect (due to surface effect) does not play a role on elastic behavior of silicon nanowires with diameter of >100 nm.

1 Bookmark
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Nanomechanical properties of indium nanowires like structures fabricated on quartz substrate by trench template technique, measured using nanoindentation. The hardness and elastic modulus of wires were measured and compared with the values of indium thin film. Displacement burst observed while indenting the nanowire. 'Wire-only hardness' obtained using Korsunsky model from composite hardness. Nanowires have exhibited almost same modulus as indium thin film but considerable changes were observed in hardness value.
    Nanoscale Research Letters 01/2010; 5(7):1085-92. · 2.52 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The field of silicon nanowires (SiNWs) and silicon-based 1D nanostructured heterostructures represent one of the most important research subjects within the nanomaterials family. A series of synthesis approaches of SiNWs and silicon-based 1D nanostructured heterostructures have been developed, and have garnered the greatest attention in the past decades for a variety of applications. This article provides an overview on recent research on the synthesis, properties and applications of SiNWs, silicon nanotubes (SiNTs) and complex silicon-based 1D nanostructures.
    Critical Reviews in Solid State and Materials Sciences. 07/2011; 36(3):148-173.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: We have characterized the mechanical behavior of aligned carbon nanotube (CNT) arrays that serve as foam-like energy absorbing materials, by using atomic force microscope indentation. It is shown that the mechanical properties (e.g. elastic modulus, adhesion force, and energy dissipation) of aligned CNT arrays are dependent on the length of CNTs as well as chemical environment that surrounds CNT arrays. More remarkably, it is found that CNT array made of CNTs with their length of 10 μm exhibits the excellent damping property (i.e. energy dissipation) higher than that of a conventional composite such as Kevlar. It is also shown that the energy dissipation of CNT arrays during loading–unloading process can be reduced by the solution surrounding CNT array, and that the decrease of energy dissipation for CNT array due to solution depends on the solution type, which mediates the interaction between individual nanotubes. Our study sheds light on the design principles for CNT array-based foam-like materials.
    Carbon 12/2013; 65:305-314. · 6.16 Impact Factor

Full-text (2 Sources)

Available from
May 20, 2014