Mechanical Properties of Silicon Nanowires

Sohn, Young Soo; Park, Jinsung; Yoon, Giwan; Song, Jiseok; Jee, Sang Won; Lee, Jung Ho; Na, Sungsoo; Kwon, Taeyun; Eom, Kilho

doi:10.1007/s11671-009-9467-7

Cited by 105 publications

(64 citation statements)

References 25 publications

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“…This means that at the micrometer scale the mechanical strength of the best silicon materials is comparable with the strength of wafers at the millimeter scale. This is consistent with the observation that size effects do not play a role on the elastic behaviour of silicon nanowires with a diameter >100 nm (Sohn et al, 2010). In recent years, several techniques such as the chemical vapor deposition (CVD) vapor liquid solid (VLS) or CVD-VLS method have been developed to grow nanowires with diameters down to the few nanometer range.…”

Section: Fracture Behaviour Of Silicon In Mesoscopic and Nanoscopic Ssupporting

confidence: 86%

Laser-based Determination of Decohesion and Fracture Strength of Interfaces and Solids by Nonlinear Stress Pulses

Hess¹

2010

Acoustic Waves

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Section: Fracture Behaviour Of Silicon In Mesoscopic and Nanoscopic Ssupporting

confidence: 86%

Laser-based Determination of Decohesion and Fracture Strength of Interfaces and Solids by Nonlinear Stress Pulses

Hess¹

2010

Acoustic Waves

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“…Furthermore, due to the multiscale, FEM-based nature of the SCB model, stiffening and softening at size scales (greater than 30 nm) that are much larger than what is tractable using full-scale atomistic simulations and comparable to what has been studied experimentally have been predicted using the SCB model. It is worth noting that all of while these trends have been observed experimentally [67,224,225,228,229], other experiments have not observed the same sizedependence in elastic properties [226,227,299].…”

Section: Surface Cauchy-born Model: Nanowire Resonatormentioning

confidence: 63%

Nanomechanical resonators and their applications in biological/chemical detection: Nanomechanics principles

et al. 2011

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Recent advances in nanotechnology have led to the development of nano-electro-mechanical systems (NEMS) such as nanomechanical resonators, which have recently received significant attention from the scientific community. This has not only been for their capability for the label-free detection of bio/chemical-molecules at single-molecule (or atomic) resolution for future applications such as the early diagnostics of diseases such as cancer, but also for their unprecedented ability to detect physical quantities such as molecular weight, elastic stiffness, surface stress, and surface elastic stiffness for adsorbed molecules on the surface. Most experimental works on resonator-based molecular detection have been based on the principle that molecular adsorption onto a resonator surface increases the effective mass, and consequently decreases the resonant frequencies of the nanomechanical resonator. However, this principle is insufficient to provide fundamental insights into resonator-based molecular detection at the nanoscale; this is due to recently proposed novel nanoscale detection principles including various effects such as surface effects, nonlinear oscillations, coupled resonance, and stiffness effects. Furthermore, these effects have only recently been incorporated into existing physical models for resonators, and therefore the universal physical principles governing nanoresonator-based detection have not been completely described. Therefore, our objective in this review is to overview the current attempts to understand the underlying mechanisms in nanoresonator-based detection using physical models coupled to computational simulations and/or experiments. Specifically, we will focus on issues of special relevance to the dynamic behavior of nanoresonators and their applications in biological/chemical detection: the resonance behavior of micro/nano-resonators; resonator-based chemical/biological detection; physical models of various nanoresonators such as nanowires, carbon nanotubes, and graphene. We pay particular attention to experimental and computational approaches that have been useful in elucidating the mechanisms underlying the dynamic behavior of resonators across multiple and disparate spatial/length scales, and the resulting insight into resonator-based detection that has been obtained. We additionally provide extensive discussion regarding potentially fruitful future research directions coupling experiments and simulations in order to develop a fundamental understanding of the basic physical principles that govern NEMS and NEMS-based sensing and detection applications.

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“…The existence of scale-dependent behavior has been confirmed by experimental measurements, including resonance frequency tests [6], tensile testing in scanning electron microscope (SEM) [7], transmission electron microscope (TEM) [8,9], atomic force microscope (AFM) [10,11] and nanoindenter [12] and also theoretical investigations, including ab initio and density functional theory (DFT) [13,14,15], molecular dynamics (MD) [16,17,18,19] and modifications to continuum theory [20,21,22,23]. Although scale-dependence has been observed by both theory and experiment, a considerable discrepancy still remains between the experiments and models.…”

Section: Scale-dependencementioning

confidence: 86%

Mechanics of Nanoelectromechanical Systems: Bridging the Gap Between Experiment and Theory

Sadeghian¹,

Keulen²,

Goosen³

2013

Advances in Micro/Nano Electromechanical Systems and Fabrication Technologies

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Mechanical Properties of Silicon Nanowires

Cited by 105 publications

References 25 publications

Laser-based Determination of Decohesion and Fracture Strength of Interfaces and Solids by Nonlinear Stress Pulses

Laser-based Determination of Decohesion and Fracture Strength of Interfaces and Solids by Nonlinear Stress Pulses

Nanomechanical resonators and their applications in biological/chemical detection: Nanomechanics principles

Mechanics of Nanoelectromechanical Systems: Bridging the Gap Between Experiment and Theory

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