Large-amplitude parametric response of fluid-conveying nanotubes due to flow pulsations

Farajpour, Ali; Ghayesh, Mergen H.; Farokhi, Hamed

doi:10.1007/s00542-019-04593-y

Cited by 6 publications

(1 citation statement)

References 61 publications

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“…However, the choice of MCST in this study is due to its concise integration of size‐dependency through a single parameter unlike other theories with multiple material constants that cannot be easily obtained experimentally. Some very recent applications of the theory can be found in References 62–65. Moreover, the effects of lateral inertia, rotary inertia and shear deformation are included in the dynamics model of the micropillar via the combined use of the Rayleigh–Love and Timoshenko beam theories.…”

Section: Introductionmentioning

confidence: 99%

Modeling and analysis of nature‐inspired branched micropillars for enhanced dynamic bio‐sensing

Mustapha

Hawwa

Abakr

2021

Numer Methods Biomed Eng

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Research evidence abounds on the effectiveness of micropillar‐based microelectromechanical systems for the detection of a wide variety of ultrasmall biological objects for clinical and non‐clinical applications. However, the standard micropillar‐based sensing platforms rely on a single‐column micropillar with a spot at the tip for binding of objects. Although this long‐standing form has shown immense potential, performance improvement is hindered by the fundamental limits enforced by physical laws. Moreover, the single‐column micropillar has a lower sensing area and is ill‐suited for a simultaneous differential sensing of chemical/biological objects of different mass. Here, we report a new set of nature‐inspired, branched micropillar‐based sensing resonators to address the highlighted issues. The characteristics of the newly proposed branched micropillars are comprehensively examined with three payloads (Bartonella Bacilliformis, Escherichia coli, and Micro magnetic beads). Anchored on the capability of continuum theoretical framework, the mathematical model of the micropillar is formulated through the synthesis of the modified couple stress, the Rayleigh‐Love, and the Timoshenko theories. The finite element method is employed to shed light on the variability of the structures' resonant response under performance reduction factors (payload's rotary inertia, damaged substrate, and density of a surrounding fluid). The results obtained indicate superior performance indicators for the triply‐branched micropillar: enhanced response sensitivity for multiple payloads and less susceptibility to deterioration in resonant frequencies due to fluid immersion.

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Section: Introductionmentioning

confidence: 99%

Modeling and analysis of nature‐inspired branched micropillars for enhanced dynamic bio‐sensing

Mustapha

Hawwa

Abakr

2021

Numer Methods Biomed Eng

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Natural vibration of pipes conveying high-velocity fluids with multiple distributed retaining clips

Deng,

Ding,

Mao

et al. 2023

Nonlinear Dyn

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Effect of flow pulsations on chaos in nanotubes using nonlocal strain gradient theory

Ghayesh

Farajpour

Farokhi

2020

Communications in Nonlinear Science and Numerical Simulation

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In this article, a chaos analysis is performed for the viscoelastic nonlinear coupled dynamics of perfectly straight nanotubes conveying pulsatile fluid for the first time. A size-dependent advanced elasticity model is developed with consideration of stress nonlocality as well as the gradient of strain components. After presenting the nonlinear motion equations using Hamilton's approach, they are numerically solved via application of a time-integration technique for a system with a large number of degrees of freedom. Chaos analysis is performed for the nanotube at both subcritical and supercritical flow regimes. Both mean fluid velocity and the amplitude of velocity pulsation are varied as the bifurcation parameter. The proposed size-dependent continuum modelling and numerical results would be useful in order to tailor the system parameters to avoid chaos in nanoelectromechanical devices using fluid-conveying nanotubes.

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Large-amplitude parametric response of fluid-conveying nanotubes due to flow pulsations

Cited by 6 publications

References 61 publications

Modeling and analysis of nature‐inspired branched micropillars for enhanced dynamic bio‐sensing

Modeling and analysis of nature‐inspired branched micropillars for enhanced dynamic bio‐sensing

Natural vibration of pipes conveying high-velocity fluids with multiple distributed retaining clips

Effect of flow pulsations on chaos in nanotubes using nonlocal strain gradient theory

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