Molecular dynamics simulation study on graphene-nanoribbon-resonators tuned by adjusting axial strain

Kwon, Oh Kuen; Lee, Jun Ha; Park, Jung Chul; Kim, Ki-Sub; Kang, Jeong Won

doi:10.1016/j.cap.2012.08.009

Cited by 22 publications

(10 citation statements)

References 58 publications

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“…ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT 6 The discretized forms of Eq. (7) can then be expressed as [32] …”

Section: Discrete Singular Convolution (Dsc)mentioning

confidence: 99%

“…Nano or micron scaled plates and graphene of arbitrary shapes have been widely used in modern industries such as biomedical devices, nano electro mechanical applications, biochemical purpose, mechanical actuators and nano sensors [1][2][3][4][5][6][7]. Nano scaled structures such as beams and plates have been also widely used in micro-electro mechanical systems (MEMS) for high frequency and high sensitive purposes due to their ultra mechanical, thermal and electrical properties.…”

Section: Introductionmentioning

confidence: 99%

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Static and dynamic response of sector-shaped graphene sheets

Akgöz

Cívalek

2015

Mechanics of Advanced Materials and Structures

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Nonlocal elasticity theory is presented for the free vibration and bending analysis of nano scaled graphene sheets having sector shape. An eight-node curvilinear domain is used for transformation of the governing equation of motion of sector graphene from physical region to computational region in conjunctions with the Kirchhoff plate theory. The discrete singular convolution (DSC) method is employed for numerical solution of resulting nonlocal governing differential equation and related boundary conditions. Then, the effects of nonlocal parameter, mode numbers, sector angle and radius ratio on the static and vibration results of nano-scaled sector shaped graphene sheets are discussed.

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“…ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT 6 The discretized forms of Eq. (7) can then be expressed as [32] …”

Section: Discrete Singular Convolution (Dsc)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Static and dynamic response of sector-shaped graphene sheets

Akgöz

Cívalek

2015

Mechanics of Advanced Materials and Structures

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“…In addition, Oshidari et al reported a graphene resonator by attaching SU-8 proof mass onto graphene, and studied the effect of temperature on the resonance frequency and quality factor variations of the resonator [13]. Recently, Kown et al further investigated the mechanical response of graphene harmonic oscillator under nano-indentation by molecular dynamics method, which indicates that the resonance behaviors of graphene resonator can be tuned by nano-pressure and initial displacement [14,15]. Although currently, graphene mechanical resonators mainly adopt electrical excitation to actuate the sensitive elements [11,12,13,14,15,16], this type of excitation mode is generally limited to high measurement accuracy and better repeatability.…”

Section: Introductionmentioning

confidence: 99%

Opto-thermally Excited Fabry-Perot Resonance Frequency Behaviors of Clamped Circular Graphene Membrane

Shi

Fan

et al. 2019

Nanomaterials

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An opto-thermally excited optical fiber Fabry-Perot (F-P) resonant probe with suspended clamped circular graphene diaphragm is presented in this paper. Then, the dependence of resonance frequency behaviors of graphene diaphragm upon opto-mechanical factors including membrane properties, laser excitation parameters and film boundary conditions are investigated via COMSOL Multiphysics simulation. The results show that the radius and thickness of membrane will linearly affect the optical fiber light-induced temperature distribution, thus resulting in rapidly decreasing resonance frequency changes with the radius-to-thickness ratio. Moreover, the prestress can be regulated in the range of 108 Pa to 109 Pa by altering the environmental temperature with a scale factor of 14.2 MPa/K. It is important to note that the availability of F-P resonant probe with a defective clamped circular graphene membrane can be improved notably by fabricating the defected circular membrane to a double-end clamped beam, which gives a broader perspective to characterize the resonance performance of opto-thermally excited F-P resonators.

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“…Recently, Kown et al used molecular dynamics method to analyze the mechanical response of graphene harmonic oscillator under nano-indentation. The simulation showed that the graphene resonator could be tuned by nano-pressure and initial displacement to a large extent [ 15 , 16 ]. Additionally, regarding the advantages of optical fiber measurement, Li et al developed a fiber-tip Fabry–Perot resonator with multi-layer graphene diaphragm and analyzed the effect of structural parameters on the resonant characteristics [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of a Novel Ultrasensitive Differential Resonant Graphene Micro-Accelerometer with Wide Measurement Range

Shi

Fan

et al. 2018

Sensors

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A novel, ultrahigh-sensitivity wide-range resonant micro-accelerometer using two differential double-clamped monolayer graphene beams is designed and investigated by steady-state simulation via COMSOL Multiphysics software in this paper. Along with stiffness-enhanced optimized folded support beams, two symmetrical 3-GPa prestressed graphene nano-beams serve as resonant sensitive elements with a size of 10 μm × 1 μm (length × width) to increase the acceleration sensitivity while extending the measurement range. The simulation results show that the accelerometer with cascade-connected graphene and proof-mass assembly exhibits the ultrahigh sensitivity of 21,224 Hz/g and quality factor of 9773 in the range of 0–1000 g. This is remarkably superior to previously reported studies characterized by attaching proof mass to the graphene components directly. The proposed accelerometer shows great potential as an alternative to quartz and silicon-based resonant sensors in high-impact and highly sensitive inertial measurement applications.

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Molecular dynamics simulation study on graphene-nanoribbon-resonators tuned by adjusting axial strain

Cited by 22 publications

References 58 publications

Static and dynamic response of sector-shaped graphene sheets

Static and dynamic response of sector-shaped graphene sheets

Opto-thermally Excited Fabry-Perot Resonance Frequency Behaviors of Clamped Circular Graphene Membrane

Modeling and Analysis of a Novel Ultrasensitive Differential Resonant Graphene Micro-Accelerometer with Wide Measurement Range

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