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Fiber-Optic Fabry–Pérot Acoustic Sensor With …

Abstract: A fiber-optic Fabry-Pérot acoustic sensor with a ~100-nm-thick multilayer graphene diaphragm is reported. Acoustic testing demonstrates a pressure-induced deflection of 1100 nm/kPa and a noise equivalent acoustic signal level of ~ 60 μPa/Hz 1/2 at the frequency of 10 kHz. The sensor exhibits a flat frequency response from 0.2 to 22 kHz and may be useful for highly sensitive ...

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A New Model for Multilayer Graphene | The …

Graphene, a two-dimensional form of carbon, has generated a great deal of excitement since its discovery. ... that works for multilayer graphene structures. The potential, called “hNN-Gr x ” is a hybrid including a neural network for short-range interactions and a physics-based potential for long-range ones. It can be used for any number of ...

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Cross-Linking-Induced Frictional Behavior of …

The tribological properties of graphene have attracted intensive attentions over the past few years. It was found that the frictional behavior of multilayer graphene was dependent on the multilayer thickness. However, the origin for such phenomenon is still under discussion. In this study, the mechanism of the thickness-dependent friction was explored based on molecular dynamics simulations of ...

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Cross-Linking-Induced Frictional Behavior of …

The tribological properties of graphene have attracted intensive attentions over the past few years. It was found that the frictional behavior of multilayer graphene was dependent on the multilayer thickness. However, the origin for such phenomenon is still under discussion. In this study, the mechanism of the thickness-dependent friction was explored based on molecular dynamics simulations of ...

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(PDF) Optical transmittance of multilayer graphene

We study the optical transmittance of multilayer graphene films up to 65 layers thick. By combing large-scale tight-binding simulation and optical measurement on CVD multilayer graphene, the ...

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Graphene Powders - Monolayer, Multilayer & …

Today, graphene is still proving to be one of the most exciting materials around. Since the start of 2018, there have already been 27,000 publications on graphene worldwide. Ossila provides several forms of graphene powder - including monolayer flakes, multilayer flakes, and nanoplatelets.

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Dynamic mechanical behavior of multilayer graphene …

Multilayer graphene is an exceptional anisotropic material due to its layered structure composed of two-dimensional carbon lattices. Although the intrinsic mechanical properties of graphene have been investigated at quasi-static conditions, its behavior under extreme dynamic conditions has not yet been studied. We report the high–strain-rate behavior of multilayer graphene over a range of ...

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Multilayer Graphene (10 mm x 10 mm) – Graphenea

Multilayer Graphene on SiO₂/Si, Quartz or PET (non AB Bernal stacking) - Processed in Clean Room Class 1000 The bilayer and trilayer graphene product consists of CVD layers produced by multiple transfer on a SiO2/Si, Quartz or PET substrate. Lower sheet resistance values can be obtained when compared to monolayer sampl

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Graphene Powders - Monolayer, Multilayer & …

Today, graphene is still proving to be one of the most exciting materials around. Since the start of 2018, there have already been 27,000 publications on graphene worldwide. Ossila provides several forms of graphene powder - including monolayer flakes, multilayer flakes, and nanoplatelets.

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Three-Dimensional Vertically Aligned Functionalized ...

Functionalized multilayer graphene sheets were prepared in a moderate oxidation environment (mixed sulfuric and nitric acid) with aid of sonication. The thickness of the functionalized multilayer graphene sheets was in the range of between 2 nm and 10 nm, with an average thickness of 7.35 nm.

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Phonon-interface scattering in multilayer graphene on …

The thermal conductivity of suspended graphene can be even higher than the basal-plane value of graphite, which is among the highest found in solids. However, when graphene is in contact with an amorphous material, the thermal conductivity is suppressed considerably. This paper reports that the thickness of multilayer graphene supported on an amorphous substrate needs to be more than 30 …

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OSA | Tunable multilayer-graphene-based broadband ...

2020-12-25 · We propose a tunable multilayer-graphene-based broadband metamaterial selective absorber using the finite-difference time domain. The simulation results reveal that the absorption spectra of the proposed metamaterial with the nano-cylinder and 30-layer graphene show high absorption (88.3%) in the range of 250–2300 nm, which covers the entire solar spectrum.