Shear viscosity of two-dimensional strongly coupled complex (dusty) plasmas

Shahzad, Aamir; Aslam, Arffa; Sultana, Mariam; He, Maogang

doi:10.1088/1757-899x/60/1/012014

Cited by 4 publications

(5 citation statements)

References 15 publications

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“…The G-K method is used to investigate the η xy using equation (8). This method was previously used to compute the shear viscosity for CDPs of 2D [39,40] and 3D [36] without an EEF. Recently the G-K method was also employed to compute the effect of magnetic field on shear viscosity corresponding to the phase transitions in CDPs [49] and ionic liquids [48].…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…We computed the effect of M xy on shear viscosity for Γ η min . The η xy is normalized as (η * xy = η xy /3mnω p a 2 ); this normalization is already used for 2D systems [39,40,46] and 3D systems [36]. Various simulations are performed in increasing and decreasing sequences to find the near-equilibrium strength of the M xy .…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…The G-K methods are usually used to compute the transport properties of CDPs, such as diffusion coefficients [21][22][23][50][51][52], shear viscosity [36][37][38][39][40] and thermal conductivity [24][25][26]. The coefficients of shear viscosity are investigated using the standard G-K method given as The V, k B and T are the volume, Boltzmann constant, and temperature, respectively.…”

Section: Shear Viscositymentioning

confidence: 99%

“…Such as Saigo and Hamaguchi [36], Salin and Caillol [37], and Daligault and Rasmussen [38] used equilibrium MD simulation with the G-K method to compute the coefficients of shear viscosity for 3D CDPs. As a trend, Shahzad and HE [39,40] used the equilibrium MD method to estimate the shear viscosity coefficients of 2D CDPs and their results are closed with experimental results. The G-K was used in the 2D CDPs experiment and computed the shear viscosity by Feng et al [41,42].…”

Section: Introductionmentioning

confidence: 99%

“…It also determines the wave's damping and structural properties. In the last few decades, the shear viscosity of CDPs has extensively been investigated using MD simulations, theoretical and experiments in the absence of EEF [36][37][38][39][40][41][42][43][44][45][46]. The equilibrium MD simulations with the standard Green-Kubo (G-K) method have extensively been used for three-dimensional (3D) and two-dimensional (2D) CDPs to evaluate the shear viscosity.…”

Section: Introductionmentioning

confidence: 99%

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Tuning the structure and transport properties of complex plasmas using electric field

Shakoori¹,

He²,

Shahzad³

et al. 2022

Phys. Scr.

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In this work, we explored the effects of uniaxial (Mz) and biaxial (Mxy) ac electric fields on the structure and transport properties of complex (dusty) plasmas (CDPs) using molecular dynamics simulations. Structures are analyzed using two diagnostic methods, one is lattice correlation function ψ() and the second is radial distribution function g(r) under the influence of Mz and Mxy, respectively. The Green-Kubo (G-K) method has been used to compute the shear viscosity (ηxy) in the Mxy ac electric field. The diffusive behavior of dust particles is investigated using G-K and Einstein methods in Mz. In the limits of the varying electric field, these properties of CDPs are accounted for an appropriate range of plasma Coulomb coupling (Γ) and constant Debye screening strength (κ = 0.50) parameters with different system sizes. The simulation outcomes of ψ() and g(r) indicate that the phase transition phenomena occur in CDPs with the variations of Mz, Mxy and Γ. The ηxy and diffusion coefficients significantly increase with increasing parallel electric fields. The subdiffusion motion for short-time behavior and superdiffusion motion for long-time behavior is observed in the presence of moderate to strong electric field strengths. It is revealed that the phase transition and changes in the transports properties of CDPs significantly depend on the strength of the external electric field and plasma parameter (Γ). Novel regimes are observed where CDPs quickly respond to the external electric field. Simulation results are outstanding in the combined effects of Yukawa and anisotropic wake potential on CDPs structural and transport properties. Simulation results demonstrate that the CDPs have electrorheological characteristics. Due to these unique properties, electrorheological CDPs may be used as a platform to study the electrorheological aspects of soft matter. There is a possibility that CDPs will be used as electrorheological material in the near future.

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