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相关论文: On the nature of screening in charge regulated mac…

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Precisely controlling the surface charge of zwitterionic macromolecules is crucial for tailoring their properties and optimizing them for specific applications. Here, we present a generalized calculation scheme for determining the screening…

软凝聚态物质 · 物理学 2025-06-24 Rashmi Kandari , Rudolf Podgornik , Sunita Kumari

By using the recently formulated Legendre transform approach to the thermodynamics of charged systems, we explore the general form of the screening length in the Voorn-Overbeek type theories, that remains valid also in the cases where the…

化学物理 · 物理学 2024-06-19 Sunita Kumari , Shikha Dwivedi , Rudolf Podgornik

We present several aspects of the screening of charged macromolecules in an electrolyte. After a review of the basic mean field approach, based on the linear Debye-Huckel theory, we consider the case of highly charged macromolecules, where…

软凝聚态物质 · 物理学 2012-04-27 Gabriel Tellez

We have used density functional theory to study the nonlinear screening properties of a two-dimensional (2D) electron gas. In particular, we consider the screening of an external static point charge of magnitude Z as a function of the…

介观与纳米尺度物理 · 物理学 2009-11-10 E. Zaremba , I. Nagy , P. M. Echenique

The screening of a test charge by partially degenerate non-ideal free electrons at conditions related to warm dense matter and dense plasmas is investigated using linear response theory and the local field correction based on ab inito…

等离子体物理 · 物理学 2021-03-09 Zhandos Moldabekov , Tobias Dornheim , Michael Bonitz

The screening problem for the Coulomb potential of a charge located in a two-dimensional (2D) system has an intriguing solution with a power law distance screening factor due to out-of-plane electrical fields. This is crucially different…

介观与纳米尺度物理 · 物理学 2024-09-10 K. A. Baryshnikov , A. V. Gert , Yu. B. Vasilyev , A. P. Dmitriev

We show that, in 1+1 dimensional gauge theories, a heavy probe charge is screened by dynamical massless fermions both in the case when the source and the dynamical fermions belong to the same representation of the gauge group and,…

高能物理 - 理论 · 物理学 2009-10-28 D. J. Gross , I. R. Klebanov , A. V. Matytsin , A. V. Smilga

We have performed self-consistent calculations of the nonlinear screening of a point charge Z in a two-dimensional electron gas using a density functional theory method. We find that the screened potential for a Z=1 charge supports a bound…

介观与纳米尺度物理 · 物理学 2009-11-07 E. Zaremba , I. Nagy , P. M. Echenique

Screening of a strongly charged macroion by multivalent counterions is considered. It is shown that counterions form a strongly correlated liquid at the surface of the macroion. Cohesive energy of this liquid leads to additional attraction…

软凝聚态物质 · 物理学 2009-10-31 B. I. Shklovskii

We extend our previous study [J. Chem. Phys. 138, 204907 (2013)] to quantify the screening properties of four mesoscale smoothed charge models used in dissipative particle dynamics. Using a combination of the hypernetted chain integral…

软凝聚态物质 · 物理学 2015-06-18 Patrick B. Warren , Andrey Vlasov

Screening of the electric field of a test charge by monolayer and double-layer composite fermion systems is considered. It is shown that the electric field of the test charge is partly screened at distances much large then the magnetic…

介观与纳米尺度物理 · 物理学 2009-10-31 D. V. Fil

We generalize the concept of charge regulation of ionic solutions, and apply it to complex fluids with mobile macro-ions having internal non-electrostatic degrees of freedom. The suggested framework provides a convenient tool for…

软凝聚态物质 · 物理学 2018-01-17 Tomer Markovich , David Andelman , Rudi Podgornik

Model macroion solutions next to a charged wall show interface \textit{true overcharging}, charge reversal and inversion, and layering. Macroion layering is present, even if the wall or the macroparticle are \textit{uncharged} or if the…

化学物理 · 物理学 2007-05-23 Marcelo Lozada-Cassou , Felipe Jimenez-Angeles

Screening mechanisms are a natural method for suppressing long-range forces in scalar-tensor theories as they link the local background density to their strength. Focusing on Brans-Dicke theories, those including a non-minimal coupling…

高能物理 - 唯象学 · 物理学 2025-01-22 Sergio Sevillano Muñoz

We study the screening length L_s of a heavy quark-antiquark pair in strongly coupled gauge theory plasmas flowing at velocity v. Using the AdS/CFT correspondence we investigate, analytically, the screening length in the ultra-relativistic…

高能物理 - 理论 · 物理学 2009-11-11 Elena Caceres , Makoto Natsuume , Takashi Okamura

A density functional theory for a macroion suspension is examined, where the excess free energy corresponds to the macroion self energy arising from the polarisation of the supporting electrolyte solution. This is treated within a…

软凝聚态物质 · 物理学 2007-05-23 Patrick B. Warren

Electrons in two-dimensional graphene sheets behave as interacting chiral Dirac fermions and have unique screening properties due to their symmetry and reduced dimensionality. By using a combination of scanning tunneling spectroscopy…

We investigate a classical system that consists of a U(1) gauge field and a complex Higgs scalar field with a potential that breaks the symmetry spontaneously. We obtain numerical solutions of the system in the presence of a smoothly…

高能物理 - 理论 · 物理学 2018-11-28 Hideki Ishihara , Tatsuya Ogawa

A nonlinear response theory is developed and applied to electrostatic interactions between spherical macroions, screened by surrounding microions, in charge-stabilized colloidal suspensions. The theory describes leading-order nonlinear…

软凝聚态物质 · 物理学 2009-11-10 A. R. Denton

An expression is derived within the framework of the Debye-H\"uckel approximation for the screening length of a field in a p-type semiconductor taking into account the energy spread of immobile acceptor levels and the density of states tail…

材料科学 · 物理学 2014-07-21 N. A. Poklonski
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