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Effect of electric field on the band structures of graphene/BN and BN/BN bilayers is investigated within the framework of density functional theory. A relatively large degree of modulation is predicted for the graphene/BN bilayer. The…

材料科学 · 物理学 2015-05-30 Radhakrishnan Balu , Xiaoliang Zhong , Ravindra Pandey , Shashi P. Karna

The distribution of net electric charge in graphene is investigated, using both a constitutive atomic charge-dipole interaction model and an approximate analytical solution to Laplace's equation. We demonstrate a strong size dependence of…

介观与纳米尺度物理 · 物理学 2009-09-21 Zhao Wang , Robert W. Scharstein

We demonstrate dispersive readout of individual charge states in a gate-defined few-electron quantum dot in bilayer graphene. We employ a radio frequency reflectometry circuit, where an LC resonator with a resonance frequency close to 280…

We theoretically study sedimentation-diffusion equilibrium of dilute binary, ternary, and polydisperse mixtures of colloidal particles with different buoyant masses and/or charges. We focus on the low-salt regime, where the entropy of the…

软凝聚态物质 · 物理学 2009-11-11 Jos Zwanikken , rene van Roij

In this work we present simple, physics-based models for two effects that have been noted in the fully depleted CCDs that are presently used in the Dark Energy Survey Camera. The first effect is the observation that the point-spread…

天体物理仪器与方法 · 物理学 2015-06-19 S. E. Holland , C. J. Bebek , W. F. Kolbe , J. S. Lee

Announcement of detection of Solar 8B neutrinos by XENONnT dual-phase detector come with a suite of unexplained detector effects. We expect accumulation of surface charges and charged surface instability resulting in maximal surface…

天体物理仪器与方法 · 物理学 2025-10-22 Sergey Pereverzev

We report on measurements of charge transfer in GEM structures in high magnetic fields. These were performed in the framework of the R&D work for a Time Projection Chamber at a future Linear Collider. A small test chamber has been installed…

仪器与探测器 · 物理学 2009-11-10 M. Killenberg , S. Lotze , J. Mnich , A. Muennich , S. Roth , F. Sefkow , M. Tonutti , M. Weber , P. Wienemann

This paper examines the response of electrolyte-saturated polymer gels, embedded with charged spherical inclusions, to a weak gradient of electrolyte concentration. These composites present a model system to study microscale electrokinetic…

软凝聚态物质 · 物理学 2009-11-11 Reghan J. Hill

It is shown that clustering of charged impurities on graphene can suppress their contribution to the resistivity by a large factor of about the number of impurities per cluster, while leaving the density dependence unchanged. If the cluster…

介观与纳米尺度物理 · 物理学 2009-05-25 M. I. Katsnelson , F. Guinea , A. K. Geim

We report the observation in the direct space of the transport of a few thousand charges submitted to a tunable electric field along the surface of a silicon oxide layer. Charges are both deposited and observed using the same Electrostatic…

凝聚态物理 · 物理学 2007-05-23 J. S. Lambert , G. De Loubens , C. Guthmann , M. Saint-Jean , T. Melin

The effect of external static charging of graphene and its flakes are investigated by using first-principles calculations. While the Fermi level of negatively charged graphene rises and then is quickly pinned by the parabolic, nearly free…

介观与纳米尺度物理 · 物理学 2015-03-17 Mehmet Topsakal , Salim Ciraci

We argue, for a wide class of systems including graphene, that in the low temperature, high density, large separation and strong screening limits the drag resistivity behaves as d^{-4}, where d is the separation between the two layers. The…

介观与纳米尺度物理 · 物理学 2015-03-20 B Amorim , N M R Peres

A model of the Li-diffused inactive layer in P-type high purity germanium detectors is built to describe the transportation of charge carriers and calculate the charge collection efficiency therein. The model is applied to calculate charge…

仪器与探测器 · 物理学 2022-12-29 W. H. Dai , H. Ma , Q. Yue , L. T. Yang , Z. Zeng , J. P. Cheng , J. L. Li

The working of a resistive plate chamber depends on the electric field applied inside the gas gap. The strength of this electric field inside the gas gap depends on parameters like electrode thickness, permittivity, gas gap, among others.…

仪器与探测器 · 物理学 2022-05-03 Tanay Dey , Supratik Mukhopadhyay , Subhasis Chattopadhyay

It is state-of-the-art to describe the dielectric behavior of an insulation material by its permittivity and its specific electric conductivity in order to estimate the dielectric stress of an insulation system. Thus, the electric field at…

应用物理 · 物理学 2019-11-22 Tobias Gabler , Karsten Backhaus , Steffen Großmann , Ronny Fritsche

Ab initio density functional theory (DFT) simulations were used to investigate an influence of electric field, parallel to single and multilayer graphene on its electron dispersion relations close to K point. It was shown that for both…

材料科学 · 物理学 2016-11-09 Stanisław Krukowski , Jakub Sołtys , Jolanta Borysiuk , Jacek Piechota

The elecrooptical response of graphene due to heating and drift of carriers is studied theoretically. Real and imaginary parts of the dynamic conductivity tensor are calculated for the case of effective momentum relaxation, when anisotropic…

介观与纳米尺度物理 · 物理学 2015-05-14 M. V. Strikha , F. T. Vasko

The first successful attempts to optimize the electric field in Resistive Microstrip Gas Chamber and resistive microdot detectors using additional field shaping strips located inside the detector substrate are described

仪器与探测器 · 物理学 2015-06-22 V. Cairo , R. De Oliveira , P. Fonte , S. Franchino , V. Peskov , P. Picchi , F. Pietropaolo

We investigate the AC conductivity of binary random impedance networks, with emphasis on its dependence on the ratio of the complex conductances of both phases. We propose an algorithm to determine the conductance of a finite network, in…

无序系统与神经网络 · 物理学 2009-10-31 Th. Jonckheere , J. M. Luck

We consider a double-layer system made of two parallel bilayer graphene sheets separated by a dielectric medium. We calculate the finite-temperature electrical conductivity of the first layer due to charged impurities located in two layers.…

介观与纳米尺度物理 · 物理学 2021-03-09 Dang Khanh Linh , Nguyen Quoc Khanh