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“Swift electrochemical detection of paraben an endocrine disruptor by In2O3 nanobricks”. Qurashi A, Rather JA, Yamazaki T, Sohail M, De Wael K, Merzougui B, Hakeem AS, Sensors and actuators : B : chemical 221, 167 (2015). http://doi.org/10.1016/J.SNB.2015.06.026
Abstract: Novel indium oxide (In2O3) nanobricks have been prepared by template-less and surfactant-free hydrothermal synthesis method and were characterized by X-ray diffraction (XRD), Raman spectroscopy, photoluminescence (PL) spectroscopy and field emission scanning electronic microscopy (FESEM). The synthesized In2O3 nanobricks were successfully immobilized on the surface of glassy carbon electrode for the detection of Parabens (butylparaben). Owing to the unique structure and intriguing properties of these In2O3 nanobricks, the nanostructured thin-film electrode has shown an obvious electrocatalytic activity for the detection of butylparaben (BP). The detection limit (LOD) was estimated as 3 s/m and the sensitivity (LOQ) was calculated as 10 s/m and were found to be 0.08 μM and 0.26 μA μM−1 cm−2 respectively. This sensor showed high sensitivity compared with the reported electrochemical sensors for the detection of BP. The fabricated sensor was successfully applied for the detection of butyl paraben in real cosmetic samples with good recovery ranging from 96.0 to 100.3%.
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Impact Factor: 5.401
Times cited: 11
DOI: 10.1016/J.SNB.2015.06.026
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“Barite formation in the Southern Ocean water column”. Stroobants N, Dehairs F, Goeyens L, Vanderheijden N, Van Grieken R, Marine chemistry 35, 411 (1991). http://doi.org/10.1016/S0304-4203(09)90033-0
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1016/S0304-4203(09)90033-0
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“EDXRF determination of impurities in potassium dihydrogenphosphate single crystals and raw materials”. Belikov KN, Mikhailova LI, Spolnik ZM, Van Grieken R, X-ray spectrometry 35, 112 (2006). http://doi.org/10.1002/XRS.874
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1002/XRS.874
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“Anharmonic effects on thermodynamic properties of a graphene monolayer”. da Silva ALC, Candido L, Teixeira Rabelo JN, Hai G-Q, Peeters FM, Europhysics letters 107, 56004 (2014). http://doi.org/10.1209/0295-5075/107/56004
Abstract: We extend the unsymmetrized self-consistent-field method (USF) for anharmonic crystals to layered non-Bravais crystals to investigate structural, dynamical and thermodynamic properties of a free-standing graphene monolayer. In this theory, the main anharmonicity of the crystal lattice has been included and the quantum corrections are taken into account in an h-expansion for the one-particle density matrix. The obtained result for the thermal expansion coefficient (TEC) of graphene shows a strong temperature dependence and agrees with experimental results by Bao et al. (Nat. Nanotechnol., 4 (2009) 562). The obtained value of TEC at room temperature (300 K) is -6.4 x 10(- 6) K- 1 and it becomes positive for T > T-alpha = 358K. We find that quantum effects are significant for T < 1000 K. The interatomic distance, effective amplitudes of the graphene lattice vibrations, adiabatic and isothermal bulk moduli, isobaric and isochoric heat capacities are also calculated and their temperature dependences are determined. Copyright (C) EPLA, 2014
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 1.957
Times cited: 23
DOI: 10.1209/0295-5075/107/56004
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“Artificial molecular quantum rings: spin density functional theory calculations”. Castelano LK, Hai G-Q, Partoens B, Peeters FM, Physical review : B : condensed matter and materials physics 74, 045313 (2006). http://doi.org/10.1103/PhysRevB.74.045313
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 24
DOI: 10.1103/PhysRevB.74.045313
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“Artificial molecular quantum rings under magnetic field influence”. Castelano LK, Hai GQ, Partoens B, Peeters FM, Journal of applied physics 106, 073702 (2009). http://doi.org/10.1063/1.3223360
Abstract: The ground states of a few electrons confined in two vertically coupled quantum rings in the presence of an external magnetic field are studied systematically within the current spin-density functional theory. Electron-electron interactions combined with inter-ring tunneling affect the electronic structure and the persistent current. For small values of the external magnetic field, we recover the zero magnetic field molecular quantum ring ground state configurations. Increasing the magnetic field many angular momentum, spin, and isospin transitions are predicted to occur in the ground state. We show that these transitions follow certain rules, which are governed by the parity of the number of electrons, the single-particle picture, Hunds rules, and many-body effects.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 2.068
Times cited: 5
DOI: 10.1063/1.3223360
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“Continuous structural transitions in quasi-one-dimensional classical Wigner crystals”. Piacente G, Hai GQ, Peeters FM, Physical review : B : condensed matter and materials physics 81 (2010). http://doi.org/10.1103/PhysRevB.81.024108
Abstract: We study the structural phase transitions in confined systems of strongly interacting particles. We consider infinite quasi-one-dimensional systems with different pairwise repulsive interactions in the presence of an external confinement following a power law. Within the framework of Landaus theory, we find the necessary conditions to observe continuous transitions and demonstrate that the only allowed continuous transition is between the single- and the double-chain configurations and that it only takes place when the confinement is parabolic. We determine analytically the behavior of the system at the transition point and calculate the critical exponents. Furthermore, we perform Monte Carlo simulations and find a perfect agreement between theory and numerics.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 37
DOI: 10.1103/PhysRevB.81.024108
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“Control of the persistent currents in two interacting quantum rings through the Coulomb interaction and interring tunneling”. Castelano LK, Hai G-Q, Partoens B, Peeters FM, Physical review : B : solid state 78, 195315 (2008). http://doi.org/10.1103/PhysRevB.78.195315
Abstract: The persistent current in two vertically coupled quantum rings containing few electrons is studied. We find that the Coulomb interaction between the rings in the absence of tunneling affects the persistent current in each ring and the ground-state configurations. Quantum tunneling between the rings alters significantly the ground state and the persistent current in the system.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 28
DOI: 10.1103/PhysRevB.78.195315
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“Effects of intersubband coupling on Friedel oscillations in quasi-two-dimensional electron systems”. Hai GQ, Peeters FM, Studart N, Marques GE, Superlattices and microstructures 25, 185 (1999). http://doi.org/10.1006/spmi.1998.0635
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 2.123
Times cited: 2
DOI: 10.1006/spmi.1998.0635
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“Effects of intersubband interaction on multisubband electron transport in single and double quantum wells”. Hai GQ, Studart N, Marques GE, Peeters FM, Koenraad PM, Physica. E: Low-dimensional systems and nanostructures 2, 222 (1998). http://doi.org/10.1016/S1386-9477(98)00048-4
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 2.221
Times cited: 3
DOI: 10.1016/S1386-9477(98)00048-4
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“Electron-mobility in 2 coupled delta-layers”. Hai, Studart, Peeters FM, Physical review : B : condensed matter and materials physics 52, 11273 (1995). http://doi.org/10.1103/PhysRevB.52.11273
Abstract: The low-temperature transport properties are studied for electrons confined in delta-doped semiconductor structures with two sheets in parallel. The subband quantum mobility and transport mobility are calculated numerically for the Si delta-doped GaAs systems. The effect of coupling of the two delta layers on the electron transport is investigated. Our calculations are in good agreement with experimental results.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 25
DOI: 10.1103/PhysRevB.52.11273
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“Electron mobility in two coupled &delta, layers”. Hai GQ, Studart N, Peeters FM, Physical review : B : condensed matter and materials physics 52, 11273 (1995)
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 24
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“Ground state configurations of vertically coupled quantum rings”. Castelano LK, Hai G-Q, Partoens B, Peeters FM, Physica status solidi: C: conferences and critical reviews 4, 560 (2007). http://doi.org/10.1002/pssc.200673275
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Times cited: 1
DOI: 10.1002/pssc.200673275
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“Hamiltonian of a many-electron system with single-electron and electron-pair states in a two-dimensional periodic potential”. Hai G-Q, Peeters FM, European physical journal : B : condensed matter and complex systems 88, 20 (2015). http://doi.org/10.1140/epjb/e2014-50686-x
Abstract: Based on the metastable electron-pair energy band in a two-dimensional (2D) periodic potential obtained previously by Hai and Castelano [J. Phys.: Condens. Matter 26, 115502 (2014)], we present in this work a Hamiltonian of many electrons consisting of single electrons and electron pairs in the 2D system. The electron-pair states are metastable of energies higher than those of the single-electron states at low electron density. We assume two different scenarios for the single-electron band. When it is considered as the lowest conduction band of a crystal, we compare the obtained Hamiltonian with the phenomenological model Hamiltonian of a boson-fermion mixture proposed by Friedberg and Lee [Phys. Rev. B 40, 6745 (1989)]. Single-electron-electron-pair and electron-pair-electron-pair interaction terms appear in our Hamiltonian and the interaction potentials can be determined from the electron-electron Coulomb interactions. When we consider the single-electron band as the highest valence band of a crystal, we show that holes in this valence band are important for stabilization of the electron-pair states in the system.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 1.461
Times cited: 2
DOI: 10.1140/epjb/e2014-50686-x
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“High energy transitions of shallow magneto-donors in a GaAs/Al0.3Ga0.7As multiple quantum well”. Bruno-Alfonso A, Hai G-Q, Peeters FM, Yeo T, Ryu SR, McCombe BD, Journal of physics : condensed matter 13, 9761 (2001). http://doi.org/10.1088/0953-8984/13/43/307
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 2.649
Times cited: 7
DOI: 10.1088/0953-8984/13/43/307
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“High-field cyclotron resonance and electron-phonon interaction in modulation-doped multiple quantum well structures”. Wang YJ, Jiang ZX, McCombe BD, Peeters FM, Wu XG, Hai GQ, Eusfis TJ, Schaff W, Physica: B : condensed matter 256/258, 215 (1998). http://doi.org/10.1016/S0921-4526(98)00572-9
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 1.386
Times cited: 5
DOI: 10.1016/S0921-4526(98)00572-9
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“Interface effects on magnetopolarons in GaAs/AlxGa1-xAs quantum wells at high magnetic fields”. Hai GQ, Peeters FM, Studart N, Wang YJ, McCombe BD, Physical review : B : condensed matter and materials physics 58, 7822 (1998). http://doi.org/10.1103/PhysRevB.58.7822
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 8
DOI: 10.1103/PhysRevB.58.7822
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“Intersubband-coupling and screening effects on the electron transport in a quasi-two-dimensional δ-doped semiconductor system”. Hai G-Q, Studart N, Peeters FM, Koenraad PM, Wolter JH, Journal of applied physics 80, 5809 (1996). http://doi.org/10.1063/1.363573
Abstract: The effects due to intersubband coupling and screening on the ionized impurity scattering are studied for a quasi-two-dimensional electron system in delta-doped semiconductors. We found that intersubband coupling plays an essential role in describing the screening properties and the effect of ionized impurity scattering on the mobility in a multisubband system. At the onset of the occupation of a higher subband, the screening due to the intersubband coupling leads to a reduction of the small angle scattering rate in the lower subband. We showed that such an effect is significant in a delta-doped quantum well and results in a pronounced increase of the quantum mobility at the onset of the occupation of a higher subband. (C) 1996 American Institute of Physics.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 2.183
Times cited: 40
DOI: 10.1063/1.363573
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“Intersubband plasmons in quasi-one-dimensional electron systems on a liquid helium surface”. Tavares MRS, Hai G-Q, Peeters FM, Studart N, Physical review : B : condensed matter and materials physics 68, 140504 (2003). http://doi.org/10.1103/PhysRevB.68.140504
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 3
DOI: 10.1103/PhysRevB.68.140504
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“Magnetopolaron effect in parabolic quantum wells in tilted magnetic fields”. Hai GQ, Peeters FM, Physical review : B : condensed matter and materials physics 60, 8984 (1999). http://doi.org/10.1103/PhysRevB.60.8984
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 36
DOI: 10.1103/PhysRevB.60.8984
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“Multisubband electron transport in δ-doped semiconductor systems”. Hai GQ, Studart N, Peeters FM, Physical review : B : condensed matter and materials physics 52, 8363 (1995)
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 65
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“Multisubband electron-transport in delta-doped semiconductor systems”. Hai, Studart, Peeters FM, Physical review : B : condensed matter and materials physics 52, 8363 (1995). http://doi.org/10.1103/PhysRevB.52.8363
Abstract: The electron transport properties in delta-doped semiconductor systems-are studied. The subband electronic structure of the delta-doped system is obtained by solving the coupled Schrodinger and Poisson equations. The screening of the quasi-two-dimensional electron gas is taken into account for the ionized impurity scattering through the matrix dielectric function within the random-phase approximation. The quantum and transport mobilities are calculated numerically as a function of the total electron density and the width of the doped layer at zero temperature. The intersubband scattering and the effect of empty subbands above the Fermi level on the electron mobilities are investigated. The calculated mobilities are in reasonable agreement with the available experimental results.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 67
DOI: 10.1103/PhysRevB.52.8363
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“Optically detected magnetophonon resonance in polar semiconductors GaAs”. Hai GQ, Peeters FM, Physical review : B : condensed matter and materials physics 60, 16513 (1999). http://doi.org/10.1103/PhysRevB.60.16513
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.836
Times cited: 24
DOI: 10.1103/PhysRevB.60.16513
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“Polaron effects on cyclotron mass due to interface and slab phonons in GaAs/AlGaAs quantum wells”. Hai G-Q, Studart N, Peeters FM, Brazilian journal of physics 26, 219 (1996)
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 0.81
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“A quantum Monte Carlo study on electron correlation in all-metal aromatic clusters MAl4 –, (M = Li, Na, K, Rb, Cu, Ag and Au)”. Brito BGA, Hai G-Q, Teixeira Rabelo JN, Cândido L, Physical chemistry, chemical physics 16, 8639 (2014). http://doi.org/10.1039/c4cp00416g
Abstract: Using fixed-node diffusion quantum Monte Carlo (FN-DMC) simulation we investigate the electron correlation in all-metal aromatic clusters MAl4- (with M = Li, Na, K, Rb, Cu, Ag and Au). The electron detachment energies and electron affinities of the clusters are obtained. The vertical electron detachment energies obtained from the FN-DMC calculations are in very good agreement with the available experimental results. Calculations are also performed within the Hartree-Fock approximation, density-functional theory (DFT), and the couple-cluster (CCSD(T)) method. From the obtained results, we analyse the impact of the electron correlation effects in these bimetallic clusters and find that the correlation of the valence electrons contributes significantly to the detachment energies and electron affinities, varying between 20% and 50% of their total values. Furthermore, we discuss the electron correlation effects on the stability of the clusters as well as the accuracy of the DFT and CCSD(T) calculations in the present systems.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 4.123
Times cited: 10
DOI: 10.1039/c4cp00416g
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“Resonant magnetopolaron effect in GaAs/AlGaAs multiple quantum well structures”. Wang YJ, Nichel HA, McCombe BD, Peeters FM, Shi JM, Hai GQ, Wu XG, Eustis TJ, Schaff W, Physica. E: Low-dimensional systems and nanostructures 2, 161 (1998). http://doi.org/10.1016/S1386-9477(98)00035-6
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 2.221
DOI: 10.1016/S1386-9477(98)00035-6
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“Resonant magnetopolaron effects due to interface phonons in GaAs/AlGaAs multiple quantum well structures”. Wang YJ, Nickel HA, McCombe BD, Peeters FM, Shi JM, Hai GQ, Wu XG, Eustis TJ, Schaff W, Physical review letters 79, 3226 (1997)
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 8.462
Times cited: 36
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“Sorting the modes contributing to guidance in strain-induced graphene waveguides”. Villegas CEP, Tavares MRS, Hai G-Q, Peeters FM, New journal of physics 15, 023015 (2013). http://doi.org/10.1088/1367-2630/15/2/023015
Abstract: We propose a simple way of probing the number of modes contributing to the channeling in graphene waveguides which are formed by a gauge potential produced by mechanical strain. The energy mode structure for both homogeneous and non-homogeneous strain regimes is carefully studied using the continuum description of the Dirac equation. We found that high strain values privilege negative (instead of positive) group velocities throughout the guidance, sorting the types of modes flowing through it. We also show how the effect of a substrate-induced gap competes against the strain.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.786
Times cited: 7
DOI: 10.1088/1367-2630/15/2/023015
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“Spin- and valley-dependent commensurability oscillations and electric-field-induced quantum Hall plateaux in periodically modulated silicene”. Shakouri K, Vasilopoulos P, Vargiamidis V, Hai G-Q, Peeters FM, Applied physics letters 104, 213109 (2014). http://doi.org/10.1063/1.4878509
Abstract: We study the commensurability oscillations in silicene subject to a perpendicular electric field E-z, a weak magnetic field B, and a weak periodic potential V = V-0 cos(Cy); C = 2 pi/a(0) with a(0) its period. The field E-z and/or the modulation lift the spin degeneracy of the Landau levels and lead to spin and valley resolved Weiss oscillations. The spin resolution is maximal when the field E-z is replaced by a periodic one E-z = E-0 cos(Dy); D = 2 pi/b(0), while the valley one is maximal for b(0) = a(0). In certain ranges of B values, the current is fully spin or valley polarized. Additional quantum Hall conductivity plateaux arise due to spin and valley intra-Landau-level transitions. (C) 2014 AIP Publishing LLC.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.411
Times cited: 16
DOI: 10.1063/1.4878509
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“Two vertically coupled quantum rings with tunneling”. Castelano LK, Hai GQ, Partoens B, Peeters FM, Brazilian journal of physics 36, 936 (2006). http://doi.org/10.1590/S0103-97332006000600037
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 0.732
Times cited: 2
DOI: 10.1590/S0103-97332006000600037
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