The Experts below are selected from a list of 300 Experts worldwide ranked by ideXlab platform
X Y Hou - One of the best experts on this subject based on the ideXlab platform.
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field emission enhancement by the quantum structure in an ultrathin multilayer planar cold cathode
Applied Physics Letters, 2008Co-Authors: Ruzhi Wang, Hui Yan, Baigeng Wang, Xingwang Zhang, X Y HouAbstract:Field electron emission (FE) from an ultrathin multilayer planar cold cathode (UMPC) including a quantum well structure has been both experimentally and theoretically investigated. We found that by tuning the energy levels of UMPC, the FE characteristic can be evidently improved, which is unexplained by conventional FE mechanism. FE emission mechanism, dependent on the quantum structure effect, which supplies a favorable location of electron emission and enhances tunneling ability, has been presented to expound the notable amelioration. An Approximate Formula, brought forward, can predict the quantum FE enhancement, in which the theoretical prediction is close to the experimental result.
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field electron emission mechanism in an ultrathin multilayer planar cold cathode
arXiv: Mesoscale and Nanoscale Physics, 2006Co-Authors: Rui Wang, Baigeng Wang, Hugen Yan, X W Zhang, X Y HouAbstract:Field electron emission from an ultrathin multilayer planar cold cathode (UMPC) including quantum well structure has been both experimentally and theoretically investigated. We found that only tuning the energy levels of UMPC the field electron emission (FE) characteristic can be evidently improved, which is unexplained by the conventional FE mechanism. Field electron emission mechanism dependent on the quantum structure effect, which supplies a favorable location of electron emission and enhances tunneling ability, has been presented to expound the notable amelioration. An Approximate Formula brought forward can predict the quantum FE enhancement, which the theoretical prediction is close to the experimental result.
Mark S Gordon - One of the best experts on this subject based on the ideXlab platform.
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an Approximate Formula for the intermolecular pauli repulsion between closed shell molecules ii application to the effective fragment potential method
Journal of Chemical Physics, 1998Co-Authors: Jan H Jensen, Mark S GordonAbstract:The accuracy and efficiency of an Approximate Formula for the intermolecular Pauli repulsion between closed shell molecules, derived earlier [Mol. Phys. 89, 1313 (1996)], is demonstrated for dimers of H2O, CH3OH, CH2Cl2, CH3CN, (CH3)2CO, and (CH3)2SO. The energy derivative with respect to a Cartesian coordinate and rigid rotation about the center-of-mass (torques) are presented. The Pauli repulsion energy term is then combined with the Coulomb and classical induction energy terms of the effective fragment potential method [J. Chem. Phys. 105, 1968, 11081 (1996)] to give a general intermolecular interaction potential. This potential is applied to water and methanol clusters.
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an Approximate Formula for the intermolecular pauli repulsion between closed shell molecules
Molecular Physics, 1996Co-Authors: Jan H Jensen, Mark S GordonAbstract:The exchange repulsion Formula proposed by Murrell and co-workers (Proc. Roy. Soc. (Lond.) 1965, A284, 566; J. chem. Phys., 1967, 47, 4916) is considered in detail. Potentially important terms missing in the formalism of Murrell and co-workers are identified and evaluated for the water dimer using several basis sets. Insights into the contributing terms are obtained by using localized molecular orbitals. The results point towards a relatively simple expression for intermolecular exchange repulsion, based on the isolated wavefunctions of the two overlapping species.
Ruzhi Wang - One of the best experts on this subject based on the ideXlab platform.
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field emission enhancement by the quantum structure in an ultrathin multilayer planar cold cathode
Applied Physics Letters, 2008Co-Authors: Ruzhi Wang, Hui Yan, Baigeng Wang, Xingwang Zhang, X Y HouAbstract:Field electron emission (FE) from an ultrathin multilayer planar cold cathode (UMPC) including a quantum well structure has been both experimentally and theoretically investigated. We found that by tuning the energy levels of UMPC, the FE characteristic can be evidently improved, which is unexplained by conventional FE mechanism. FE emission mechanism, dependent on the quantum structure effect, which supplies a favorable location of electron emission and enhances tunneling ability, has been presented to expound the notable amelioration. An Approximate Formula, brought forward, can predict the quantum FE enhancement, in which the theoretical prediction is close to the experimental result.
Jan H Jensen - One of the best experts on this subject based on the ideXlab platform.
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an Approximate Formula for the intermolecular pauli repulsion between closed shell molecules ii application to the effective fragment potential method
Journal of Chemical Physics, 1998Co-Authors: Jan H Jensen, Mark S GordonAbstract:The accuracy and efficiency of an Approximate Formula for the intermolecular Pauli repulsion between closed shell molecules, derived earlier [Mol. Phys. 89, 1313 (1996)], is demonstrated for dimers of H2O, CH3OH, CH2Cl2, CH3CN, (CH3)2CO, and (CH3)2SO. The energy derivative with respect to a Cartesian coordinate and rigid rotation about the center-of-mass (torques) are presented. The Pauli repulsion energy term is then combined with the Coulomb and classical induction energy terms of the effective fragment potential method [J. Chem. Phys. 105, 1968, 11081 (1996)] to give a general intermolecular interaction potential. This potential is applied to water and methanol clusters.
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an Approximate Formula for the intermolecular pauli repulsion between closed shell molecules
Molecular Physics, 1996Co-Authors: Jan H Jensen, Mark S GordonAbstract:The exchange repulsion Formula proposed by Murrell and co-workers (Proc. Roy. Soc. (Lond.) 1965, A284, 566; J. chem. Phys., 1967, 47, 4916) is considered in detail. Potentially important terms missing in the formalism of Murrell and co-workers are identified and evaluated for the water dimer using several basis sets. Insights into the contributing terms are obtained by using localized molecular orbitals. The results point towards a relatively simple expression for intermolecular exchange repulsion, based on the isolated wavefunctions of the two overlapping species.
Baigeng Wang - One of the best experts on this subject based on the ideXlab platform.
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field emission enhancement by the quantum structure in an ultrathin multilayer planar cold cathode
Applied Physics Letters, 2008Co-Authors: Ruzhi Wang, Hui Yan, Baigeng Wang, Xingwang Zhang, X Y HouAbstract:Field electron emission (FE) from an ultrathin multilayer planar cold cathode (UMPC) including a quantum well structure has been both experimentally and theoretically investigated. We found that by tuning the energy levels of UMPC, the FE characteristic can be evidently improved, which is unexplained by conventional FE mechanism. FE emission mechanism, dependent on the quantum structure effect, which supplies a favorable location of electron emission and enhances tunneling ability, has been presented to expound the notable amelioration. An Approximate Formula, brought forward, can predict the quantum FE enhancement, in which the theoretical prediction is close to the experimental result.
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field electron emission mechanism in an ultrathin multilayer planar cold cathode
arXiv: Mesoscale and Nanoscale Physics, 2006Co-Authors: Rui Wang, Baigeng Wang, Hugen Yan, X W Zhang, X Y HouAbstract:Field electron emission from an ultrathin multilayer planar cold cathode (UMPC) including quantum well structure has been both experimentally and theoretically investigated. We found that only tuning the energy levels of UMPC the field electron emission (FE) characteristic can be evidently improved, which is unexplained by the conventional FE mechanism. Field electron emission mechanism dependent on the quantum structure effect, which supplies a favorable location of electron emission and enhances tunneling ability, has been presented to expound the notable amelioration. An Approximate Formula brought forward can predict the quantum FE enhancement, which the theoretical prediction is close to the experimental result.