The Experts below are selected from a list of 94530 Experts worldwide ranked by ideXlab platform
Partha P. Mitra - One of the best experts on this subject based on the ideXlab platform.
-
multiple wave vector extensions of the nmr pulsed field gradient spin echo diffusion measurement
Physical Review B, 1995Co-Authors: Partha P. MitraAbstract:Multiple wave-vector extensions of NMR pulsed-field-gradient diffusion measurements are discussed in the context of diffractionlike effects of restricted diffusion. In the case of two independent wave vectors, it is shown that the dependence of the amplitude on the Relative Angle between the wave vectors carries information that is absent in the usual single-wave-vector amplitude. It is shown that a two-wave-vector measurement is sensitive to restricted diffusion even at small wave vectors, in contrast with the single-wave-vector case. It is proposed that the angular dependence noted above may be used to distinguish effects of restricted diffusion from those arising from a distribution of diffusion constants. © 1995 The American Physical Society.
-
multiple wave vector extensions of the nmr pulsed field gradient spin echo diffusion measurement
Physical Review B, 1995Co-Authors: Partha P. MitraAbstract:Multiple wave-vector extensions of NMR pulsed-field-gradient diffusion measurements are discussed in the context of diffractionlike effects of restricted diffusion. In the case of two independent wave vectors, it is shown that the dependence of the amplitude on the Relative Angle between the wave vectors carries information that is absent in the usual single-wave-vector amplitude. It is shown that a two-wave-vector measurement is sensitive to restricted diffusion even at small wave vectors, in contrast with the single-wave-vector case. It is proposed that the angular dependence noted above may be used to distinguish effects of restricted diffusion from those arising from a distribution of diffusion constants.
Joshua Thompson - One of the best experts on this subject based on the ideXlab platform.
-
determination of interatomic coupling between two dimensional crystals using Angle resolved photoemission spectroscopy
Nature Communications, 2020Co-Authors: Joshua Thompson, Ding Pei, Han Peng, Hongya Wang, N Channa, Hailin Peng, Alexei Barinov, Niels B M SchroterAbstract:Lack of directional bonding between two-dimensional crystals like graphene or monolayer transition metal dichalcogenides provides unusual freedom in the selection of components for vertical van der Waals heterostructures. However, even for identical layers, their stacking, in particular the Relative Angle between their crystallographic directions, modifies properties of the structure. We demonstrate that the interatomic coupling between two two-dimensional crystals can be determined from Angle-resolved photoemission spectra of a trilayer structure with one aligned and one twisted interface. Each of the interfaces provides complementary information and together they enable self-consistent determination of the coupling. We parametrise interatomic coupling for carbon atoms by studying twisted trilayer graphene and show that the result can be applied to structures with different twists and number of layers. Our approach demonstrates how to extract fundamental information about interlayer coupling in a stack of two-dimensional crystals and can be applied to many other van der Waals interfaces.
-
determination of interatomic coupling between two dimensional crystals using Angle resolved photoemission spectroscopy
arXiv: Mesoscale and Nanoscale Physics, 2020Co-Authors: Joshua Thompson, Ding Pei, Han Peng, Hongya Wang, N Channa, Hailin Peng, Alexei Barinov, Niels B M SchroterAbstract:Lack of directional bonding between two-dimensional crystals like graphene or monolayer transition metal dichalcogenides provides unusual freedom in selection of components for vertical van der Waals heterostructures. However, even for identical layers, their stacking, in particular the Relative Angle between their crystallographic directions, modifies properties of the structure. We demonstrate that the interatomic coupling between two two-dimensional crystals can be determined from Angle-resolved photoemission spectra of a trilayer structure with one aligned and one twisted interface. Each of the interfaces provides complementary information and together they enable self-consistent determination of the coupling. We parametrize interatomic coupling for carbon atoms by studying twisted trilayer graphene and show that the result can be applied to structures with different twists and number of layers. Our approach demonstrates how to extract fundamental information about interlayer coupling in a stack of two-dimensional crystals and can be applied to many other van der Waals interfaces.
Niels B M Schroter - One of the best experts on this subject based on the ideXlab platform.
-
determination of interatomic coupling between two dimensional crystals using Angle resolved photoemission spectroscopy
Nature Communications, 2020Co-Authors: Joshua Thompson, Ding Pei, Han Peng, Hongya Wang, N Channa, Hailin Peng, Alexei Barinov, Niels B M SchroterAbstract:Lack of directional bonding between two-dimensional crystals like graphene or monolayer transition metal dichalcogenides provides unusual freedom in the selection of components for vertical van der Waals heterostructures. However, even for identical layers, their stacking, in particular the Relative Angle between their crystallographic directions, modifies properties of the structure. We demonstrate that the interatomic coupling between two two-dimensional crystals can be determined from Angle-resolved photoemission spectra of a trilayer structure with one aligned and one twisted interface. Each of the interfaces provides complementary information and together they enable self-consistent determination of the coupling. We parametrise interatomic coupling for carbon atoms by studying twisted trilayer graphene and show that the result can be applied to structures with different twists and number of layers. Our approach demonstrates how to extract fundamental information about interlayer coupling in a stack of two-dimensional crystals and can be applied to many other van der Waals interfaces.
-
determination of interatomic coupling between two dimensional crystals using Angle resolved photoemission spectroscopy
arXiv: Mesoscale and Nanoscale Physics, 2020Co-Authors: Joshua Thompson, Ding Pei, Han Peng, Hongya Wang, N Channa, Hailin Peng, Alexei Barinov, Niels B M SchroterAbstract:Lack of directional bonding between two-dimensional crystals like graphene or monolayer transition metal dichalcogenides provides unusual freedom in selection of components for vertical van der Waals heterostructures. However, even for identical layers, their stacking, in particular the Relative Angle between their crystallographic directions, modifies properties of the structure. We demonstrate that the interatomic coupling between two two-dimensional crystals can be determined from Angle-resolved photoemission spectra of a trilayer structure with one aligned and one twisted interface. Each of the interfaces provides complementary information and together they enable self-consistent determination of the coupling. We parametrize interatomic coupling for carbon atoms by studying twisted trilayer graphene and show that the result can be applied to structures with different twists and number of layers. Our approach demonstrates how to extract fundamental information about interlayer coupling in a stack of two-dimensional crystals and can be applied to many other van der Waals interfaces.
N Channa - One of the best experts on this subject based on the ideXlab platform.
-
determination of interatomic coupling between two dimensional crystals using Angle resolved photoemission spectroscopy
Nature Communications, 2020Co-Authors: Joshua Thompson, Ding Pei, Han Peng, Hongya Wang, N Channa, Hailin Peng, Alexei Barinov, Niels B M SchroterAbstract:Lack of directional bonding between two-dimensional crystals like graphene or monolayer transition metal dichalcogenides provides unusual freedom in the selection of components for vertical van der Waals heterostructures. However, even for identical layers, their stacking, in particular the Relative Angle between their crystallographic directions, modifies properties of the structure. We demonstrate that the interatomic coupling between two two-dimensional crystals can be determined from Angle-resolved photoemission spectra of a trilayer structure with one aligned and one twisted interface. Each of the interfaces provides complementary information and together they enable self-consistent determination of the coupling. We parametrise interatomic coupling for carbon atoms by studying twisted trilayer graphene and show that the result can be applied to structures with different twists and number of layers. Our approach demonstrates how to extract fundamental information about interlayer coupling in a stack of two-dimensional crystals and can be applied to many other van der Waals interfaces.
-
determination of interatomic coupling between two dimensional crystals using Angle resolved photoemission spectroscopy
arXiv: Mesoscale and Nanoscale Physics, 2020Co-Authors: Joshua Thompson, Ding Pei, Han Peng, Hongya Wang, N Channa, Hailin Peng, Alexei Barinov, Niels B M SchroterAbstract:Lack of directional bonding between two-dimensional crystals like graphene or monolayer transition metal dichalcogenides provides unusual freedom in selection of components for vertical van der Waals heterostructures. However, even for identical layers, their stacking, in particular the Relative Angle between their crystallographic directions, modifies properties of the structure. We demonstrate that the interatomic coupling between two two-dimensional crystals can be determined from Angle-resolved photoemission spectra of a trilayer structure with one aligned and one twisted interface. Each of the interfaces provides complementary information and together they enable self-consistent determination of the coupling. We parametrize interatomic coupling for carbon atoms by studying twisted trilayer graphene and show that the result can be applied to structures with different twists and number of layers. Our approach demonstrates how to extract fundamental information about interlayer coupling in a stack of two-dimensional crystals and can be applied to many other van der Waals interfaces.
Jin-yuan Qian - One of the best experts on this subject based on the ideXlab platform.
-
parametric analysis on throttling components of multi stage high pressure reducing valve
Applied Thermal Engineering, 2018Co-Authors: Fu-qiang Chen, Jin-yuan Qian, Wei Kang JiangAbstract:Abstract High pressure reducing valve (HPRV) is widely used for pressure and temperature control of heated steams in power plant and other related process engineering. The structures of throttling components inside HPRVs have important effects on the control performances. In this paper, a parametric study of throttling components in a multi-stage high pressure reducing valve (MSHPRV) is carried out, including the Relative Angle of inner and outer porous shrouded holes, the orifice plate thickness, the number of orifice plates and the diameter of plate holes. A numerical model is established to investigate internal flow and throttling characteristics with RNG k-e model, and it is validated by the theoretical flux calculation. The results show that, the Relative Angle set as 180° can obtain the largest decompression pressure when steam flows through porous shrouded valve core, while the turbulence degree is the lowest. Setting one orifice plate can decrease the turbulent dissipation rate. The plate thickness has less influence on throttling effects. For ensuring the outlet flux, plate holes with smaller diameters should be chosen with a better flowing property on thermodynamic parameters. The work can be referred by the design work of throttling components in MSHPRV and it can also benefit the further research on similar HPRVs.
