The Fifth International Conference on Materials and Environmental science (ICMES20221), is an interdisciplinary platform to promote a multi-sectoral and collaborative approach in the field of development of new and in...
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Inadequate or erroneous weather predictions have a great impact on wind turbine energy output. Certain weather fluctuations and interruptions affect the efficient operation of wind turbines. Short-term weather predict...
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Quantum geometric tensor, including a symmetric real part defined as quantum metric and an antisymmetric part defined as Berry curvature, is essential for understanding many phenomena. In this study, we investigated t...
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Quantum geometric tensor, including a symmetric real part defined as quantum metric and an antisymmetric part defined as Berry curvature, is essential for understanding many phenomena. In this study, we investigated the photogalvanic efect of semiconductors with time-reversal-invariant and spatial inversion symmetries using the quantum kinetic equation. We concluded that the integral of the symmetric(antisymmetric) part of quantum geometric tensor on the equal energy surface in momentum space, satisfying the resonance condition, is related to the generation rate of carriers in semiconductors under linearly(circularly) polarized light. Under additional bias voltage, the dc photocurrent is proportional to the bias voltage. Our study provided an alternative interpretation for the photogalvanic efect in the view of quantum geometric tensor. Additionally, it classified the intrinsic diference between linearly and circularly polarized optical fields.
By filling in missing values in datasets, imputation allows these datasets to be used with algorithms that cannot handle missing values by themselves. However, missing values may in principle contribute useful in...
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The biological metal-organic framework (Bio-MOF) is utilized to modify the carbonaceous electrode for the vanadium redox flow batteries. The microwave solvothermal method prepared the cobalt-based Bio-MOF on a graphit...
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For realizing high-performance GaN power-switching devices, establishing an ion-implantation (I/I) technique to control conductivity type and conductivity in designated segments of GaN is an urgent issue. However, fab...
For realizing high-performance GaN power-switching devices, establishing an ion-implantation (I/I) technique to control conductivity type and conductivity in designated segments of GaN is an urgent issue. However, fabricating p-type GaN by Mg doping, especially p-GaN:Mg formation by I/I, has long been a tough job. The difficulty in Mg I/I arises from the fact that high concentration (>10 19 cm -3 ) divacancies comprising a Ga vacancy (V Ga ) and a nitrogen vacancy (V N ), namely V Ga V N , or trivacancies [V Ga (V N ) 2 ] are introduced by Mg I/I and they agglomerate into (V Ga V N ) 3 clusters by a post-implantation annealing (PIA) [1]. Because such vacancy complexes have been assigned as deleterious nonradiative recombination centers (NRCs) [2], gross amount of vacancies should be minimized and therefore suppressing gross I/I-induced damage is indispensable.
The implementation of titanium dioxide (TiO2) as a photocatalyst material in hydrogen (H2) evolution reaction (HER) has embarked renewed interest in the past decade. Rapid electron-hole pairs recombination and wide ba...
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Lattice-strain engineering has demonstrated its capability to influence the electronic structure and catalytic performance of ***,we present a facile method for inducing thermal strain in cobalt/molybdenum nitride rod...
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Lattice-strain engineering has demonstrated its capability to influence the electronic structure and catalytic performance of ***,we present a facile method for inducing thermal strain in cobalt/molybdenum nitride rod-shaped structures(denoted Co/Mo_(2)N)via ammonia-assisted reduction,which effectively modulating the HER *** optimized Co/Mo_(2)N-500,characterized by 3%tensile lattice strain,demonstrates exceptional HER activity with lower overpotentials of140 mV and 184 mV at high current density of 1000 mA cm^(-2)in alkaline freshwater and seawater electrolytes,***/Mo_(2)N also exhibits excellent long-term durability even at a high current density of 300 mA cm^(-2),surpassing its counterparts and benchmark Pt/C *** functional theory calculations validate that the tensile strain optimizes the d-band states,water dissociation,and hydrogen adsorption kinetics of the strained Mo_(2)N in Co/Mo_(2)N,thereby improving its catalytic *** work provides valuable insights into controlling lattice strain to develop highly efficient electrocatalysts towards advanced electrocatalytic applications.
Abstract: The present work reported the eco-benevolent fabrication of cadmium oxide nanoparticles (CdO NPs) utilizing the leaf extract of Polyalthia longifolia as the biofuel for the first time. CdO NPs were fabricate...
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Multiferroics are known to be classified into two types. However, type-I lacks sufficient magnetoelectric coupling and type-II lacks sufficient electric polarization, making both practically difficult. In this work, w...
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