The vapor-liquid-solid(VLS) process has been widely used to growth different one-dimensional nanostructures.Among these nanostructures,some show periodic changes in morphology(e.g.diameter oscillation
随着环境污染和能源危机日渐严重，近年来热电材料备受关注[1]。较之无机热电材料，有机热电材料具有柔性、成本低、质轻等优点，引起了人们的极大关注。其中对于p型有机热电材料的研究相对较多，但对于n型热电材料却少有研究[2]。
Bose-Einstein Condensation is central to the concept and emerging of superconductivity in exciton mechanism1,while the ineradicable chemical potential is a hindering factor for the coupling of exciton
Plasmonic materials with chiral structures become chiroptically active,and produce chiral plasmons under irradiative excitation.It is fundamentally necessary to investigate the interaction of chiral p
A major challenge in nanoparticle self-assembly is programming the large-area organization of a single type of anisotropic nanoparticle into distinct superlattices with tunable packing efficiencies.Th
基于考虑解吸、扩散和滑移作用的页岩气非线性渗流理论模型,构建了以压力为自变量的页岩气非线性渗流的三维有限元方程.通过一个忽略解吸效应的页岩气稳定渗流的算例和一个考虑解吸附效应的页岩气非稳定渗流的算例,求解井筒附近压力场,及压力和气井产量随时间的变化,并与文献中的理论解进行对比,验证数值方法的合理性.结果表明,本文提供的页岩气非稳定渗流数值计算方法,其结果与理论解吻合,且收敛性好,可用于页岩气开发中
本文针对带柔性附件航天器的刚柔耦合动力学模型实现了一种可靠且高效的数值求解方法.首先,利用模态叠加法对耦合动力学方程中的柔性附件变形进行解耦,然后再采用Newmark积分法进行时间域内的积分,并在每一个时间步内利用牛顿迭代法进行迭代.若干测试算例验证了本文求解算法的正确性和有效性.
本文对某核电站反应堆压力容器在设计、紧急以及事故三种工况下的结构应力进行了分析,并依据RCC-M核电规范的验收标准进行了评价,最后得出结论:该反应堆压力容器在上述三种工况下均满足强度条件,能够保持结构完整性.
Here,we reported here an integrated Fe:Ni(OH)2/NF electrode for highly efficient water oxidation.
Due to the “ligand effect” and “ensemble effect”,incorporating phosphorus into nickel metal is a promising strategy to prepare electrocatalyst for hydrogen evolution reaction(HER).