Results 51 to 60 of about 15,998 (164)

Effects of metal film on transmission characteristics of single-dielectric-slab THz waveguide [PDF]

open access: yes, 2016
The effects of a symmetrical metal film on the transmission characteristics of TM mode in the thicker single-dielectric-slab THz waveguide is analyzed theoretically.
Hong Su, SU   +3 more
core  

Tunable Redox‐Active Anhydride‐Based Linear Polymer as Organic Cathodes for Chemically Self‐Charging Aqueous Zinc–Ion Batteries

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Chemically self‐charging aqueous zinc‐ion batteries (AZIBs) have emerged as promising candidates for energy storage technologies owing to their environmental autonomy and structural simplicity. Nonetheless, the self‐charging performance is significantly compromised by the limited potential difference between cathodes and oxygen, as well as the
Yan Wang   +5 more
wiley   +1 more source

不均匀电场SF6/CF4混合气体的光谱实验研究

open access: yesGaoya dianqi, 2016
文中通过对SF6/CF4混合气体在针板电极电场条件下,采用光谱测量法分析SF6气体含量为20%80%、压强为0.10.3 MPa及电极间距在410 mm下的气体击穿等离子体导电通道的发射光谱。利用多谱线斜率法及Stark展宽法计算SF6/CF4混合气体完全击穿的等离子体通道中电子温度、电子数密度等参数,建立等离子体导电通道的电子温度、电子数密度与气体压强、电极间距的关系。研究表明:当电极间距为4 mm时,随着混合气体压强的升高等离子体电子温度下降、电子数密度上升,ρSF6为80 ...
钟建英   +5 more
doaj  

太阳风局部加速的磁流体力学过渡特征 [PDF]

open access: yes, 1981
本文讨论了轴对称磁力线管中太阳风从亚声速和亚阿尔文速度加速到超声速和超阿尔文速度的过程。考虑到流动和场的二维效应以后,除去临界声速线 M~2=1 以外,还有临界阿尔文速线 M_A~2=1 和M~2+M_A~2=1。这时,磁力线管中存在三次过渡,使磁流体力学方程组的类型从椭圆型变为双曲型,再变为椭圆型,最后变为双曲型。由于日冕中的典型声速和阿尔文速度具有相同的量级,而且人们对磁力线管的急剧膨胀很有兴趣,这就需要讨论二维磁流体力学方程组的自(冫合)解 ...
胡文瑞
core  

Amphiphilic Block Copolymer‐Functionalized VO2 Nanocomposites for Smart Waterborne Polyurethane Coatings

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Aqueous vanadium dioxide (VO2)‐based smart thermal insulation coatings represent a viable strategy to decrease building energy consumption and advance sustainable development goals. However, the inherent instability and limited compatibility with polymer matrices of VO2 hinder its widespread application.
Xiuxian Zhao   +9 more
wiley   +1 more source

Preparation of Indium Tin Oxide Nanopowders and Study of their Surface Plasmon Resonances and Applications as Heat Isolation Materials [PDF]

open access: yes, 2015
氧化铟锡(ITO)具有优异的高电导和高可见光透光率性质,已广泛应用于透明导电氧化物(TCO)薄膜材料。有关ITO材料的研究,大多集中于其高载流子浓度导致的高电导性质。虽然ITO纳米粉体由于其高载流子浓度,因此具有高的近红外吸收特性,作为热阻隔材料有应用潜力,但,ITO热阻隔材料的相关研究,主要是成膜工艺、膜层性能等方面;而对于关键的基础问题,即,ITO纳米粉体材料的基础问题,尤其是等离子共振(SPR)吸收特性方面的研究尚缺。等离子共振吸收的影响因素,理论上虽然给出了指导,但,针对ITO纳米粉体 ...
脱永峰
core  

Bidentate Coordination by Graphene Oxide‐Enhanced γ‐Cyclodextrin for Synergistic Solvation and Stabilization of the Zn Anode

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT With the rapid development of the energy storage industry, aqueous zinc‐ion batteries (AZIBs) have attracted considerable attention in the field of energy storage because of their inherent advantages, thereby emerging as a promising research direction with significant potential.
Lingjiao Fu   +8 more
wiley   +1 more source

Separation and Determination of As/Se Species by Chromatography and Inductively Coupled Plasma Mass Spectrometry [PDF]

open access: yes, 2015
砷和硒是两种与人类生活息息相关的元素,虽然两种元素在生命体系中所起的作用不同,但它们的毒性、生理活性、代谢机理等均与其存在形态密切相关,因此砷、硒两种元素一直是元素形态分析的研究热点之一。 元素形态分析是识别或测定待测样品中一种或多种元素的一个或多个化学形态的分析过程,是目前环境化学、生态毒理学、分析化学等学科的研究热点。经过三十几年的发展,将各类色谱分离技术与元素特效检测器联用,是目前解决元素形态分析最常用的分析方法。其中高效液相色谱(HPLC)与电感耦合等离子体质谱(ICP-MS)联用技术 ...
张洋
core  

Mechanism research and far/near field application of asymmetric light reflectance based on LSP [PDF]

open access: yes, 2016
随着信息化社会的迅速发展,人们对信息存储容量和传递效率的要求也日益提高。而局域表面等离子体(LSPs)由于具有独特的激发、传播以及局域场增强的特性,使其在光电子器件的微型化和集成化上有显著的优势,应用领域涉及太阳能电池、光电探测器、LED、荧光增强、表面增强拉曼散射、环境传感器、纳米激光器、纳米天线等。我们可以通过改变金属纳米结构的大小、形状以及周围介质环境等因素,在纳米尺度上实现光学信号的有效调控。在绝大多数应用中,LSPs均存在于空气/介质或介质/介质的界面处,因此 ...
潘伟
core  

Technology development in nano-sized photocatalyst powder preparation technologies [PDF]

open access: yes, 2006
Nano-sized semiconductor powders for use as photocatalysts have great potential in environmental and energy engineering applications. The photocatalytic activity of photocatalyst is significantly affected by preparation process since the crystalline ...
Leung, DYC, Leung, MKH, Ni, M
core  

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