Results 21 to 30 of about 239,109 (153)
Investigating the Origin of Topological‐Hall‐Like Resistivity in Zn‐Doped Mn2Sb Ferrimagnet
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Skyrmions and other chiral spin textures have been extensively studied as potential building blocks for novel spintronic devices. Hall‐resistivity anomalies that deviate from magnetization scaling, known as the topological Hall effect, have been widely employed as evidence for the presence of chiral spin textures in magnetic materials. However,
BoCheng Yu +9 more
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Bioinspired 3D‐Printed NiTi Metamaterials With Bivalve‐Like Crossed‐Lamellar Structures
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Metamaterials demonstrate unique mechanical properties and functional performance owing to their distinctive topological spatial structures. In this study, by mimicking the natural Saxidomus purpuratus shell, bioinspired crossed‐lamellar architectures with interlamellar apex angles ranging from 60° to 150° were designed and fabricated in NiTi ...
Yu Chen +9 more
wiley +1 more source
Gaoya dianqi, 2022 通过传感器阵列和相应的算法减小乃至消除外部干扰电流产生的串扰误差是磁传感器电流测量技术研究中的一个重要问题。文中在对比了现有拓扑结构后，提出了一种双层环形传感器阵列拓扑结构，并对其测量误差进行了仿真计算与实验测量。仿真计算中对比了干扰电流的大小、相位、距离，以及被测导体偏离阵列中心等因素对测量误差的影响。利用8个高灵敏度的隧道磁阻（tunnel magnetoresistance,TMR）元件制作了电流传感器，并在单导体干扰和多导体干扰下进行了测试，实验结果表明其平均误差为1.79 ...
周秀 +6 more
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Fermi Surface Structure Revealed by Quantum Oscillations in Half‐Heusler Semimetal LuAuSn
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The Fermi surface structure in the half‐Heusler semimetallic compound LuAuSn was systematically investigated using quantum oscillation studies of high‐quality single crystals and first‐principles calculations. Clear bulk quantum oscillation signals were observed for multiple complementary physical properties, including magnetization, Hall ...
Yue Lu +12 more
wiley +1 more source
Dianci bileiqi, 2017 海上风电场内部真空断路器开断时易发生重燃,产生重燃过电压危害其安全运行。海上风电场集电线路拓扑结构会影响断路器重燃过电压。比较几种常见拓扑结构优缺点,分析断路器重燃机理,利用ATP-EMTP搭建海上风电场系统模型,讨论拓扑结构对重燃过电压的影响。结果表明断路器发生重燃的线路末端产生过电压最大;对于不同拓扑结构的系统参数,星形拓扑结构产生的过电压更小。研究结果可从过电压防护角度为海上风电场集电系统设计提供参考。
程彧, 周歧斌, 边晓燕
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Giant Tunability of Individual Magnetic Skyrmion Size via an Oscillating Local Magnetic Field
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Magnetic skyrmions hold great promise as memory and computing elements in future spintronic devices. Despite the demonstration of various devices, techniques for addressable and high‐precision manipulation of individual skyrmions remain scarce.
Cai‐Hong Xie +13 more
wiley +1 more source
Gaoya dianqi, 2017 文中引入动态拓扑结构思想对接地网的未知拓扑结构进行重构,得到一系列满足一定距离阀值dij的拓扑可行解,再通过邻居互连规则进行筛选、优化从而得到接地网的最优拓扑结构。为验证重构效果,笔者对一个重构的小型接地网进行了分析,结果表明,在满足接地网导体等间距分布的前提下,当接地引下线发生偏移时,重构所得可及节点电压值的均方差更小,同时由异常的节点电压值还可推测出异常的接地引下线。
刘渝根 +3 more
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Guangtongxin yanjiu, 2001 文章基于光码分复用编 /解码技术 ,阐述了光纤延迟线时域编 /解码器和利用光栅的频域编 /解码器 ;提出了一种两层网络的拓扑结构 :在 OCDMA星形局域网拓扑结构的基础上构造 ...
方晓惠 +4 more
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Gaoya dianqi, 2023 随着直流输电网规模的扩大，同一输电母线上连接的输电线路增加，若每条线路分别配置直流断路器，造价过高，因此多端直流断路器的研制十分必要。文中通过对现有DCCB拓扑进行分析，总结出理想的DCCB应该具备的特性，并提出了基于电容换相的多端直流断路器拓扑(multi-terminal DC circuit breaker topology based on capacitor commutation,CC-MDCCB)。该断路器拓扑通过对电容换相单元的控制，确保了机械开关分闸过程无需耐受高电压 ...
秦逸帆 +7 more
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四川大学学报. 自然科学版, 1997 应用连续格理论来研究半连续函数空间，主要结果是：（１）拓扑空间Ｘ到单位区间［０，１］的下（上）半连续函数空间Ｌ（Ｘ）（Ｕ（Ｘ））的Ｗｉｊｓｍａｎ收敛是拓扑的，当且仅当Ｘ局部紧．这时，诱导拓扑作为连续格与Ｌ（Ｘ）上的Ｌａｗｓｏｎ拓扑一致；（２）具有Ｗｉｊｓｍａｎ拓扑（对偶Ｌａｗｓｏｎ拓扑）的Ｘ到［０，１］的上半连续函数空间Ｕ（Ｘ），是具有Ｋｕｒａｔｏｗｓｋｉ收敛的拓扑（对偶Ｌａｗｓｏｎ拓扑）的闭集构成的超空间２Ｘ×［０，１ ...
张德学
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