Results 11 to 20 of about 4,690 (128)
Rare Metals, Volume 42, Issue 1, Page 234-243, January 2023., 2023 Graphical abstract Abstract The heating and helicity effects induced by circularly polarized laser excitation are entangled in the helicity‐dependent all‐optical switching (HD‐AOS), which hinders understanding the magnetization dynamics involved. Here, applying a dual‐pump laser excitation, first with a linearly polarized (LP) laser pulse followed by a
Guan‐Qi Li +9 more
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Conservation Biology, Volume 36, Issue 4, August 2022., 2022 Abstract As ecological data and associated analyses become more widely available, synthesizing results for effective communication with stakeholders is essential. In the case of wildlife corridors, managers in human‐dominated landscapes need to identify both the locations of corridors and multiple stakeholders for effective oversight.
Jay M. Schoen +13 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Sodium‐ion batteries (SIBs) have emerged as promising candidates for large‐scale energy storage due to their cost‐effectiveness and resource abundance. However, challenges such as sluggish ion diffusion kinetics, structural degradation, and interfacial instability hinder their practical applications.
Yunze Wang +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Moisture‐enabled electricity generation technology offers a new paradigm for sustainable energy harvesting, but its practical applications are still limited by issues such as low output power and insufficient long‐term stability. In this paper, an asymmetric sandwich‐structured hydrogel moist–electric generator (SSHMEG) with an ion ...
Peng Chen +7 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
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT High‐power piezoelectric ceramics which have a wide operating temperature range are essential for sensor and actuator applications in extreme conditions. However, their development is fundamentally hindered by the inherent trade‐off among key parameters (TC, d33, Qm).
Rui Yan +10 more
wiley +1 more source
The Design of D-Class Power Amplifier and Matching Circuit [PDF]
, 2014 是针对20 k~30 k频段的水声换能器设计d类功率放大器和匹配电路,PWM电路相对线性电路具有效率高、尺寸小等优点,所以d类功放一般选用PWM调制,d类功放由三角波发生器、比较器、功率管以及保护模块组成,实现高效率、低失真的功率放大。d类功放的输出一般都要通过一个低通滤波器来滤除高频信号,来还原低频信号。由于水声换能器是容性负载,会产生很大的无功功率,因此需要设计匹配电路,匹配包括调谐和阻抗匹配。匹配电路的加入能大大减少水声换能器的无功功率,进而提高功放的效率,使水声换能器在工作频段内能稳定工作 ...
程恩, 袁飞, 陈华宾, 陈士广
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Tellurium (Te), emerging as a promising alternative to sulfur (S) and selenium (Se), offers significant advantages for potassium (K) ion storage due to its comparable theoretical volumetric capacity (2619 mAh cm−3) and higher electronic conductivity (∼102 S m−1), which promotes rapid charge transfer and improves reaction kinetics.
Sung Woo Cho +7 more
wiley +1 more source
Gaoya dianqi, 2018 针对动态电阻法可在不拆解SF6断路器灭弧室前提下获得其触头状态的特点,文中在现有动态电阻测试方法、数据处理方法和电寿命诊断模型基础上,提出一套完整的SF6断路器动态电阻测量、分析与诊断系统,为现场检修人员使用动态电阻法进行断路器状态检修提供了参考流程与依据。系统包括动态电阻测试硬件、SF6断路器动态电阻分析系统、SF6断路器电寿命诊断系统,规定由动态电阻分析系统配合测试仪联机操作试验,简化并标准化动态电阻测试过程,实时获得动态电阻曲线进行查看与分析,优化电寿命诊断系统进一步计算触头状态诊断参数（电阻 ...
蓝磊 +4 more
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Gaoya dianqi, 2023 随着当今时代电力电子技术的发展，SiC MOSFET在高频、高温、高压以及大电流等场合中得到广泛应用，然而，由多管并联所导致的不均流问题成为了当下SiC MOSFET模块广泛应用中的一大阻碍。针对这一问题，文中提出一种基于动态栅电阻的SiC MOSFET模块并联均流方法，其主要原理是通过利用SiC MOSFET开关瞬间漏极电流在源极寄生电感上感应出的电压来检测电流，并通过动态调节栅极驱动电阻来实现并联模块的电流同步。最后，通过利用多脉冲实验对文中所提出的均流策略的可行性及优势进行了实验验证。结果表明 ...
张瑜, 田鸿昌, 文阳
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