Results 11 to 20 of about 6,612 (108)

Large Cation‐Induced Lattice Distortion in Carbon‐Based High‐Entropy Oxides: Spin‐State Engineering and Broadband Microwave Absorption

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT High‐entropy oxides (HEOs) are promising for microwave absorption but suffer from a trade‐off between impedance matching and attenuation, often requiring high filling ratios (> 50 wt%). Herein, we propose a “lattice‐spin” dual‐regulation strategy by introducing giant‐radius Bi into a single‐phase HEO solid solution.
Junwei Zhang   +11 more
wiley   +1 more source

Anisotropic MoS2/SiC Aerogels: A Multifunctional Platform for Broadband Electromagnetic Stealth and Thermal Management

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT To address the demand for high‐temperature stability, broadband strong absorption, and multifunctional integration of electromagnetic wave absorbing materials in complex service environments, lightweight molybdenum disulfide (MoS2) decorated silicon carbide (SiC) nanofiber composite aerogels with a directional layered interconnected structure ...
Zhi Song   +4 more
wiley   +1 more source

微波辅助提取川楝素的方法研究

open access: yes四川大学学报. 自然科学版, 2005
利用微波效应,以水为溶剂提取川楝素.研究了微波功率、微波占空比、微波作用时间、溶剂用量等因素对川楝素提取率的影响.确定最佳的提取工艺条件为:微波功率300W,微波作用时间10min,固液比为1∶30,微波占空比50%.提供了一条以水为溶剂、微波为热源提取川楝素的绿色化学途径.
唐英   +6 more
doaj  

Synergistic Modulation of Magnetic and Dielectric Properties via La‐V Co‐Substitution in Barium Hexaferrite for Advanced Millimeter‐Wave Absorption

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT The growing deployment of high‐frequency electronic systems has intensified the demand for high‐performance microwave absorption materials. In this work, we developed La‐V co‐substituted barium hexaferrites, Ba1‐xLaxFe11.9V0.1O19 (BLFVO), via a sol‐gel route.
Zhihui Yang   +7 more
wiley   +1 more source

微波辐射Fenton试剂处理醇酮废水的研究

open access: yesGongye shui chuli, 2009
采用微波辐射Fenton试剂处理醇酮废水,分别考察了双氧水用量、微波辐射时间、微波辐射功率和pH等因素对醇酮废水处理效果的影响。确定在微波功率为480W、微波辐射时间5min、双氧水(质量分数6%)用量为2. 5mL、FeSO4用量为0.07g和pH=1的条件下,处理50mL醇酮废水效果最佳,其COD去除率达到97.86%。结果表明,微波辐射Fenton试剂处理该废水效果明显,不会对环境造成二次污染。
关晓彤   +4 more
doaj   +2 more sources

Polarization Loss Enhancement Induced by Interfacial Contact Regulation Strategy to Develop Nickel Silicate/Reduced Graphene Oxide for Microwave Absorption and Corrosion Resistance

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Interface polarization enhancement and impedance matching optimization are the keys to improving the comprehensive performance of microwave absorbing materials (MAMs). Herein, a green synthesis strategy integrating sacrificial template self‐etching, hydrothermal reaction, and annealing treatment is proposed to successfully fabricate urchin ...
Zhenzhen Tian   +8 more
wiley   +1 more source

Manipulating Terminal Bonds of Ti3C2Tx MXene for Highly Efficient Microwave Absorption and Photothermal Conversion

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT MXenes have been widely investigated as microwave absorption (MA) materials because of their unique properties. This study introduces a terminal bond manipulation strategy to enhance charge transfer and polarization in Ti3C2Tx, optimizing its MA performance.
Xiang Fang   +8 more
wiley   +1 more source

Pyrolysis‐Engineered Fe/Mn‐ZIF Catalysts: Balancing Activity, Selectivity, and Stability for the Oxygen Reduction Reaction

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Metal oxide‐based catalysts for oxygen reduction reaction (ORR) have drawn great attention in recent years. However, it remains technically challenging for the precise regulation of the overall performance due to the trade‐off effect among the activity, selectivity, and stability of electrocatalysts. Herein, a balancing strategy to control the
Haoran Ma   +7 more
wiley   +1 more source

微波辐射对妊娠大白鼠致畸敏感期的测定

open access: yes四川大学学报. 自然科学版, 1983
近年来,我们在微波男性节育方面作了一些工作.为了进一步探索微波致畸的特异性,在1980年我们进行了微波对妊娠大白鼠致畸敏感期的测定.为使用微波时的安全提供参考。材料和方法一、本实验微波源为国产WL—200型微波理疗机.用2450MHz,100mW/cm2照射18分钟,被照射动物距辐射器15—20厘米。妊娠大鼠为全身照射,照射后平均肛温为41—42.5℃.微波辐射强度系用RCQ—1型微波漏场仪直接测得.
雍慧仪, 游育信, 钟英, 王方元
doaj  

Laser‐Driven Halide Exchange and High‐Resolution Multicolor Patterning of Perovskite Films

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Translating the excellent properties of metal halide perovskites (MHPs) into practical flexible optoelectronic devices requires high‐resolution multicolor patterning techniques that are compatible with post‐fabrication processing. However, such a capability has remained elusive.
Shu Yang   +6 more
wiley   +1 more source

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