【摘 要】
：
As the growing criterion of electromagnetic wave (EMW)absorption materials,micro/nano-scale magnetic materials are drawing more and more attention for their unique features compared to bulky absorbers.Generally,the complex permeability of micro/nano-scale
【机 构】
：
Institute of Advanced Materials and Flexible Electronics (IAMFE),School of Chemistry and Materials S
论文部分内容阅读
As the growing criterion of electromagnetic wave (EMW)absorption materials,micro/nano-scale magnetic materials are drawing more and more attention for their unique features compared to bulky absorbers.Generally,the complex permeability of micro/nano-scale magnetic absorbers varies in a relatively narrow range,whatever for the storage of magnetic energy or the dissipation of magnetic energy.If so,how the small variation of permeability affects the ultimate performances is still unclear.Here,a strategy of electromagnetic parameters regulation for the magnetic materials is applied to understand the loss contribution in micro/nano-scale magnetic absorbers.After analyzing the evolution of electromagnetic maps of ten ferrosoferric oxide samples,it can be found that the dissipation contribution of permeability for magnetic materials is weaker than that of permittivity,in spite of its significant role in determining the impedance matching characteristics.In summary,this work systematically explores the loss contribution in micro/nano-magnetic absorbers for the first time,which is of great importance in designing and optimizing the microwave absorption properties of magnetic absorbers.
其他文献
Tumor cells undergoing immunogenic cell death (ICD) have emerged as an in situ therapeutic vaccine helping to activate a persistent anti-tumor response.Several chemotherapeutic agents have been demonstrated to induce ICD,however accompanied with severe ad
With the increasing demand for smart wearable clothing,the textile piezoelectric pressure sensor (T-PEPS) that can harvest mechanical energy directly has attracted significant attention.However,the current challenge of T-PEPS lies in remaining the outstan
External electric field and interlayer twist introduce diverse changes in their confined electronic states of bilayer graphene quantum dots.Using a quantum-dot model,the band gaps of twisted bilayer graphene in finite sizes of about 1.4-2.4 nm with varyin
Sodium ion batteries (SIBs) are alternatives to lithium ion batteries (LIBs),and offer some significant benefits such as cost reduction and a lower environmental impact;however,to compete with LIBs,further research is required to improve the performance o
Impeding high temperature sintering is challengeable for synthesis of carbon-supported single-atom catalysts (C-SACs),which requires high-cost precursor and strictly-controlled procedures.Herein,by virtue of the ultrastrong polarity of salt melts,sinterin
Considerable smoke and toxic volatiles generation has compromised the application of thermoplastic polyurethane (TPU) and caused a great threat to human life.Here,nano-MgFe layered double hydroxide (MgFe-LDH) with uniform particle size was synthesized to
Bufalin is efficacious in treating various tumors,however,the clinical application of which is restricted by the myocardial toxicity.Developing a smart synergetic delivery system is widely considered as a promising therapeutic strategy.To address this iss
It has been of interest in seeking electrocatalysts that could exercise equally high-efficient and durable hydrogen evolution upon nonselective electrolytes in both acidic and alkaline environments.Herein,we report a facile strategy to fabricate cobalt tu
Electrochemical conversion reactions provide more selections for Na-storage materials,but the reaction suffers from low reversibility and poor cyclability.Introducing an electrochemically inactive component is a common strategy,but the effect is quite lim
Nanowires require surface passivation due to their inherent large surface to volume ratio.We investigate the effect of embedding InP nanowires in different oxides with respect to surface passivation by use of electron beam induced current measurements ena