Rare earth chalcogenides provide a great platform to study exotic quantum phenomena such as superconductivity and charge density waves. Among various interesting properties, the coupling between magnetism and electron...
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We demonstrate for the first time ultrafast laser welding in the silicon–metal and silicon–silicon configurations, with focused infrared picosecond pulses. This achievement relies on accurate characterizations of fi...
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Recent investigations have advanced the understanding of how structure-property relationships in ferromagnetic metal alloys affect the magnetization dynamics on nanosecond time-scales. A similar understanding for magn...
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Cauchy’s stress tensor, in the most generalized form, is known to be in two parts: a pressure plus octahedral shear stresses. Shear stress thermodynamics in pressurized and sheared systems are used to describe the ph...
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Mechanically and electrochemically stable all-solid-state supercapacitors are of great interest in the field of wearable and portable electronic devices. However, when conventional liquid or gel electrolytes are used ...
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We report the first observation of cascaded forward stimulated Brillouin scattering in a microresonator platform. We have demonstrated 25 orders of intramodal Stokes beams separated by a Brillouin shift of 34.5 MHz at...
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No-precious bifunctional catalysts with high electrochemical activities and stability were crucial to properties of rechargeable zinc-air ***,LaNiO3 modified with Ag nanoparticles(Ag/LaNiO3)was prepared by the co-synt...
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No-precious bifunctional catalysts with high electrochemical activities and stability were crucial to properties of rechargeable zinc-air ***,LaNiO3 modified with Ag nanoparticles(Ag/LaNiO3)was prepared by the co-synthesis method and evaluated as the bifunctional oxygen catalyst for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER).Compared with LaNiO3,Ag/LaNiO3 demonstrated the enhanced catalytic activity towards ORR/OER as well as higher limited current density and lower onset ***,the potential gap between ORR potential(at-3 mA cm^-2)and OER potential(at 5 mA cm^-2)was 1.16 *** maximum power density of the primary zinc-air battery with Ag/LaNiO3 catalyst achieved 60 mW cm^-***,rechargeable zinc-air batteries operated reversible charge-discharge cycles for 150 cycles without noticeable performance deterioration,which showed its excellent bifunctional activity and cycling stability as oxygen electrocatalyst for rechargeable zinc-air *** results indicated that Ag/LaNiO3 prepared by the co-synthesis method was a promising bifunctional catalyst for rechargeable zinc-air batteries.
The polar antiferromagnet Co2Mo3O8 was recently reported as a new multiferroic material exhibiting remarkable second-order magnetoelectric (ME) coupling effect while no other metamagnetic transitions occurred at low m...
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The polar antiferromagnet Co2Mo3O8 was recently reported as a new multiferroic material exhibiting remarkable second-order magnetoelectric (ME) coupling effect while no other metamagnetic transitions occurred at low magnetic field. Herein, we have investigated the ME phenomena under high magnetic field (up to 60 T) in Co2Mo3O8 single crystals and observed unique ME response associated with the changes in the hidden magnetic moment on the honeycomb lattice. Two spin-flop transitions are unambiguously defined at Hc1∼27T and Hc2∼31T under H along the c axis at 1.7 K, accompanied by two successive colossal changes of electric polarization. The results on the anisotropy of magnetoelectricity as well as the angular-dependent polarization are well consistent with the ME tensor prediction, providing a better approach to understand the evolution of magnetic structures under high magnetic field. Therefore, the hidden magnetic transitions and distinctive magnetoelectricity provide a unique platform on which the ME coupling mechanism in the presence of rich magnetic phase transitions can be explored in this 238 family.
Applications of natural fiber-based composites continue to grow in many industries as sustainability and recyclability of products gain popularity. Kenaf, Jute, Coir, and Flax based bio-composites have steadily gained...
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ISBN:
(纸本)9781934551417
Applications of natural fiber-based composites continue to grow in many industries as sustainability and recyclability of products gain popularity. Kenaf, Jute, Coir, and Flax based bio-composites have steadily gained traction as an alternative to synthetic based fiber composites. Giant ragweed (Ambrosia trifida), a common weed, has shown promise as another biological source of fiber for composite reinforcement. Unfortunately, the hydrophilic nature of ragweed is incompatible with most nonpolar polymers leading to weak interfacial adhesion between the fiber and matrix. However, treatment of ragweed fibers post-harvest can alleviate incompatibility, yielding a fiber matrix composite with competitive strength and stiffness. The increasing availability of sustainable composites is crucial as the world continues to distance itself from oil-based products. Therefore, this study will determine the mechanical benefits of using a silane treated ragweed fiber within a polylactic acid (PLA) polymer matrix. The novel composite will be compared to commercially available bio-composites reinforced with bamboo fibers. Mechanical testing will be performed under tensile, and flexural loading. In addition, composites will be examined using scanning electron microscopy (SEM) to determine matrix fiber adhesion and surface effects of silane treatment. Energy Dispersive X-ray Spectroscopy (EDAX) is used to determine the treatments density on the sample surface. The composites coefficient of thermal expansion will be compared using thermomechanical analysis (TMA). Copyright 2022. Used by the Society of the Advancement of Material and Process engineering with permission.
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