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| 1 | Microwave-induced high-energy sites and targeted energy transition promising for efficient energy deployment显示文摘Diverse interactions between microwaves and irradiated media provide a solid foundation for identifying novel organization pathways for energy flow.In this study,a high-energy-site phenomenon and targeted-energy transition mechanism were identified in a particular microwave heating(MH)process.Intense discharges were observed when microwaves were imposed on irregularly sized SiC particles,producing tremendous heat that was 8-fold the amount generated in the discharge-free case.Energy efficiency was thereby greatly improved in the electricity-microwaves-effective heat transition.Meanwhile,the dispersed microwave field energy concentrated in small sites,where local temperatures could reach 2000℃–4000℃,with the energy density reaching up to 4.010^(5) W/kg.This can be called a high-energy site phenomenon which could induce further processes or reactions enhancement by coupling effects of heat,light,and plasma.The whole process,including microwave energy concentration and intense site-energy release,shapes a targeted-energy transition mechanism that can be optimized in a controlled manner through morphology design.In particular,the discharge intensity,frequency,and high-energy sites were strengthened through the fabrication of sharp nano/microstructures,conferring twice the energy efficiency of untreated metal wires.The microwave-induced high-energy sites and targeted energy transition provide an important pathway for high-efficiency energy deployment and may lead to promising applications. | Jing SUN Guanqun YU Kui AN Wenlong WANG Biao WANG Zhenyu JIANG Chenggong SUN YanpengMAO Xiqiang ZHAO Zhanlong SONG | 2022 | Frontiers in Energy2022，16，6： | 0 |
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