偶极子
辐射传输
电场
物理
无线电源传输
磁偶极子
电介质
有效辐射功率
磁场
计算物理学
介电常数
近场和远场
辐射
电偶极矩
激发态
原子物理学
领域(数学)
功率(物理)
光学
光电子学
量子力学
数学
纯数学
作者
Esmaeel Zanganeh,Andrey B. Evlyukhin,Andrey E. Miroshnichenko,Mingzhao Song,Elizaveta Nenasheva,Polina Kapitanova
标识
DOI:10.1103/physrevlett.127.096804
摘要
The existence of classical nonradiating electromagnetic sources is one of the puzzling questions to date. Here, we investigate radiation properties of physical systems composed of a single ultrahigh permittivity dielectric hollow disk excited by electric or magnetic pointlike dipole antennas, placed inside the inner bore. Using analytical and numerical methods, we demonstrate that such systems can support anapole states with total suppression of far-field radiation and thereby exhibit the properties of electric or magnetic nonradiating sources. It is shown that the suppression of the far-field radiated power is a result of the destructive interference between radiative contributions of the pointlike dipole antennas and the corresponding induced dipole moments of the hollow disk. The experimental investigation of the nonradiating electric source has been performed to confirm our theoretical predictions. Our results pave the way to create and realize compact nonradiative sources for applications in modern wireless power transfer systems, sensors, RFID tags, and medical technologies.Received 24 February 2021Accepted 20 July 2021DOI:https://doi.org/10.1103/PhysRevLett.127.096804© 2021 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasCloakingCondensed Matter, Materials & Applied Physics
科研通智能强力驱动
Strongly Powered by AbleSci AI