Angular momenta in fields from a rotational mechanical antenna

  title={Angular momenta in fields from a rotational mechanical antenna},
  author={Yu Mao and Y Liu and Hai Lin},
  journal={Journal of Physics Communications},
  • Yu Mao, Y Liu, Hai Lin
  • Published 7 October 2021
  • Physics
  • Journal of Physics Communications
Mechanic antennas provide opportunities for human portable, VLF communications, where a rotational dipole emits EM signals with angular momenta. In this paper we analytically derive the electromagnetic fields from a rotational electric dipole using Fourier transform method, and find that the radiated fields from the rotational electric dipole carries nonzero energy flow density in both orbital and spin angular momentum (AM) parts by their flux tensors. Intuitively, a dipole circulating on the… 
Higher-order valley vortices enabled by synchronized rotation in a photonic crystal
  • R. Zhou, H. Lin, +4 authors Dong-Hui Xu
  • Physics
  • 2021
Rui Zhou, Hai Lin1,∗ Yanjie Wu, Zhifeng Li, Zihao Yu, Y. Liu(刘泱杰)2,3,† and Dong-Hui Xu 1 College of Physics Science and Technology, Central China Normal University, Wuhan 430079, Hubei Province


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