JOURNAL ARTICLE

Shared-aperture full-duplex Janus meta-lens for asymmetric focusing of electromagnetic waves.

  • Published In: Applied Physics Letters, 2025, v. 126, n. 2. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Dong, Shufang; Qu, Kai; Wang, Shaojie; Zhao, Junming; Chen, Ke; Feng, Yijun 3 of 3

Abstract

The article focuses on the development of a shared-aperture Janus metasurface employing receiver–transmitter meta-atoms to achieve high-efficiency, asymmetric electromagnetic (EM) wave manipulation for linearly polarized (LP) waves propagating in opposite directions. Unlike previous designs that utilize only half of the metasurface aperture for each functionality, this approach enables full aperture utilization by independently controlling the transmission phases and amplitudes in both forward and backward directions, demonstrated experimentally at microwave frequencies with a Janus meta-lens exhibiting distinct multi-foci patterns. The proposed method simplifies metasurface construction, enhances transmission efficiency beyond prior limits, and offers potential applications in asymmetric imaging and multichannel EM information processing, with scalability to millimeter-wave and terahertz regimes.

Additional Information

  • Source:Applied Physics Letters. 2025/01, Vol. 126, Issue 2, p1
  • Document Type:Article
  • Subject Area:Science
  • Publication Date:2025
  • ISSN:0003-6951
  • DOI:10.1063/5.0242609
  • Accession Number:182307731
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