The systematic framework for the proposed multi-liquid identification is depicted in Fig. 1. The system comprises a space-time-coding metasurface illuminated by a feeding pyramidal horn antenna, a ...

With the rapid development of artificial electromagnetic (EM) media, metamaterials have achieved remarkable progress over the past two decades, demonstrating powerful capabilities in manipulating the ...

Metasurface engineering has emerged as a transformative approach for bespoke control of surface-bound electromagnetic waves. By arranging subwavelength meta-atoms on a two-dimensional interface, these ...

Metasurfaces are ultrathin arrays of engineered meta-atoms that enable precise control over terahertz (THz) radiation by tailoring amplitude, phase, polarisation and frequency content at subwavelength ...