Jie Zhao

TL;DR: Digital metamaterials consisting of two kinds of unit cells whose different phase responses allow them to act as ‘0’ and ‘1’ bits are developed to enable controlled manipulation of electromagnetic waves.

TL;DR: In this paper, Wu et al. proposed a digital metamaterial with two kinds of unit cells with 0 and π phase responses, which they named as "0" and "1" elements.

TL;DR: A general theory of space-time modulated digital coding metasurfaces is proposed to obtain simultaneous manipulations of EM waves in both space and frequency domains, i.e., to control the propagation direction and harmonic power distribution simultaneously.

TL;DR: The proposed method offers a new way to control scattering of terahertz waves and can be implemented using conventional lithography, and it is shown that multi-bit coding metasurfaces have strong abilities to control teraHertz waves by designing-specific coding sequences.

TL;DR: A dynamic time-domain digital-coding metasurface that enables efficient manipulation of spectral harmonic distribution by dynamically modulating the local phase of the surface reflectivity is introduced, enabling accurate control of different harmonics in a highly programmable and dynamic fashion.