The metaverse has captured significant attention as it provides a virtual realm that cannot be
experienced in the physical world. Programmable optical holograms, integral components of …

Conventional wireless communication schemes indiscriminately transmit information into the
whole space and pose inherent security risks. Recently, directional information modulation …

Information metasurface has shown great potential in wireless communications owing to its
ability to flexibly control electromagnetic waves. However, it is still a big challenge to achieve …

Abstract Information security plays an important role in every aspect of life to protect data
from stealing and deciphering. However, most of the previously reported works were based …

Recently, there has been a growing interest in time modulated metamaterials. 1 These
materials exhibit dynamic changes in their properties over time, representing a novel …

For most optical encryption mechanisms, craft precision of phase modulation components is
finite, restricting information efficient sharing and compatibility with processing. We …

In this paper, we investigate a novel physical layer secure (PLS) potential technique which is
summarized into a category of index modulation (IM) scheme, namely the spatial field digital …

Nowadays, 3D human facial reconstruction (FR) plays a pivotal role in various areas
including human-robot interaction, virtual reality, identification, and so on. However …

In this paper, we propose RMDM, Random Meta-atoms enabled Directional Misinformation,
a novel system that enables a wireless transmitter to program a transmissive metasurface to …