Results 81 to 90 of about 1,043 (213)

Kresling Origami‐Based Metamaterial Robot for Dynamic Electromagnetic Control

Advanced Science, EarlyView.
A reconfigurable metamaterial system integrates deformable origami units with high‐permittivity ceramic plates. Pneumatic switching between structural states alters local resonance conditions, enabling dynamic radar stealth and adaptive microwave reflection for mobile communication.
Xinxi Zeng, Long Zhou, Shaojie Xi, Yixuan Gao, Desheng Pan, Chaoyang Sun, Haoxin Sun, Xian Wang, Lingyun Qian, Peipei Li, Pengfei Zhu, Bo Li, Jiang Luo, Ji Zhou   +13 more
wiley   +1 more source

Dual-band dual-circular polarized beam-steering metasurface based on digital coding for intelligent IoV communication

Alexandria Engineering Journal
A novel 1 bit dual-band dual-CP programmable folded metasurface (PFM) with dynamic beam steering capability is proposed for vehicle communications. The proposed PFM consists of a pair of functional metasurface antennas arranged on the top and bottom ...
Xinyu Hu, Huanhuan Peng, Pei Xiao, Bo Pang, Dahai Dai, Gaosheng Li   +5 more
doaj   +1 more source

Next-Generation Programmable Holographic Metasurface Antenna

2025 Photonics & Electromagnetics Research Symposium - Spring (PIERS-Spring)
Dynamic metasurface antennas and holographic surfaces have opened new frontiers in fields of next generation reconfigurable wireless communications, meta-sensing, computational imaging, and computational optics. A critical component of these advanced systems lies in the engineering of meta-elements that efficiently manipulate electromagnetic waves ...
Jabbar, Abdul, Elsayed, Mostafa, Ur-Rehman, Masood, Imran, Muhammad Ali, Larijani, Hadi, Abbasi, Qammer, Usman, Muhammad   +6 more
openaire   +2 more sources

Space‐Time Metasurface Antenna Enabled High‐Dimensional Electromagnetic Modulation for Intrinsic Physical Layer Security

Advanced Science, EarlyView.
The concept of high‐dimensional EM modulation using the STMA for physical layer secure communication is illustrated in figure. The STMA consists of a series of programmable unit cells, with 1‐bit reconfigurable phase states (0/π). The STMA is excited by a monochromatic continuous wave (CW) at frequency fc and controlled by a field‐programmable gate ...
Xinyu Fang, Yiqing Sun, Chenfeng Yang, Siran Wang, Zheng Xing Wang, Kaixu Wang, Geng‐Bo Wu   +6 more
wiley   +1 more source

Reprogrammable meta-hologram for optical encryption

Nature Communications, 2020
Here, the authors demonstrate a re-programmable metasurface that can produce arbitrary holographic images for optical encryption. The encrypted information is divided into two matrices and defined to the incident laser to produce arbitrary holographic ...
Geyang Qu, Wenhong Yang, Qinghai Song, Yilin Liu, Cheng-Wei Qiu, Jiecai Han, Din-Ping Tsai, Shumin Xiao   +7 more
doaj   +1 more source

CoSP: Reconfigurable Metamaterial Inverse Design via Contrastive Pretrained Large Language Model

Advanced Science, EarlyView.
In this work, CoSP (contrastive multi‐state pretrain), an intelligent inverse design method for reconfigurable metamaterials based on a contrastive pretrained large language model, is proposed. Numerical experiments demonstrate that CoSP can design reconfigurable metamaterial structures for multi‐state, multi‐band optical responses, showing great ...
Shujie Yang, Yuqi Zhang, Xuzhe Zhao, Yansong Tang, Kaichen Dong   +4 more
wiley   +1 more source

Giant Magnetic Purcell Effect Induced by High‐Order Mie Resonances

Advanced Science, EarlyView.
High‐order Mie resonances in dielectric spheres selectively amplify magnetic dipole emission from Eu3+ emitters, producing a giant magnetic Purcell effect. Localized emitters can efficiently access high‐order resonant modes, and the low‐loss TiO2 platform enables direct far‐field observation of the enhanced emission.
Haonan Shi, Ningning Song, Anjun Huang, Zhengwen Yang, Jingbo Sun, Yongzheng Wen, Ji Zhou   +6 more
wiley   +1 more source

Bamboo‐Slip‐Inspired Conformal Reconfigurable Metasurfaces

Advanced Science, EarlyView.
Bamboo‐slip‐inspired conformal reconfigurable metasurface system. The structure is mainly composed of three parts, which are conformal metasurface, pattern reconfigurable antenna, and control components (such as Field Programmable Gate Array (FPGA)). Conformal metasurfaces draw inspiration from the design of ancient Chinese bamboo slips.
Qifan Li, Shaofeng Zhang, Qiang Feng, Dexiao Xia, Yajie Mu, Xiangjin Ma, Jiaqi Han, Haixia Liu, Guangyao Liu, Long Li   +9 more
wiley   +1 more source

Interactively addressable organic metadevices

Nature Communications
Active, pixel-level addressability is central to the realization of metadevices with programmable wavefront control. However, two-dimensional operation at visible wavelengths remains challenging, as reducing metasurface pixel dimensions imposes ...
Xiangyu Huang, Benjamin Renz, Yueqiang Hu, Na Liu   +3 more
doaj   +1 more source

Programmable Metasurfaces: Polarization‐Controlled Dual‐Programmable Metasurfaces (Adv. Sci. 11/2020) [PDF]

Advanced Science, 2020
Xin Ge Zhang, Qian Yu, Wei Xiang Jiang, Ya Lun Sun, Lin Bai, Qiang Wang, Cheng‐Wei Qiu, Tie Jun Cui   +7 more
openaire   +1 more source