Results 81 to 90 of about 2,074 (252)

A Treatise on the Taxonomy of Reconfigurable Intelligent Surfaces

IEEE Open Journal of the Communications Society
This work presents a comprehensive taxonomy of reconfigurable intelligent surfaces (RISs) across its many variants in a systematically-structured form. The taxonomy encapsulates the different RIS categories based on the RIS components, channel estimation
Sherif Adeshina Busari, Ifiok Otung, Savas Konur, Raed Abd-Alhameed   +3 more
doaj   +1 more source

A Programmable Multi‑Modal Information Encryption System Based on the Dynamic Wetting Behavior of Liquid Metal

Advanced Science, EarlyView.
This work presents a programmable multimodal information encryption device that harnesses the dynamic wetting behavior of liquid metal to achieve secure, reconfigurable, and high‐precision encryption and decryption of diverse data types, including text and images.
Xuedong Qiang, Min Mao, Yihao Wang, Nan Li, Mengyu Jiang, Chenkun Sun, Bangdeng Du, Jifei Ye, Linyan Wang, Fei Zhan, Lei Wang   +10 more
wiley   +1 more source

Design and validation of scalable reconfigurable intelligent surfaces

Computer Networks
In this paper, we share our experience in designing, prototyping, and empirically characterizing RF Switch-based Reconfigurable Intelligent Surfaces (RIS). Our RIS design consists of arrays of patch antennas, delay lines, and programmable radio-frequency (RF) switches, enabling 3D beamforming passively, without active RF components.
Rossanese, Marco, Garcia-Saavedra, Andres, Mursia, Placido, Sciancalepore, Vincenzo, Asadi, Arash, Costa-Perez, Xavier   +5 more
openaire   +2 more sources

TRIM: Simultaneous Thermometry, Ranging, and Imaging via a Monolithic Metalens

Advanced Science, EarlyView.
ABSTRACT While metasurfaces offer a pathway beyond the discrete architectures of conventional LWIR systems, physically fusing high‐precision thermometry and passive ranging onto a single metalens remains a formidable challenge. Here, we demonstrate a monolithic, dual‐focus metalens capable of simultaneous multidimensional sensing.
Man Yuan, Yuqing Zhang, Wangzhe Zhou, Zhaojian Zhang, Xiaoyun He, Xinpeng Jiang, Yiyi Li, Xin He, Jiagui Wu, Yuanmu Yang, Junbo Yang   +10 more
wiley   +1 more source

Performance Characterization of Continuous Reconfigurable Intelligent Surfaces

ICC 2025 - IEEE International Conference on Communications
We consider a reconfigurable intelligent surface (RIS) that can implement a phase rotation continuously over the whole surface rather than via a finite number of discrete elements. Such an RIS can be considered a design for future systems where advances in metamaterials make such an implementation feasible or as the limiting case where the number of ...
Amy S. Inwood, Peter J. Smith 0001, Mahmoud A. AlaaEldin, Michail Matthaiou   +3 more
openaire   +2 more sources

A Multimodal Magnetically Driven Soft Robot With Integrated Actuation‐Sensing Based on Photothermal Reprogramming Technology

Advanced Science, EarlyView.
This work reports a thermally safe, photothermally reprogrammable magnetic soft robot with its reprogramming temperature tuned to ∼39.5°C for biocompatibility. It achieves multimodal locomotion (max speed of 1.8 BL/s) and integrates liquid‐metal capacitive sensing to monitor self‐motion and detect environmental changes in simulated gastric environments,
Liu Yang, Yuliao Dong, Kangning Li, Cheng Jing, Ben Wang, Lin Xu   +5 more
wiley   +1 more source

A Review of Phase-Change Materials and Their Potential for Reconfigurable Intelligent Surfaces. [PDF]

Micromachines (Basel), 2023
Matos R, Pala N.
europepmc   +1 more source

Reconfigurable Intelligent Surface-Enabled Downlink NOMA

IEEE Transactions on Wireless Communications
Reconfigurable intelligent surfaces (RISs) bring great potential to the advancement of 6G and beyond wireless communication technologies. RISs introduce a great degree of flexibility, allowing some sort of virtual control over the wireless channel.
Ali Tugberk Dogukan, Emre Arslan, Ertugrul Basar   +2 more
openaire   +3 more sources

Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review

Advanced Science, EarlyView.
Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh, Ki‐bum Lee, Junghyeon Lee, Seunghee Cho, Malkeshkumar Patel, Hangfei Li, Yu Wen, Ye Zhou, Joondong Kim   +8 more
wiley   +1 more source

Bias‐Tunable Two‐Terminal Organic Photodetector for Intelligent Imaging

Advanced Science, EarlyView.
A vertically stacked two‐terminal photodetector with a symmetric donor–acceptor–donor trilayer active exhibits reconfigurable photoresponse with bias‐tunable magnitude and polarity, together with sub‐millisecond response speed and a wide tunable output window.
Sangin Hahn, Sanghoon Park, Seunghyup Yoo   +2 more
wiley   +1 more source