Results 91 to 100 of about 332,498 (295)

Optoelectronic Devices for In‐Sensor Computing

Advanced Materials, EarlyView.
The raw data obtained directly from sensors in the noisy analogue domain is often unstructured, which lacks a predefined format or organization and does not conform to a specific data model. Optoelectronic devices for in‐sensor visual processing can integrate perception, memory, and processing functions in the same physical units, which can compress ...
Qinqi Ren, Chaoyi Zhu, Sijie Ma, Zhaoqing Wang, Jianmin Yan, Tianqing Wan, Weicheng Yan, Yang Chai   +7 more
wiley   +1 more source

Reconfigurable Intelligent Surface: MIMO or Radiating Sheet?

IEEE Transactions on Wireless Communications
A Reconfigurable Intelligent Surface (RIS) redirects and possibly modifies the properties of incident waves, with the aim to restore non-line-of-sight communication links. Composed of elementary scatterers, the RIS has been so far treated as a collection of point scatterers with properties similar to antennas in an equivalent massive MIMO communication
Sotiris Droulias, Angeliki Alexiou
openaire   +2 more sources

Materials, Structure, and Interface of Stretchable Interconnects for Wearable Bioelectronics

Advanced Materials, EarlyView.
Stretchable interconnects are one of the fundamental components in achieving robust wearable devices, but their importance is often overlooked. This review highlights their importance and provides insightful information on various materials, configurations, and manufacturing approaches being studied for interconnects.
Yue Li, Asmita Veronica, Jiahao Ma, Hnin Yin Yin Nyein   +3 more
wiley   +1 more source

STAR‐RIS‐assisted scheme for enhancing physical layer security in NOMA systems

IET Communications, 2022
Simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR‐RIS) is capable of achieving full coverage area compared with conventional reflection‐only reconfigurable intelligent surface (RIS).
Shu Xu, Chen Liu, Hong Wang, Mujun Qian, Jin Li   +4 more
doaj   +1 more source

Performance of Wireless Optical Communication With Reconfigurable Intelligent Surfaces and Random Obstacles [PDF]

arXiv, 2020
It is difficult for free space optical communication to be applied in mobile communication due to the obstruction of obstacles in the environment, which is expected to be solved by reconfigurable intelligent surface technology. The reconfigurable intelligent surface is a new type of digital coding meta-materials, which can reflect, compute and program ...
arxiv  

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

Integration of Reconfigurable Intelligent Surfaces in Dynamical Energy Analysis

2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC), 2022
Reconfigurable intelligent surfaces have been recently investigated for their potentials to offer significant performance improvements in the next generation wireless telecommunication systems (5G and beyond / 6G). Intelligent surfaces are programmed to control the electromagnetic propagation and obtain the desired wavefront by tuning the local ...
Terranova, Sergio, Richter, Martin, Mohammed, Neekar M, Gradoni, Gabriele, Tanner, Gregor   +4 more
openaire   +2 more sources

Recent Advances in Stimuli‐Responsive Materials and Soft Robotic Actuators for Bioelectronic Medicine

Advanced Materials, EarlyView.
This review explores the integration of responsive materials and soft robotic actuators with implantable electronics to address key challenges in bioelectronic medicine. By enabling shape actuation, these technologies improve deployment, adaptability, and accuracy in minimally invasive procedures.
Chaoqun Dong, George G. Malliaras
wiley   +1 more source

Responsive Molecules for Organic Neuromorphic Devices: Harnessing Memory Diversification

Advanced Materials, EarlyView.
Responsive molecules are essential for organic in‐sensor computing devices. This Review highlights recent advances in thedesign, synthesis, and incorporation of electrically, optically, and magnetically responsive molecules in multifunctional synaptic perception devices endowedwith both nonvolatile and volatile memory diversification. By exploiting the
Yusheng Chen, Bin Han, Marco Gobbi, Lili Hou, Paolo Samorì   +4 more
wiley   +1 more source

On Propagation Characteristics of Reconfigurable Surface Wave Platform: Simulation and Experimental Verification

IEEE Access
Reconfigurable intelligent surface (RIS) as a smart reflector is revolutionizing research for next-generation wireless communications. In contrast to this is a concept of using RIS as an efficient propagation medium for superiorly low path loss ...
Zhiyuan Chu, Kin-Fai Tong, Kai-Kit Wong, Chan-Byoung Chae, Chi Hou Chan   +4 more
doaj   +1 more source