Results 51 to 60 of about 4,524,836 (233)

Transparent Topological Meta‐Diplexer via Tightly Confined Valley Surface States

Advanced Science, EarlyView.
An optically transparent topological metasurface supporting tightly confined valley surface states enables robust and flexible wave routing in an ultrathin platform. A compact transparent meta‐diplexer with spatially and spectrally separated channels is realized, while communication experiments verify high‐fidelity signal transmission, opening new ...
Sijie Li, Ping Li, Zhihao Lan, Yin Li, Hang Wong, Menglin L.N. Chen   +5 more
wiley   +1 more source

Effects of high-latitude atmospheric gravity wave disturbances on artificial HF radar backscatter [PDF]

, 2006
International audienceObservations of HF radar backscatter from artificial field-aligned irregularities in an ionosphere perturbed by travelling disturbances due to atmospheric gravity waves are presented.
Tim K. Yeoman (7583066), A. Senior, M. J. Kosch (7595327), I. W. McCrea, M. T. Rietveld (7594184), Rietveld, M. T., Senior, A., T. K. Yeoman, I. W. McCrea (7594871), M. T. Rietveld, Kosch, M. J., M. J. Kosch, A. Senior (3255282), McCrea, I. W., Yeoman, T. K.   +14 more
core   +2 more sources

Coding and Detection Schemes for Ambient Backscatter Communication Systems

IEEE Access, 2017
Ambient backscatter technology has attracted much attention recently, because it enables battery-free devices, such as tags or sensors, to communicate through wireless energy harvesting and radio backscattering. Existing studies about ambient backscatter
Yang Liu, Gongpu Wang, Zhongzhao Dou, Zhangdui Zhong   +3 more
doaj   +1 more source

From Sensing Mechanisms to System Co‐Design: Graphene‐Based Sensors and Readout Circuits

Advanced Science, EarlyView.
This review establishes a unified PS–EQ–RF framework linking graphene sensing mechanisms, native electrical outputs, and output‐specific readout circuits. Voltage‐, current‐, resistance‐, and capacitance‐type sensing systems are systematically classified to guide architecture selection, low‐noise design, system co‐design, and practical integration ...
Jinduo Zhang, Meng Chen, Guanchen Li, Ruifeng Liu, Yingxin Wang, Ziran Zhao   +5 more
wiley   +1 more source

Joint Communication and Motion Energy Minimization in UGV Backscatter Communication

, 2019
While backscatter communication emerges as a promising solution to reduce power consumption at IoT devices, the transmission range of backscatter communication is short.
Shuai Wang, Minghua Xia, Yik-Chung Wu, Xia, MH, Wu, YC, Wang, S   +5 more
core   +1 more source

Optimizing electron backscatter diffraction of carbonate biominerals—resin type and carbon coating [PDF]

, 2009
Electron backscatter diffraction (EBSD) is becoming a widely used technique to determine crystallographic orientation in biogenic carbonates. Despite this use, there is little information available on preparation for the analysis of biogenic carbonates ...
Perez-Huerta, A., Alberto Pérez-Huerta, Pérez-Huerta, Alberto, Cusack, M., Cusack, Maggie, Maggie Cusack   +5 more
core   +1 more source

Low Power Secure Backscatter Communication Techniques Exploring Ambient Signals [PDF]

, 2022
In this article, we present the proof of concept of techniques exploring ambient signals for low power and secure backscatter communications. This real-time system operates by scavenging a crowded electromagnetic spectrum and recycling active incoming ...
Goussetis, George; id_orcid, Methapettyparambu Purushothama, Jayakrishnan; id_orcid, Brookes, Jeremy, Ding, Yuan; id_orcid, Jayakrishnan M. Purushothama, George Goussetis, Jeremy Brookes, Yuan Ding   +7 more
core   +1 more source

Model-Driven Channel Estimation for MIMO Monostatic Backscatter System With Deep Unfolding

IEEE Open Journal of the Communications Society
Monostatic backscatter has garnered significant interest due to its distinct benefits in low-cost passive sensing. Observing and sensing with backscatter necessitates determining the phase and amplitude of the backscatter channel to identify the state of
Yulin Zhou, Xiaoting Li, Xianmin Zhang, Xiaonan Hui, Yunfei Chen   +4 more
doaj   +1 more source

Harmonic Suppression in Frequency Shifted Backscatter Communications

IEEE Open Journal of the Communications Society, 2020
This paper provides a comprehensive study of the harmonics generated by a frequency shifted backscatter communication system. The suppression and the manipulability of different harmonics are of importance to avoid detrimental inter-user interference ...
Yuan Ding, Romwald Lihakanga, Ricardo Correia, George Goussetis, Nuno Borges Carvalho   +4 more
doaj   +1 more source

Ion‐Exchange‐Driven Ternary Organic Neuromorphic Devices with High Efficiency and Stability

Advanced Science, EarlyView.
Spontaneous ion exchange in a ternary polymer–ionic liquid blend disrupts the phase‐separated ionic domains of the binary film and creates a more homogeneous polymer–ion environment. This ionically reorganized matrix enables stable and efficient electrochemical doping, leading to ion‐gel‐gated organic electrochemical transistors with enhanced ...
Sungmin Lee, Vivek Pratap Singh, Hyeonryul Lee, Young‐Yong Kim, Yong‐Ryun Jo, Changhoon Lee, Ji Hoon Shim, Namsoo Lim, Guanjie Wang, Junyeong Sung, Dongyeop Yang, Zhongwu Wang, Liqiang Li, Chandran Balamurugan, Sooncheol Kwon   +14 more
wiley   +1 more source