Results 231 to 240 of about 75,899 (299)

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

Reliability and sensitivity of mechanical properties of phase-specific during the 505-test using a radar device in soccer players. [PDF]

Front Physiol
Li J, Li H, Gu F, Li Y, Cheng R, Song L, Hautier C, Zhang Q.   +7 more
europepmc   +1 more source

An On‐Demand Neuromorphic Vision System Enabled by a Multi‐Paradigm Neuromorphic Device and Hierarchical Reconfigurability Designed from Device to System Level

Advanced Science, EarlyView.
An on‐demand ultra‐reconfigurable intelligent vision system with hierarchical reconfigurability from device to system levels is demonstrated. Through co‐design of a multi‐paradigm device, reconfigurable circuits, and adaptive system architecture/algorithms, the system enables seamless switching among spiking, non‐spiking, neuromorphic imaging (NI), and
Biyi Jiang, Jiayi Xu, Liang Ran, Xinhe Feng, Khalil Harrabi, Yida Li, Longyang Lin, Feichi Zhou   +7 more
wiley   +1 more source

Experiment and Modelling of Ultrasonic Vibration-Assisted Creep-Aging Tensile for 7055-T6 Alloy. [PDF]

Materials (Basel)
Zuo D, Fu H, Xu T, Ye T, Han Y, Gao C.
europepmc   +1 more source

Improving manual cardiopulmonary resuscitation quality in resource-limited settings: an overlooked yet crucial challenge before advanced interventions. [PDF]

World J Emerg Med
Pan L, Pei H, Zhang Z, Liu J, Shi Y, Wang H, Hong X, Zhou Y, Ke C, Zhao Y, Lyu J, Liang J, Huang J, Xi X, Li X, Zhang J, Liu K.   +16 more
europepmc   +1 more source

A low-power VHF transceiver for airborne SAR with enhanced buried object detection using chirped signal processing. [PDF]

Sci Rep
Siddik Y, Hussein KFA, Esmaiel H, El-Samie FEA, Mubarak AS.   +4 more
europepmc   +1 more source

Sonophysical mechanisms of bubble fragmentation near an ultrasonically vibrating boundary: influence of frequency and amplitude on interfacial intensification. [PDF]

Ultrason Sonochem
Zhao Z, Lu W, Zhang Q, Zhuo H, Su Z.
europepmc   +1 more source

Non-Parametric Kinematic Optimization of Flapping Foil Propulsion Using a Discrete Adjoint Method. [PDF]

Biomimetics (Basel)
Yin Z, Zhou C, Wang X, Liao X, Wang J.
europepmc   +1 more source

Optimal Control Method for Microgrid Distributed Generation Based on Multi-Agent Adaptive Decision-Making. [PDF]

Sensors (Basel)
Mai H, Teng Q, Wang X.
europepmc   +1 more source