Results 81 to 90 of about 461,114 (287)

Multifunctional Bio‐Based Packaging for Perishable Foods: Structural Design, Scalable Fabrication, and Versatile Applications

open access: yesAdvanced Materials, EarlyView.
An overview of design principles and scalable fabrication strategies for multifunctional bio‐based packaging. Radiative cooling films, modified‐atmosphere films/membranes, active antimicrobial/antioxidant platforms, intelligent optical/electrochemical labels, and superhydrophobic surfaces are co‐engineered from material chemistry to mesoscale structure
Lei Zhang   +6 more
wiley   +1 more source

An Empirical Study of 5G, Wi-Fi 6, and Multi-Connectivity Scalability in an Indoor Industrial Scenario

open access: yesIEEE Access
Industry 4.0 is being adopted by the manufacturing sector to improve the flexibility and reduce installation costs by the use of wireless connectivity.
David Segura   +5 more
doaj   +1 more source

Resource allocation in heterogeneous cognitive radio sensor networks

open access: yesInternational Journal of Distributed Sensor Networks, 2019
Cognitive radio sensor networks offer a promising means of meeting rapidly expanding demand for wireless sensor network applications in new monitoring and objects tracking fields.
Mohammed Al-Medhwahi   +4 more
doaj   +1 more source

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

open access: yesAdvanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis   +19 more
wiley   +1 more source

Design and Development of a Metamaterial Enhanced Microstrip Antenna Integrated With a Monopulse Comparator for Tracking Applications

open access: yesIEEE Access
This paper presents the design and development of a metamaterial-enhanced pentagonal patch antenna integrated with a monopulse comparator operating at 2.4 GHz for S-band radar tracking and UAV applications.
V M Jayakrishnan   +2 more
doaj   +1 more source

FuGeF: A Resource Bound Secure Forwarding Protocol for Wireless Sensor Networks

open access: yesSensors, 2016
Resource bound security solutions have facilitated the mitigation of spatio-temporal attacks by altering protocol semantics to provide minimal security while maintaining an acceptable level of performance.
Idris Abubakar Umar   +3 more
doaj   +1 more source

Simulation of Wireless Digital Communication Systems [PDF]

open access: yes, 2004
Due to the explosive demands for high speed wireless services, such as wireless Internet, email and cellular video conferencing, digital wireless communications has become one of the most exciting research topics in electrical and electronic engineering ...
Landqvist, R., Mohammed, A.
core   +1 more source

INTELLIGENT WIRELESS COMMUNICATION SYSTEM

open access: yesСистеми управління, навігації та зв’язку. Збірник наукових праць
The subject of the study is models and methods for organizing a semantic communication system to increase the throughput of a wireless communication system. The goal is to develop recommendations for the implementation of multiple access with the distribution of information space according to the model.
A. Serkov   +5 more
openaire   +1 more source

Recent Advances in Electrospun Nanofibers for Triboelectric Nanogenerators: Performance Enhancement Strategies and Emerging Applications

open access: yesAdvanced Materials, EarlyView.
This review highlights recent advances in electrospun nanofiber‐based triboelectric nanogenerators, emphasizing how material design, fiber architecture, and interface engineering collectively enhance output performance and mechanical durability. Key developments in porous, aligned, core‐shell, and hierarchical nanofibers are discussed alongside ...
MD Fajla Rabbi   +3 more
wiley   +1 more source

A Self‐Healing Magnetoelectric Sensor with Pain Sensing for Underwater Soft Electronics

open access: yesAdvanced Materials, EarlyView.
This study introduces a self‐healing magnetoelectric sensory system designed for amphibious soft electronics. By utilizing liquid‐metal conductors and self‐healing elastomers, the system enables autonomous recovery from mechanical damage. Its multilayered architecture features dual self‐powered proximity and tactile sensing alongside pain sensing in ...
Xuan Zhang   +6 more
wiley   +1 more source

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