Results 131 to 140 of about 5,051,465 (303)

Improving lifetime of wireless sensor networks

open access: yesNetwork Protocols and Algorithms, 2010
A wireless sensor network consists from a collection of transceivers positioned in the plane. Each transceiver is equipped with a limited battery charge. The battery charge is reduced after each transmission, depending on the transmission distance. One of the major problems in wireless ad hoc network is designing a route network traffic algorithm that ...
openaire   +2 more sources

Stabilization of Strongly Reduced Fe(I) Single Atom Species Coordinated in a 2D Self‐Assembled Metal–Organic Network

open access: yesAdvanced Functional Materials, EarlyView.
A graphene‐supported 2D metal–organic network stabilizes highly reactive Fe(I)‐N4 single sites through Co‐induced charge redistribution. Combined experiments and theory reveal Fe(I) formation, oxygen‐driven oxidation, and O2 activation mechanisms, offering a strategy to access low‐valent iron centers relevant to catalytic and biological processes ...
Alessandro Namar   +9 more
wiley   +1 more source

Lifetime Optimization via Network Sectoring in Cooperative Wireless Sensor Networks

open access: yes, 2010
Employing cooperative communication in multihop wireless sensor networks provides the network with sig-nificant energy efficiency. However, the lifetime of such a network is directly dependant upon the lifetime of each of its individual sections (or ...
Bahman Abolhassani   +2 more
core   +1 more source

Decoupling Li+ Transport in Self‐Healing Polymer Dual‐Salt Electrolytes for Room Temperature Lithium Metal Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A self‐healable polymer matrix, crosslinked via dynamic imine bonds, is synergistically coupled with a LiPF6–LiDFOB dual‐salt system to decouple Li+ from the polymer matrix, enabling fast Li+ transport. This strategy offers an effective pathway toward high‐performance, next‐generation gel‐polymer‐based Li‐metal batteries.
Soumallya Banerjee   +10 more
wiley   +1 more source

Efficient network lifetime for barrier coverage in heterogeneous sensor network

open access: yes, 2013
Wireless sensor networks has been the focus of a lot of research efforts recently. The barrier coverage problem is the fundamental issue in sensor networks, which minimizes the prob ability of intrusion detection through a barrier of sensor network ...
K R Venugopal   +7 more
core   +1 more source

Paving the Way for Next‐Generation Solid‐State Waste Heat Recovery: A Thermomagnetic Materials and Systems Roadmap

open access: yesAdvanced Functional Materials, EarlyView.
Unlocking thermomagnetic low‐grade waste heat recovery. This perspective provides a comprehensive roadmap for the development of thermomagnetic materials and systems. By addressing key engineering challenges across multiple scales, it bridges the gap between micro‐power IoT devices and large‐scale industrial applications. ABSTRACT Nearly half of global
A. Waske   +13 more
wiley   +1 more source

Energy Provisioning Model for Maximizing Wireless Sensor Network Lifetime

open access: yes, 2007
International audienceOne of the major concerns in wireless sensor networks is improving the network lifetime. In this paper, we propose a new energy provisioning model and investigate the relationship between the network lifetime and the network density
Moez Esseghir   +5 more
core   +1 more source

Degradable, Skin‐Conformal Nanocomposite‐Based Bioelectronic Patches for High‐Fidelity Electrophysiology and Gesture‐Controlled Robotics

open access: yesAdvanced Functional Materials, EarlyView.
A degradable, skin‐conformal bioelectronic patch combines a starch‐dominated nanocomposite conductor with a gelatin substrate to enable sensitive strain sensing, high‐fidelity electrocardiography, electromyography, electrooculography, and machine‐learning‐assisted gesture control.
Ming Dong   +10 more
wiley   +1 more source

ANALYTICAL MODELING OF INNOVATIVE SENSOR PLACEMENT STRATEGY FOR CORONA-BASED WIRELESS SENSOR NETWORKS [PDF]

open access: yesJournal of Engineering Science and Technology, 2017
Wireless Sensor Networks (WSNs) applications are increasing rapidly, thanks to their broad potential in ecological monitoring, biomedical health monitoring, data gathering and many others.
HASSAN H. EKAL, JIWA B. ABDULLAH
doaj  

Ligand Assisted Epitaxial Growth of CsPbBr3 Microcrystal Resonators With Record ‐Low Lasing Thresholds

open access: yesAdvanced Functional Materials, EarlyView.
Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou   +19 more
wiley   +1 more source

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