Results 61 to 70 of about 274,699 (276)

An Energy Efficient Internet of Things Network Using Restart Artificial Bee Colony and Wireless Power Transfer

open access: yesIEEE Access, 2019
The Internet of Things (IoT) provides a beautiful and intelligent landscape for humanity's future. The connections of various sensors and devices in the IoT result in a large consumption of energy.
Xiu Zhang, Xin Zhang, Liang Han
doaj   +1 more source

Power Efficient MISO Beamforming for Secure Layered Transmission

open access: yes, 2013
This paper studies secure layered video transmission in a multiuser multiple-input single-output (MISO) beamforming downlink communication system. The power allocation algorithm design is formulated as a non-convex optimization problem for minimizing the
Alnuweiri, Hussein   +2 more
core   +1 more source

Self‐Sintering Ionogel Binder for Flexible, Recyclable, and Healable Printed Giant Magnetoresistive Sensors

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Electronic waste has emerged as a major environmental challenge, driven by the massive consumption and a limited lifetime of modern electronic devices, stimulating the development of sustainable electronics. Here, an all‐biomaterial gelatin‐choline‐citric acid ([Ch][CA]) ionogel is developed as an active binder to realize self‐sintered ...
Lin Guo   +10 more
wiley   +1 more source

Wireless Power Transmission - A Next Generation Power Transmission System

open access: yesInternational Journal of Computer Applications, 2010
paper, we present the concept of transmitting power without using wires i.e., transmitting power as microwaves from one place to another is in order to reduce the transmission and distribution losses. This concept is known as Microwave Power transmission (MPT). We also discussed the technological developments in Wireless Power Transmission (WPT).
S. Sheik Mohammed   +2 more
openaire   +1 more source

Auxeticity‐by‐Assembly: Interlocking Modular Auxetic Metamaterials with Selectively Activatable AgNW–Graphene Oxide‐EGaIn Composite Interconnects for Scalable Freeform Photovoltaic Modules

open access: yesAdvanced Functional Materials, EarlyView.
Auxeticity‑by‑Assembly converts freeform photovoltaics from cut‑defined layouts to assembly‑defined systems. Standardized interlocking units generate negative‑Poisson‑ratio, reconfigurable architectures, while hinge regions are wired by selectively activatable AgNW–GO@EGaIn composite interconnects and a folding‑enabled interconnector layer. A decimeter‑
Seok Joon Hwang   +15 more
wiley   +1 more source

Analysis of a distributed MIMO channel capacity under a special scenario

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
A distributed antenna system enhances the coverage performance of a system by distributing the antennas geographically, as well as by improving the diversity gain and capacity performance.
Xiaonan Zhao   +5 more
doaj   +1 more source

Methods of Atmospheric Coherence Length Measurement

open access: yesApplied Sciences, 2022
Free-space optical (FSO) communication possesses the advantages of high security, large information capacity, high-speed transmission, small terminal size, low power consumption, easy and flexible deployment, etc.
Ming Li, Pengxin Zhang, Jiawei Han
doaj   +1 more source

Multi‐Scale Interface Engineering of MXenes for Multifunctional Sensory Systems

open access: yesAdvanced Functional Materials, EarlyView.
MXenes, as two‐dimensional transition metal carbides and nitrides, demonstrate remarkable capabilities for multifunctional sensing applications. This review systematically examines multi‐scale interface engineering approaches that enhance sensing performance, enable diverse detection functionalities, and improve system‐level compatibility in MXene ...
Jiaying Liao, Sin‐Yi Pang, Jianhua Hao
wiley   +1 more source

Gas Sensor Based on 3-D WO3 Inverse Opal: Design and Applications

open access: yesSensors, 2017
A three-dimensional inverse opal (3DIO) WO3 architecture has been synthesized via a simple sacrificial template method. Morphology features of the 3DIO were characterized by scanning electron microscope (SEM) and its structure was characterized by X-ray ...
Ruiqing Xing   +3 more
doaj   +1 more source

Optical generation and wireless transmission of 60 GHz OOK signals using gain switched laser [PDF]

open access: yes, 2010
We present a novel, simple and cost effective system for optical millimeter-wave generation and transmission of 3 Gbps data based on gain switching.
Anandarajah, Prince M.   +3 more
core  

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