An Energy Efficient Cooperative Communication Scheme in Ambient RF Powered Sensor Networks
IEEE Access, 2019 The ambient radio frequency (RF) energy harvesting technology has recently been regarded as a potential solution for powering the wireless sensor networks (WSNs).
Tao Liu +3 more
doaj +1 more source
Living IoT: A Flying Wireless Platform on Live Insects
, 2018 Sensor networks with devices capable of moving could enable applications ranging from precision irrigation to environmental sensing. Using mechanical drones to move sensors, however, severely limits operation time since flight time is limited by the ...
Almarshadi M. H. +14 more
core +1 more source
Cryogenic Stress-Driven Grain Growth Observed via Microcompression with in situ Electron Backscatter Diffraction [PDF]
, 2020 The deformation of materials at cryogenic temperature is of interest for space, arctic, and fundamental science applications. In this work, a custom-built cooling system attached to a commercial picoindenter was used for in situ cryogenic ...
Bair, JL +3 more
core
Bioinspired Stabilization of Fluorescent Au@SiO2 Tracers for Multimodal Biological Imaging
Advanced Functional Materials, EarlyView.This study demonstrates a bioinspired stabilization strategy for fluorescent gold‐silica nanoparticles. Inspired by natural biosilica maturation, high‐temperature calcination transforms the silica shells, preventing dissolution in cell culture media and intracellular environments.
Wang Sik Lee +5 more
wiley +1 more source
The relationship between VHF radar auroral backscatter amplitude and Doppler velocity: a statistical study [PDF]
Annales Geophysicae, 1996 A statistical investigation of the relationship between VHF radar auroral backscatter intensity and Doppler velocity has been undertaken with data collected from 8 years operation of the Wick site of the Sweden And Britain Radar-auroral Experiment ...
B. A. Shand, M. Lester, T. K. Yeoman
doaj +1 more source
Throughput Maximization for UAV-Aided Backscatter Communication Networks [PDF]
, 2019 This paper investigates unmanned aerial vehicle (UAV)-aided backscatter communication (BackCom) networks, where the UAV is leveraged to help the backscatter device (BD) forward signals to the receiver.
Hua, M +4 more
core +2 more sources
Mechanoregulatory Effects of Cell‐Scale Microwells on Epithelial Cell Phenotype
Advanced Functional Materials, EarlyView.In small polycaprolactone microwells, A549 epithelial cells span well edges, in contrast to cells growing on flat substrates. Focal adhesion sites (yellow) concentrate at topographic boundaries, while cytoskeletal tension (magenta stress fibers) is transmitted to the nucleus (blue), reducing nuclear sphericity.
Ruiwen He +10 more
wiley +1 more source
Performance Characterization of Relaying Using Backscatter Devices
IEEE Open Journal of the Communications Society, 2020 In this paper, we examine the error performance of backscatter communication in the presence of ambient interference, where the backscatter device acts as a relay.
Xiaolun Jia, Xiangyun Zhou
doaj +1 more source
Spectro-Temporal Combining in Bistate WiFi Backscatter Communication With Frequency Shift
IEEE Access, 2021 In WiFi backscatter communication, the frequency shift technique allows a backscattered signal to appear not in the frequency channel of the carrier signal but in adjacent ones, thus avoiding noisy OFDM-based carrier signals and increasing the ...
Hwanwoong Hwang +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta +8 more
wiley +1 more source