Results 91 to 100 of about 77,948 (279)

Fiber-Optic Distributed Acoustic Sensing for Smart Grid Application

Photonics
Fiber-optic distributed acoustic sensing (DAS) promises great application prospects in smart grids due to its superior capabilities, including resistance to electromagnetic interference, long-distance coverage, high sensitivity and real-time monitoring ...
Xiaofeng Zhang, Jun Qi, Xiao Liang, Zhen Guan, Zeguang Liu, Chang Zhang, Dabin Chen, Weifeng Deng, Changzhi Xu, Xinwei Wang, Huanhuan Liu   +10 more
doaj   +1 more source

Random matrix theory based distributed acoustic sensing

Optical Sensors 2019, 2019
Random matrices exhibit interesting statistical properties which are studied under random matrix theory (RMT). In this research study, we present a novel approach for fiber optic distributed acoustic vibration sensing (DAS) systems which is based on the recent results of RMT.
Olcer, Ibrahim, Oncu, Ahmet
openaire   +2 more sources

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

Advanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief, Swagato Sarkar, Anik Kumar Ghosh, Osvalds Verners, Kamal Kumar Meena, Su‐Hyeong Lee, Soosang Chae, Tobias A. F. König, Beate Krause, Andreas Fery, Mehmet Sait Özer, Anindya Nag, Amit Das   +12 more
wiley   +1 more source

Distributed Acoustic Sensing to Estimate the Permeability

Geophysical Research Letters
Abstract Optical fiber in a borehole can be interrogated with distributed acoustic sensors (DAS) to capture fracture displacements with the potential to map surrounding fracture networks. We designed a laboratory experiment to test the capability of DAS to determine borehole flow characteristics, and we show that for the first time ...
Christopher W. Johnson, Carly M. Donahue
openaire   +1 more source

Laser‐Assisted Phase Engineering of 2D MoS2 for Efficient Solution‐Processed Electronics

Advanced Materials, EarlyView.
Here, local laser‐assisted phase transition from solution‐processed phase‐pure 1T′ to 2H MoS2 is shown to critically depend on the irradiation atmosphere. While processing in air leads to damaged insulating regions, inert conditions yield semiconducting 2H domains, enabling direct field‐effect transistor patterning with optimized lateral 1T′‐2H MoS2 ...
Anna Zhuravlova, Minjuan Li, Osamah Alharbi, Yeonsu Jeong, Bin Han, Lei Gao, Mischa Bonn, Mario Lanza, Sheng Yang, Antonio Gaetano Ricciardulli, Paolo Samorì   +10 more
wiley   +1 more source

Application of Distributed Optical Fiber Measurement Technology in Shale Gas Production Profile

Shiyou jixie, 2022
In shale gas horizontal wells,traditional gas production profile testing methods are prone to problems such as instrument failure,large testing error and limited monitoring duration due to complex downhole flow regime,many debris impurities in the ...
Wang Hui
doaj  

Switchable Magnonic Crystals Based on Spin Crossover/CrSBr Heterostructures

Advanced Materials, EarlyView.
Multiscale modeling is employed to investigate the functionality of a light‐controlled, tunable magnonic crystal based on spin‐crossover Fe‐pz molecules integrated with a monolayer of CrSBr. Ab initio simulations confirm that the molecules remain functional on the CrSBr surface, while a semiclassical elastic model demonstrates that light‐induced ...
Andrei Shumilin, Sourav Dey, Denisa Coltuneac, Laurentiu Stoleriu, José J. Baldoví   +4 more
wiley   +1 more source

High-spatiotemporal-resolution distributed Brillouin sensing with transient acoustic wave

Light: Science & Applications
Real-time wide-area environment sensing is crucial for accessing open-world information streams from nature and human society. As a transformative technique distinct from electrical sensors, distributed optical fiber sensing especially for Brillouin ...
Yin Zhou, Yuan Cheng, Jia Ye, Zonglei Li, Haijun He, Wei Pan, Bin Luo, Lianshan Yan   +7 more
doaj   +1 more source

Distributed acoustic sensing for ocean applications

Extensive monitoring of acoustic activities is important for many fields, including biology, security, oceanography, and Earth science. Distributed acoustic sensing (DAS) is an evolving technique for continuous, wide-coverage measurements of mechanical vibrations, which is suited to ocean applications. DAS illuminates an optical fiber with laser pulses
Xenaki, Angeliki, Gerstoft, Peter, Williams, Ethan, Abadi, Shima   +3 more
openaire   +2 more sources

High‐Performance Transparent, Deformable, and Recoverable Biomimetic Stevia–PVA Hydrogel Triboelectric Nanogenerator with Machine Learning‐Assisted Motion Recognition

Advanced Materials, EarlyView.
A transparent, deformable stevia–PVA hydrogel triboelectric nanogenerator delivers significantly enhanced mechanical strength and electrical output through biomimetic hydrogen‐bonded networks. Coupled with machine learning–assisted signal recognition, the self‐powered hydrogel enables accurate human‐motion sensing for intelligent wearable and IoT ...
Thien Trung Luu, Bui Minh Quang, Toan Minh Pham, Jinsoo Kim, Kyungwho Choi, Dukhyun Choi   +5 more
wiley   +1 more source