Results 121 to 130 of about 4,266,114 (404)

Optical Fiber Grating Hydrogen Sensors: A Review

Italian National Conference on Sensors, 2017
In terms of hydrogen sensing and detection, optical fiber hydrogen sensors have been a research issue due to their intrinsic safety and good anti-electromagnetic interference.
J. Dai, Li Zhu, Gaopeng Wang, Feng Xiang, Yuhuan Qin, Min Wang, Minghong Yang   +6 more
semanticscholar   +1 more source

On the Deformation Behavior of Metastable CrMnNi Steels Processed by Directed Energy Deposition in Different Temperature Regimes

Advanced Engineering Materials, EarlyView.
In the present study, metastable CrMnNi steels with varying chemical compositions and a concomitantly altered stacking fault energy are processed via directed energy deposition and afterwards tested via tensile tests at different temperatures. The present study shows the influence of the manufacturing process on the elemental deformation mechanisms for
Julia Richter, Thomas Wegener, Florian Stredak, Gert Bartzsch, Steffen Scherbring, Javad Mola, Olena Volkova, Stefan Böhm, Thomas Niendorf   +8 more
wiley   +1 more source

Kovacs-like memory effect mediated fiber Bragg grating: resembling a silica quipu

Nature Communications
In antiquity, civilizations employed stone carvings and knotted quipu cords for information preservation. Modern telecommunications rely on optical fibers - silica glass strands engineered for light transmission - yet their capacity as archival media ...
Qiaochu Yang, Zhiyuan Xu, Xu Yue, Junqiu Long, Haopeng Wang, Yihan Zha, Furong Feng, Yang Ran, Bai-Ou Guan   +8 more
doaj   +1 more source

Space-division multiplexing for fiber-wireless communications

, 2018
We envision the application of optical Space-division Multiplexing (SDM) to the next generation fiber-wireless communications as a firm candidate to increase the end user capacity and provide adaptive radiofrequency-photonic interfaces.
Barrera, David, Garcia, Sergi, Gasulla, Ivana, Hervas, Javier, Sales, Salvador   +4 more
core   +1 more source

Study of the Effect of Process Parameters and Heat Treatment on the Formation and Evolution of Directed Energy Deposition of IN718‐CuCrZr Interface

Advanced Engineering Materials, EarlyView.
Bimetallic structures of Inconel 718 and CuCrZr are fabricated using the laser powder directed energy deposition method. The study reveals a strong dependence of interface characteristics such as width and interfusion on processing and heat treatment strategies.
Hamidreza Javidrad, Bahattin Koc
wiley   +1 more source

Recent Advances in Fiber-Optic Sensors for the Detection of Inorganic Acidic Gases

Photonic Sensors
An acidic gas is an important basic chemical raw material used for synthesizing fertilizers, insecticides, explosives, dyes, and salts. Alternatively, inorganic acidic gases that leak into the air have harmful effects on the human health, infrastructure,
Lingnan Kong, Yuanke Gong, Xiaoyu Zhong, Yang Liu, Bo Wan, Quanhua Xie, Yuanyuan He, Xiaoling Peng, Haixing Chang, Dengjie Zhong, Huiling Liu, Nianbing Zhong   +11 more
doaj   +1 more source

Optimization for UAV-assisted simultaneous transmission and reception communications in the existence of malicious jammers

Security and Safety
In this paper, we study an unmanned aerial vehicle (UAV)-assisted communication system, where the UAV is dispatched to implement simultaneous transmission and reception (STR) in the existence of multiple malicious jammers.
Huang Zhiyu, Liu Shuzhen, Sheng Zhichao, Yu Hongwen, Masaracchia Antonino   +4 more
doaj   +1 more source

Low-frequency vibration measurement by a dual-frequency DBR fiber laser

Photonic Sensors, 2017
A dual-frequency distributed Bragg reflector (DBR) fiber laser based sensor is demonstrated for low-frequency vibration measurement through the Doppler effect.
Bing Zhang, Linghao Cheng, Yizhi Liang, Long Jin, Tuan Guo, Bai-Ou Guan   +5 more
doaj   +1 more source

Impact of Structural Adhesive Hybridization Strategy on the Performance of In‐Mold Electronics Devices Across Thermoforming and Injection Molding

Advanced Engineering Materials, EarlyView.
In‐mold electronics (IME) undergo complex thermoforming and over‐molding processes that strain device integrity. This study demonstrates how adapting the amount and placement of structural adhesive to local deformation levels preserves electrical functionality.
Francisco Ituriel Arias‐García, Nekane Lozano‐Hernandez, Maria Lluisa Maspoch, Enric Fontdecaba   +3 more
wiley   +1 more source

High temperature fiber optic microphone having a pressure-sensing reflective membrane under tensile stress [PDF]

, 1992
A fiber optic microphone is provided for measuring fluctuating pressures. An optical fiber probe having at least one transmitting fiber for transmitting light to a pressure-sensing membrane and at least one receiving fiber for receiving light reflected ...
Cuomo, Frank W., Hopson, Purnell, Jr., Robbins, William E., Zuckerwar, Allan J.   +3 more
core   +1 more source