Results 31 to 40 of about 36,597 (305)

Optical Fiber Tip Sensor for the Measurement of Glucose Aqueous Solutions

IEEE Photonics Journal, 2018
A reflective fiber optic sensor based on multimode interference for the measurement of refractive index variations in glucose aqueous solutions is proposed.
Susana Novais, Catarina I. A. Ferreira, Marta S. Ferreira, Joao L. Pinto   +3 more
doaj   +1 more source

Microfluidic reflective-mode differential sensor based on open split ring resonators (OSRRs)

International Journal of Microwave and Wireless Technologies, 2020
AbstractThis paper proposes a differential sensor based on a pair of open split ring resonators (OSRR) operating in reflection. The output signal is thus the differential reflection coefficient of both resonators, intimately related to their dielectric loading. Thus, for identical loads in both sensing resonators, the individual reflection coefficients
J. Muñoz-Enano, P. Vélez, M. Gil, F. Martín   +3 more
openaire   +3 more sources

Energy-efficient sensing in wireless sensor networks using compressed sensing [PDF]

, 2014
Sensing of the application environment is the main purpose of a wireless sensor network. Most existing energy management strategies and compression techniques assume that the sensing operation consumes significantly less energy than radio transmission ...
Razzaque, Mohammad Abdur, Razzaque, Mohammad A.; id_orcid, Dobson, Simon Andrew, Mohammad Razzaque, Simon Dobson, Dobson, Simon   +5 more
core   +1 more source

Differential Intensity Modulation Refractometer Based on SNS Structure Cascaded Two FBGs

IEEE Photonics Journal, 2017
A differential intensity modulation refractometer based on single-mode-no-core-single-mode (SNS) structure cascaded with two fiber Bragg gratings (FBGs) is proposed.
Cheng Zhang, Shan Xu, Junfa Zhao, Hongqiang Li, Hua Bai, Changyun Miao   +5 more
doaj   +1 more source

Distributed state estimation for uncertain Markov-type sensor networks with mode-dependent distributed delays

, 2011
This the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2012 John Wiley & Sons, Ltd.In this paper, the distributed state estimation problem is investigated for a class of sensor ...
Zidong Wang, Liu, X, Liang, J, Wang, Z, Xiaohui Liu, Jinling Liang   +5 more
core   +1 more source

Bio-Inspired Photoelectric Dual-Mode Sensor Based on Photonic Crystals for Human Motion Sensing and Monitoring

Gels
Photoelectric dual-mode sensors, which respond to strain signal through photoelectric dual-signals, hold great promise as wearable sensors in human motion monitoring.
Wenxiang Zheng, Zhibin Wang, Mengnan Zhang, Yanxin Niu, Yuchuan Wu, Pengxin Guo, Niu Zhang, Zihui Meng, Ghulam Murtaza, Lili Qiu   +9 more
doaj   +1 more source

Design, Fabrication and Testing of a High-Sensitive Fibre Sensor for Tip Clearance Measurements

Sensors, 2018
A highly sensitive fibre bundle-based reflective optical sensor has been designed and fabricated for Tip Clearance measurements in a turbine rig. The sensor offers high spatial and temporal resolution.
Gaizka Durana, Josu Amorebieta, Ruben Fernandez, Josu Beloki, Eneko Arrospide, Iker Garcia, Joseba Zubia   +6 more
doaj   +1 more source

Planar Phase-Variation Microwave Sensors for Material Characterization: A Review and Comparison of Various Approaches

Sensors, 2021
Planar phase-variation microwave sensors have attracted increasing interest in recent years since they combine the advantages of planar technology (including low cost, low profile, and sensor integration with the associated circuitry for post-processing ...
Jonathan Muñoz-Enano, Jan Coromina, Paris Vélez, Lijuan Su, Marta Gil, Pau Casacuberta, Ferran Martín   +6 more
doaj   +1 more source

A reflection-mode fibre-optic sensor for breath carbon dioxide measurement in healthcare

Sensing and Bio-Sensing Research, 2019
A reflection-mode carbon dioxide (CO2) fibre optic sensor (FOS) is developed based on the colorimetric change of pH indicator dye thymol blue. The CO2 sensing film comprises thymol blue and tetramethylammonium hydroxide in the form of an ion pair doped in an organically modified silica film.
LiangLiang Liu, FengHuan Hao, Stephen P. Morgan, Ricardo Correia, Andrew Norris, Serhiy Korposh   +5 more
openaire   +3 more sources

Efficient fiber Bragg grating and fiber Fabry-Pe'rot sensor multiplexing scheme using a broadband pulsed mode-locked laser

, 2005
A pulsed broadband mode-locked laser (MLL) combined with interferometric interrogation is shown to yield an efficient means of multiplexing a large number of fiber Bragg grating (FBG) or fiber Fabry-Perot (FFP) strain sensors with high performance ...
Flockhart, G M H, Cranch, G A, Kirkendall, C K   +2 more
core   +1 more source