Results 11 to 20 of about 4,761 (240)

Challenges in Adapting Fibre Optic Sensors for Biomedical Applications [PDF]

Biosensors
Fibre optic sensors (FOSs) have developed as a transformative technology in healthcare, often offering unparalleled accuracy and sensitivity in monitoring various physiological and biochemical parameters.
Sahar Karimian, Muhammad Mahmood Ali, Marion McAfee, Waqas Saleem, Dineshbabu Duraibabu, Sanober Farheen Memon, Elfed Lewis   +6 more
doaj   +2 more sources

Optical fibre based real-time measurements during an LDR prostate brachytherapy implant simulation: using a 3D printed anthropomorphic phantom

Scientific Reports, 2021
An optical fibre sensor based on radioluminescence, using the scintillation material terbium doped gadolinium oxysulphide (Gd2O2S:Tb) is evaluated, using a 3D printed anthropomorphic phantom for applications in low dose-rate (LDR) prostate brachytherapy.
P. Woulfe, F. J. Sullivan, L. Byrne, A. J. Doyle, W. Kam, M. Martyn, S. O’Keeffe   +6 more
doaj   +1 more source

Analysis and experiment on simultaneous measurement of strain and temperature by etched and un-etched FBG pair

Results in Optics, 2021
This paper presents analysis and experiment on simultaneous measurement of strain and temperature using pair of etched and un-etched fiber Bragg grating (FBG) fabricated in a single mode glass optical fiber.
Jitendra Kumar, Ramakanta Mahakud, Sudhir Kumar, Pankaj K. Saini, Om Prakash, Sudhir K. Dixit, Shankar V. Nakhe   +6 more
doaj   +1 more source

Dosimetric Application of Phosphorus Doped Fibre for X-ray and Proton Therapy

Sensors, 2021
Phosphorous-doped silica optical fibres with a core diameter of 4 µm were tested in X-ray and proton fields for application in cancer therapy dosimetry.
Olugbenga J. Olusoji, Crystal Penner, Camille Bélanger-Champagne, Wern Kam, Michael Martyn, Peter Woulfe, Cornelia Hoehr, Sinead O’Keeffe   +7 more
doaj   +1 more source

Nonlinear Hydraulic Pressure Response of an Improved Fiber Tip Interferometric High-Pressure Sensor

Sensors, 2020
We demonstrate a silica diaphragm-based fiber tip Fabry–Perot interferometer (FPI) for high-pressure (40 MPa) sensing. By using a fiber tip polishing technique, the thickness of the silica diaphragm could be precisely controlled and the pressure ...
Wei Huang, Zhe Zhang, Jun He, Bin Du, Changrui Liao, Shen Liu, Guolu Yin, Yiping Wang   +7 more
doaj   +1 more source

A High-Strength Strain Sensor Based on a Reshaped Micro-Air-Cavity

Sensors, 2020
We demonstrate a high-strength strain sensor based on a micro-air-cavity reshaped through repeating arc discharge. The strain sensor has a micro-scale cavity, approximate plane reflection, and large wall thickness, contributing to a broad free spectrum ...
Yanping Chen, Junxian Luo, Shen Liu, Mengqiang Zou, Shengzhen Lu, Yong Yang, Changrui Liao, Yiping Wang   +7 more
doaj   +1 more source

Measurement of Interfacial Adhesion Force with a 3D-Printed Fiber-Tip Microforce Sensor

Biosensors, 2022
With the current trend of device miniaturization, the measurement and control of interfacial adhesion forces are increasingly important in fields such as biomechanics and cell biology.
Mengqiang Zou, Changrui Liao, Yanping Chen, Zongsong Gan, Shen Liu, Dejun Liu, Li Liu, Yiping Wang   +7 more
doaj   +1 more source

Novel Corrugated Long Period Grating Surface Balloon-Shaped Heterocore-Structured Plastic Optical Fibre Sensor for Microalgal Bioethanol Production

Sensors, 2023
A novel long period grating (LPG) inscribed balloon-shaped heterocore-structured plastic optical fibre (POF) sensor is described and experimentally demonstrated for real-time measurement of the ultra-low concentrations of ethanol in microalgal bioethanol
Sanober Farheen Memon, Ruoning Wang, Bob Strunz, Bhawani Shankar Chowdhry, J. Tony Pembroke, Elfed Lewis   +5 more
doaj   +1 more source

An Experimental Study of the Effects of External Physiological Parameters on the Photoplethysmography Signals in the Context of Local Blood Pressure (Hydrostatic Pressure Changes)

Sensors, 2017
A comprehensive study of the effect of a wide range of controlled human subject motion on Photoplethysmographic signals is reported. The investigation includes testing of two separate groups of 5 and 18 subjects who were asked to undertake set exercises ...
Hongwei Yuan, Sven Poeggel, Thomas Newe, Elfed Lewis, Charusluk Viphavakit, Gabriel Leen   +5 more
doaj   +1 more source

Liquid-Crystal-Filled Side-hole Fiber for High-Sensitivity Temperature and Electric Field Measurement

Micromachines, 2019
We propose a highly sensitive sensor based on a nematic liquid-crystal-filled side-hole fiber. The liquid crystal is precisely filled into an air hole of the optical fiber using a method of manually gluing in the fusion splicer.
Yijian Huang, Ying Wang, Chun Mao, Jingru Wang, Han Wu, Changrui Liao, Yiping Wang   +6 more
doaj   +1 more source