Results 81 to 90 of about 297,701 (361)
Novel Fiber Optic Accelerometer System Using Geometric Moiré Fringe [PDF]
, 2005 This paper presents an innovative fiber optic accelerometer system for monitoring vibration of large-size structures. The system is composed of one (or multiple) sensor head and a control unit for driving the sensor and processing sensor data.
Feng, Maria Q., Kim, Dae-Hyun
core +2 more sources
Photonic Sensors, 2017 Based on the principle of the fiber Bragg grating, a new type of fiber-optic pressure sensor for axial force measurement of transformer winding is designed, which is designed with the structure of bending plate beam, the optimization of the packaging ...
Yuan Liu +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.We develop a one‐step spray coating approach to coat the fluorinated graphene (FG) nanosheet onto the N95 respirators. The spray‐coated superhydrophobic N95 respirators can effectively repel respiratory droplets off instantaneously and prevent SARS‐CoV‐2 virus accumulation on the surface.
Fengjie He +4 more
wiley +1 more source
A Partial Discharge Detection Approach in Distribution Cabinets Using a Mach–Zehnder Interferometer
SensorsDistribution cabinets are of paramount importance in power supply systems. Internal partial discharge may result in power interruption or even the outbreak of fire.
Junliang Wang, Ying Zhang, Xiang Gu
doaj +1 more source
Micro-displacement sensors based on plastic photonic bandgap Bragg fibers [PDF]
arXiv, 2013 We demonstrate an amplitude-based micro-displacement sensor that uses a plastic photonic bandgap Bragg fiber with one end coated with a silver layer. The reflection intensity of the Bragg fiber is characterized in response to different displacements (or bending curvatures).
arxiv
Optical Fiber-Based Needle Shape Sensing in Real Tissue: Single Core vs. Multicore Approaches [PDF]
arXiv, 2023 Flexible needle insertion procedures are common for minimally-invasive surgeries for diagnosing and treating prostate cancer. Bevel-tip needles provide physicians the capability to steer the needle during long insertions to avoid vital anatomical structures in the patient and reduce post-operative patient discomfort.
arxiv
Advanced Engineering Materials, EarlyView.Periodic submicron features are fabricated on 304 stainless steel using single and double femtosecond laser pulses. By adjusting polarization, fluence, and inter‐pulse delay, 1D and 2D nanostructures are formed. Enhanced hydrophobicity and dense surface‐enhanced Raman spectroscopy hotspots enable analyte detection down to 10−10 M with good ...
Balaji Baskar +3 more
wiley +1 more source
New multiplexing scheme for monitoring fiber optic Bragg grating sensors in the coherence domain
, 1997 A new multiplexing scheme for monitoring fiber optic Bragg gratings in the coherence domain has been developed. Grating pairs with different grating distances are distributed along a fiber line, and interference between their reflections is monitored ...
Dakin, J.P. +5 more
core +1 more source
In-Vivo Evaluation of a Fiber-Optic Splanchnic Photoplethysmographic Sensor during Open Laparotomy [PDF]
, 2009 There is a need for a reliable and continuous monitoring of abdominal organ oxygen saturation (SpO2). Splanchnic ischemia may ultimately lead to cellular hypoxia and necrosis and may well contribute to the development of multiple organ failures and ...
Hickey, M. +4 more
core +1 more source
Liquid-core low-refractive-index-contrast Bragg fiber sensor [PDF]
, 2011 We propose and experimentally demonstrate a low-refractive-index-contrast hollow-core Bragg fiber sensor for liquid analyte refractive index detection. The sensor operates using a resonant sensing principle- when the refractive index of a liquid analyte in the fiber core changes, the resonant confinement of the fiber guided mode will also change ...
arxiv +1 more source