Results 61 to 70 of about 28,999 (297)

Design of Transmission-Type Refractive Index Sensor, Based on Silica Planar Lightwave Circuit Using Combination of Refractive Angle and Phase Measurements

Sensors, 2019
A transmission-type refractive index sensor, based on planar lightwave circuit (PLC) technology is proposed. In the proposed structure, we introduce a combination of coarse measurements, using the dependence of the angle of refraction and fine ...
Koichi Maru
doaj   +1 more source

Composite material process monitoring using optical fibre grating sensors [PDF]

, 2008
In this thesis a long period grating (LPG) based sensor is investigated as a possible alternative to current process monitoring sensors used in the manufacture of composites to monitor cure. An LPG is demonstrated as a means of monitoring the cure of a
Buggy, Stephen J.
core  

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Optofluidic refractive index sensor based on asymmetric diffraction

Optics Express, 2019
A novel optofluidic refracrtive index (RI) sensor was proposed based on asymmetric Fraunhofer diffraction. In-plane optofluidic lens, light source, slit, diffraction pattern visualization zone and optical path were integrated into the microfluidic networks to avoid the manual alignment of the optical components as well as to reduce the cost of external
Xin Tu, Yingdong Luo, Tianye Huang, Jinqiang Gan, Chaolong Song   +4 more
openaire   +2 more sources

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Nanoscale temperature sensors based on MIM waveguide coupling and ring-embedded nanostructures

Frontiers in Physics
This study presents a novel refractive index sensor based on Fano resonance, incorporating a metal-insulator-metal (MIM) waveguide coupled with a circular ring structure (CRC).
Hongfu Chen, Hongfu Chen, Hongfu Chen, Shubin Yan, Shubin Yan, Yuhao Cao, Yuhao Cao, Yuhao Cao, Wen Jiang, Wen Jiang, Wen Jiang, Xiaoran Yan, Xiaoran Yan, Chong Wang, Chong Wang, Guang Liu, Guang Liu, Aiwei Xu, Aiwei Xu, Taiquan Wu, Taiquan Wu, Yuntang Li   +21 more
doaj   +1 more source

Loop-mirror-based slot waveguide refractive index sensor

AIP Advances, 2012
Loop mirror has been widely used in fiber optical devices and systems for it provides a smart way to make use of the fiber birefringence properties and can enhance the sensitivity greatly.
Jun-long Kou, Fei Xu, Yan-qing Lu
doaj   +1 more source

Refractometric Sensing with Periodic Nano-Indented Arrays: Effect of Structural Dimensions

Sensors, 2019
Fabrication and sensor application of a simple plasmonic structure is described in this paper. The sensor element consists of nano-patterned gold film brought about from two-dimensional periodic photoresist templates created by holographic laser ...
Daniel J. Carney, Halldor G. Svavarsson, Hafez Hemmati, Alexander Fannin, Jae W. Yoon, Robert Magnusson   +5 more
doaj   +1 more source

A Highly Sensitive Fiber Optic Sensor Based on Two-Core Fiber for Refractive Index Measurement [PDF]

, 2013
A simple and compact fiber optic sensor based on a two-core fiber is demonstrated for high-performance measurements of refractive indices (RI) of liquids.
José Javier Sánchez Mondragón
core  

Review of long period fiber gratings written by CO₂ laser

, 2010
This paper presents a systematic review of long period fiber gratings (LPFGs) written by the CO2 laser irradiation technique. First, various fabrication techniques based on CO2 laser irradiations are demonstrated to write LPFGs in different types of ...
Yiping Wang, Wang, Yiping
core   +1 more source