Results 61 to 70 of about 92,601 (341)

A Novel High Sensitivity Refractive Index Sensor Based on Multi-Core Micro/Nano Fiber

Photonic Sensors, 2019
A refractive index sensor based on a multi-core micro/nano fiber is proposed for low refractive index solutions. At first, the mode field distribution of the tapered multi-core fiber is analyzed with the finite element model (FEM).
Yuefeng Qi, Jin Zhang, Qi Feng, Xin Zhang, Yanyan Liu, Ying Han   +5 more
doaj   +1 more source

Refractive index sensor using microfiber-based Mach–Zehnder interferometer [PDF]

Optics Letters, 2011
A simple and robust refractive index (RI) sensor based on a Mach-Zehnder interferometer has been demonstrated. A section of optical microfiber drawn from silica fiber is employed as the sensing arm. Because of the evanescent field, a slight change of the ambient RI will lead to the variation of the microfiber propagation constant, which will further ...
Sun, Qizhen, Liang, Ruibing, Shum, Perry Ping, Liu, Deming, Wo, Jianghai, Wang, Guanghui, Cui, Ying   +6 more
openaire   +3 more sources

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

Sensitivity enhancement in evanescent optical waveguidesensors [PDF]

, 2000
It is shown, that the sensitivity of the effective refractive index on the cladding index in evanescent optical waveguide sensors, can be larger than unity.
Hoekstra, H.J.W.M., Lambeck, P.V., Parriaux, O., Veldhuis, G.J.   +3 more
core   +2 more sources

Hybrid Auxetic Architectures: Integrating Curvature‐Driven Design for Enhanced Mechanical Tunability and Structural Performance

Advanced Engineering Materials, EarlyView.
Curvature‐tuned auxetic lattices are designed, fabricated, and mechanically characterized to reveal how geometric curvature governs stretchability, stress redistribution, and Poisson's ratio evolution. Photoelastic experiments visualize stress pathways, while hyperelastic simulations quantify deformation mechanics.
Shuvodeep De, Giovanni Meli, Meysam Khalighian, Anahita Emami   +3 more
wiley   +1 more source

Dual-Core Photonic Crystal Fiber Plasmonic Refractive Index Sensor: A Numerical Analysis

Photonic Sensors, 2018
A numerical analysis on dual core photonic crystal fiber (DC-PCF) based surface plasmon resonance (SPR) refractive index sensor is presented. The guiding parameters and required sensing performances are examined with finite element method (FEM) based ...
Alok Kumar Paul, Ajay Krishno Sarkar, Abdul Khaleque   +2 more
doaj   +1 more source

Photonic crystal fiber half-taper probe based refractometer [PDF]

, 2014
A compact singlemode - photonic crystal fiber - singlemode fiber tip (SPST) refractive index sensor is demonstrated in this paper. A CO2 laser cleaving technique is utilised to provide a clean-cut fiber tip which is then coated by a layer of gold to ...
Bo, Lin, Brambilla, Gilberto, Ding, Ming, Farrell, Gerald, Guan, Chunying, Semenova, Yuliya, Sun, Weimin, Wang, Pengfei, Yuan, Libo   +8 more
core   +2 more sources

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

Advanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart, Jonas Schmidt, Anastasiya Toenjes, Johanna Eisenträger   +3 more
wiley   +1 more source

Analysis of the water-soluble vitamins based on MIM waveguide structure and Fano resonance

Heliyon, 2023
Fano resonance (FR) is extremely sensitive to extremely small changes in the surrounding environment. We first propose an optical nano-refractive index sensor based on Fano resonance, which is applied to the identification of water-soluble vitamins B1 ...
Yuan Shangbo, Jun Zhu, Jinguo Yin
doaj   +1 more source

Integrated collinear refractive index sensor with Ge PIN photodiodes

, 2018
Refractive index sensing is a highly sensitive and label-free detection method for molecular binding events. Commercial implementations of biosensing concepts based on plasmon resonances typically require significant external instrumentation such as ...
Augel, Lion, Bechler, Stefan, Fischer, Inga A., Kawaguchi, Yuma, Körner, Roman, Schulze, Jörg, Uchida, Hironaga   +6 more
core   +2 more sources