Monitoring of pipelines subjected to interactive bending and dent using distributed fiber optic sensors

Tan, Xiao; Poorghasem, Sina; Huang, Ying; Feng, Xin; Bao, Yi

doi:10.1016/j.autcon.2024.105306

Cited by 11 publications

(1 citation statement)

References 40 publications

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“…It is more common to combine 3D PCs with high toughness and high elasticity polymers to achieve the monitoring of strain. Other configurations of PCs such as surface plasmon resonance-based photonic crystal fiber (PCF) sensors and PCF grating sensors can also be used for stress and strain monitoring. While fabricating highly sensitive and excellent robustness sensors is still an open challenge for 3D PC strain sensor.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Low-Angle-Dependent Photonic Crystal Elastomer for Highly Sensitive Visual Strain Sensor

Tan,

Sun,

et al. 2024

ACS Appl. Mater. Interfaces

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Photonic crystals (PCs) possess unique photonic band gap properties that can be used in the field of sensors and smart displays if modulated on the micronano structure. Both nonclose-packed (NCP) structure and high refractive index (RI) contrast of PC play important roles in response sensitivity during stretching. Herein, we constructed an NCP-structured PC strain sensor with high RI by a novel coating−etching strategy. Stretchinduced changes in structural color correspond to the strength of the force, enabling the detection of the strength of the acting force by the naked eye. The flexible 3D cross-linked network constructed by poly(ethylene glycol) phenyl ether acrylate and pentaerythritol tetrakis(3-mercaptopropionate) endows the sensor with excellent elasticity and robustness. The designed PC strain sensor achieves high mechanochromic sensitivity (∼8.3 nm/%, 0.02 to 4.21 MPa) and a substantial reflection peak shift (Δλ = 249 nm). More importantly, the high RI contrast (Δn = 0.43) between CdS and polymers imparts isotropic optical properties, ensuring a broad viewing angle while avoiding misleading signals. The research provides a novel fabrication strategy to construct sensitive PC strain sensors, expanding the prospective applicability to human movement monitoring and secure message encryption.

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Section: Introductionmentioning

confidence: 99%