A method for preparing an omega-shaped hydrogel coated optical fiber sensor

By designing an Ω-shaped fiber sensing region, using gold target sputtering, and functionalizing with bacteriophages, the problems of insufficient sensitivity and poor structural stability of hydrogel-coated fiber optic sensors were solved, achieving high sensitivity and stable detection in complex food matrices, making them suitable for food safety testing.

CN122409592APending Publication Date: 2026-07-17ZHEJIANG WANLI UNIV
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG WANLI UNIV
Filing Date
2026-05-19
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing hydrogel-coated fiber optic sensors suffer from insufficient sensitivity, lack of orientation recognition capability, poor structural stability, complex preparation, and difficulty in adapting to the characteristics of hydrogel materials, thus failing to meet the needs of screening for trace pathogens in complex food matrices.

Method used

Employing an Ω-shaped fiber optic sensing area design, combined with gold target sputtering, cationic photocurable hydrogel coating, and phage functionalization, this method achieves high sensitivity, orientation recognition, and structural stability by fabricating abrupt curvature changes, axisymmetry, and loop design in the Ω-shaped structure. It is adapted to the characteristics of hydrogel materials and is suitable for the precise detection of pathogenic bacteria in food.

Benefits of technology

It achieves high sensitivity, orientation recognition capability, structural stability and compactness, and is adapted to the characteristics of hydrogel materials. It can realize accurate and stable detection of pathogenic bacteria in complex food matrices, with good repeatability and recovery rate, meeting the needs of trace detection in food safety.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122409592A_ABST
    Figure CN122409592A_ABST
Patent Text Reader

Abstract

The application discloses a preparation method of an Omega-shaped hydrogel coating optical fiber sensor, and applies to the cross technical field of optical fiber sensing and food safety detection, and comprises the following steps: cutting an optical fiber, stripping a plastic coating at a middle position, and taking the prepared section as a preparation section of an optical fiber sensing area; selecting a corresponding size of a mandrel assembly hole in a preparation device, inserting a preparation mandrel, aligning the preparation section with a fire tank nozzle, preparing around the shaped mandrel, and obtaining an Omega-shaped optical fiber sensing area; performing gold target sputtering treatment on the optical fiber sensing area, immersing the optical fiber sensing area in a cationic photocuring hydrogel precursor solution, and irradiating under ultraviolet light to obtain an optical fiber sensing area with a hydrogel layer; immersing the optical fiber sensing area in a phage solution for incubation, immersing the optical fiber sensing area in a bovine serum albumin neutral solution for incubation at room temperature, and obtaining an Omega-shaped hydrogel coating optical fiber sensor. The prepared hydrogel coating optical fiber sensor has the characteristics of high sensitivity, direction recognition capability, structural stability, compactness and biological compatibility.
Need to check novelty before this filing date? Find Prior Art