Temperature and strain dual-mode response photonic crystal hydrogel array sensor capable of being prepared in large scale, and preparation method and application of temperature and strain dual-mode response photonic crystal hydrogel array sensor

By constructing a photonic crystal hydrogel array sensor with a dual-network hydrogel-filled three-dimensional photonic crystal structure, the problems of size limitation and poor durability in existing technologies are solved, and large-area, multi-point high-resolution optoelectronic dual-mode sensing is achieved. It has self-repairability and stable electrical signal output, and is suitable for wearable devices and human-computer interaction.

CN120682541APending Publication Date: 2025-09-23SOUTH CHINA UNIV OF TECH
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Patent Information

Application Number
CN202510920366.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-04
Publication Date
2025-09-23

AI Technical Summary

Technical Problem

Existing photonic crystal hydrogel array sensors have problems such as limited size, insufficient mechanical strength, and poor durability. It is difficult to achieve large-area, multi-point high-resolution, scalable, self-repairing and recyclable optoelectronic dual-mode sensing, and they lack passive visual display and stable electrical signal output.

Method used

A three-dimensional photonic crystal structure is filled with a double-network hydrogel prepolymer liquid. Through cutting and polydimethylsiloxane encapsulation, a large-area, crack-free photonic crystal hydrogel array sensor is constructed. Thermosensitive monomers, zwitterionic conductive monomers, modified nanocellulose and dynamic borate crosslinkers are used for photocuring to form a sensor with visual-electrical signal dual-mode output, self-healing properties and temperature and strain response capabilities.

Benefits of technology

It realizes large-scale and multi-point human motion monitoring, has dual response capabilities of high sensitivity and high two-dimensional spatial resolution, and has excellent mechanical strength, self-healing and environmental stability. It is suitable for wearable devices and human-computer interaction fields.

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Abstract

The invention provides a temperature and strain dual-mode response photonic crystal hydrogel array sensor capable of being prepared on a large scale and a preparation method and application thereof. The temperature and strain dual-mode response photonic crystal hydrogel array sensor capable of being prepared on a large scale is obtained by filling a three-dimensional photonic crystal structure with a dual-network hydrogel pre-polymerized solution, curing the three-dimensional photonic crystal structure, cutting the three-dimensional photonic crystal structure and packaging the three-dimensional photonic crystal structure with a polydimethylsiloxane elastic cavity. The multi-array sensor prepared by the invention has the dual response capability of strain and temperature, has a dual-mode monitoring function of visual signal feedback and electric signal output without power supply, has excellent mechanical strength, self-repairing capability and environmental stability, shows the characteristics of high sensitivity, high two-dimensional spatial resolution and the like, and has a wide application prospect. And the human body sensing and recognition capability in a complex dynamic scene is remarkably improved. The method is suitable for multi-point motion monitoring, dynamic environment perception and low-power-consumption application scenes, and is suitable for the fields of wearable electronics, intelligent flexible devices, human-computer interaction and the like.
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Citation Information

Patent Citations

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    CN110183703B

  • Flexible pressure or strain mapping device, method for producing same, pressure mapping system, method for real-time digitalization and visualization of computer-implemented graphical

    CN119213286A

  • Photonic crystal laser and strain measuring device

    US20180041011A1