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Flexible photon pressure sensor, preparation method and application thereof

A pressure sensor and photon technology, applied in the field of sensing materials, can solve problems such as limited sensitivity and limited viscoelasticity, and achieve the effects of high sensitivity, good elasticity and mechanical properties, and strong practical promotion value

Pending Publication Date: 2022-03-01
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for acoustic testing in marine environments, it has limited sensitivity and limited viscoelasticity

Method used

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  • Flexible photon pressure sensor, preparation method and application thereof
  • Flexible photon pressure sensor, preparation method and application thereof
  • Flexible photon pressure sensor, preparation method and application thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0033] A method for preparing a flexible photonic pressure sensor, comprising the steps of:

[0034] S1. Preparation of photonic crystal precursor liquid:

[0035] Monodisperse polystyrene microspheres with particle sizes of 160nm, 205nm, 235nm, 240nm, 275nm, 300nm, and 335nm were prepared by soap-free emulsion polymerization (with a particle size range of 100nm to 1000nm). The solid content of the emulsion was about 10% (w / v), the steps are as follows:

[0036] Weigh 0.175g of ammonium persulfate into a beaker, add 20mL of deionized water to dissolve it. Measure 4.33mL, 3.58mL, 3.08mL, 3.00mL, 2.42mL, 2.00mL, 1.42mL of acrylic acid and 38.5mL of styrene, dissolve in 300mL of deionized water, stir in a 500mL four-neck flask at 250r / min, open Cooling water, nitrogen gas bubbling for 20min, then heating in an oil bath to 70°C to stabilize, adding ammonium persulfate aqueous solution, turning on the cooling water, stirring and reacting for 7h under the protection of nitrogen ga...

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Abstract

The invention discloses a flexible photon pressure sensor, a preparation method and application thereof. The preparation method comprises the following steps: preparing a photonic crystal precursor solution; preparing a flexible substrate precursor solution, wherein the flexible substrate precursor solution contains sodium alginate; and compounding the photonic crystal precursor solution and the flexible matrix precursor solution to obtain the flexible photon pressure sensor. The sensor can generate corresponding optical signal changes for the deformation of the flexible substrate; and the response is real-time, is not influenced by propagation distance, electromagnetic interference or noise, and has better mechanical property and higher sensitivity.

Description

technical field [0001] The invention relates to the technical field of sensing materials, in particular to a flexible photonic pressure sensor, a preparation method and an application thereof. Background technique [0002] Flexible sensors with high sensitivity and multifunctional integrated response are of great significance for applications such as general health, artificial intelligence, and human-machine dialogue. As the marine environment continues to deepen, it has been noticed that sound waves are also a type of pressure wave. For the detection of the marine environment, hydrophones are usually used. The sensitivity of sensors in traditional hydrophones is limited, and it is impossible to truly feed back the ocean environment. [0003] Structural color based on the width of the photonic crystal bandgap causes reflection of light at a given wavelength. The reflection wavelength is determined by the structural parameters of the photonic crystal. Any change in the st...

Claims

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Application Information

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IPC IPC(8): G01L1/24
CPCG01L1/24
Inventor 刘向阳王晓于瑞
Owner XIAMEN UNIV
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