Non-contact sensing-actuating composite material and preparation method therefor

Through the triple effect of dielectric polarization-electrothermal conversion-thermal response actuation, the non-contact sensing-actuation composite material with a nanoscale multilayer network structure realizes logical perception and flexible actuation of the three-dimensional motion of external objects. It solves the problems of contact damage, high power consumption and special environmental excitation of traditional smart materials, and provides a sensing-actuation integrated solution with low driving voltage and fast response.

WO2026123205A1 Publication Date: 2026-06-18SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
Filing Date
2024-12-10
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing smart materials suffer from unavoidable damage and power consumption issues due to contact sensing in integrated sensing and actuation designs. Non-contact sensing has limited functionality, requires special environmental excitation, and has high driving voltage, making it difficult to achieve logical perception and safe interaction with the movement of external objects.

⚗Method used

The non-contact sensing-actuation composite material with a nanoscale multilayer network structure uses the triple effect of dielectric polarization-electrothermal conversion-thermal response actuation to sense the three-dimensional motion of external objects using an electrostatic field, and drives the material actuation through the electrothermal effect of silver nanowire layers, thus realizing the integration of non-contact sensing and actuation.

🎯Benefits of technology

It achieves logical perception and flexible actuation of the three-dimensional motion of external objects, with a perception distance of up to 20cm, a driving voltage as low as 2V, and a response speed of less than 1s. It is suitable for the perception and actuation of everyday objects in non-special environments, simplifies the manufacturing process, and is easy to industrialize.

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Abstract

Disclosed are a non-contact sensing-actuating composite material and a preparation method therefor. The method comprises: pre-stretching a shape-memory fiber membrane to generate deformation, and then cooling and fixing same to obtain a sensing-actuating layer; preparing an electrode on a partial region of the upper surface of the sensing-actuating layer; laminating the sensing-actuating layer on an incompletely cured polydimethylsiloxane film, and allowing same to stand for complete curing, wherein the surface of the sensing-actuating layer on which the electrode is prepared faces the polydimethylsiloxane film; and coating a silver nanowire dispersion onto the surface of the sensing-actuating layer on which no electrode is prepared, and drying same. The composite material of the present invention exhibits a nanoscale multi-layer network structure, integrates autonomous sensing and actuation on the basis of the triple effect of "dielectric polarization-electrothermal conversion-thermal response actuation", establishes a complete and accurate logical relationship with three-dimensional motion, and triggers the material to perform flexible actuation, thereby achieving non-contact "sensing-actuation" integration.
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