一种具有各向异性光散射的折叠表面的制备方法及其应用

By spin-coating a protein solution onto a transparent elastic substrate and patterning it, combined with tensile strain control, the problems of complex preparation and difficulty in large-scale application in existing technologies have been solved. This has enabled the simple and easy preparation of anisotropic light scattering surfaces, which have humidity responsiveness and pattern rewriting capabilities, and are suitable for optical devices and intelligent recognition fields.

CN117924771BActive Publication Date: 2026-07-17NANJING UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV
Filing Date
2024-01-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies for preparing anisotropic light scattering metasurfaces suffer from complex processes and difficulty in large-scale application, and also lack responsiveness to environmental humidity.

Method used

By spin-coating a protein solution onto a transparent elastic substrate and patterning it, combined with tensile strain control, a folded surface with anisotropic light scattering is prepared. The protein film is removed by oxygen plasma etching or laser engraving to control the light scattering intensity, and the pattern is rewritten by water vapor treatment.

Benefits of technology

It enables simple and easy large-area fabrication of anisotropic light scattering surfaces, with humidity responsiveness and pattern rewriting capabilities, suitable for optical devices and intelligent recognition fields, and has the function of switching between specular reflection and diffuse reflection.

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Abstract

本发明涉及一种具有各向异性光散射的折叠表面的制备方法,将透明的弹性基底表面氧化后,旋涂一层蛋白溶液,在相对湿度为40%‑60%的环境中静置后得到蛋白膜‑弹性基底双层系统,根据设计好的图案,将双层系统中的蛋白膜层图案化,得到图案化的蛋白膜‑弹性基底双层系统,然后将其两端固定,施加拉力使双层系统产生应变,再释放应力使恢复原始状态,即得。与现有方法相比,该方法简单易行、原料易得,可通过蛋白溶液的浓度与拉伸应变调控折叠结构的尺寸,从而调控各向异性的光散射强度,还可将蛋白膜图案化,并且该折叠表面对湿度有一定响应性,通过水蒸气处理后再次拉伸可实现重写,在信息存储、防伪标识和智能识别领域具有潜在的应用价值。
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