Mechanochromic Composite Elastomer Assembly for Tunable Optical Response
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Solution Overview
Problem
Mechanochromic devices that change transparency and/or color in response to mechanical stimuli are not widely available due to complex preparation procedures and the need for specialized equipment.
Innovation Solution
A mechanochromic system comprising a first inorganic/polymer composite layer and a first elastomer layer bonded to form a composite/elastomer assembly, which can be prepared using a scalable and low-cost method, allowing for tunable optical transmittance, wettability, and mechanochromism through uniaxial stretching and releasing, with applications in smart windows and strain sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complicated preparation procedures and specialized equipment are used to make mechanochromic devices, then the optical quality change in response to mechanical force is achieved, but the ease of manufacture deteriorates
Solution Approach 1:
The patent changes the material parameters by using water-soluble or organic-soluble polymers combined with inorganic particles to form composite layers. This allows the mechanochromic devices to be fabricated through simple solution casting and drying processes, eliminating the need for specialized equipment while maintaining reliable optical quality changes in response to mechanical force.
2Ease of manufacture
If simple and scalable preparation methods are used, then the ease of manufacture is improved, but the reliability of mechanochromic response may deteriorate
Solution Approach 1:
The patent employs composite materials consisting of inorganic particles dispersed in water-soluble or organic-soluble polymer matrices. This composite structure ensures reliable mechanochromic response through the synergistic effect of the inorganic particles (providing optical properties) and the polymer matrix (providing mechanical flexibility and solubility), while allowing fabrication through simple solution casting methods.
3Adaptability or versatility
If inorganic/polymer composite layers are used to achieve tunable optical transmittance, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by creating composite layers with specific local compositions of inorganic particles and polymers. By controlling the distribution and concentration of inorganic particles within the polymer matrix, the device achieves tunable optical transmittance and mechanochromic properties without requiring complex multi-layer structures, thus maintaining simplicity while enhancing adaptability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves reversible and durable mechanochromic responses, including transparency changes, luminescence, color alterations, and encryption concealment, with high sensitivity and reversibility, suitable for various applications such as smart windows, self-cleaning surfaces, and strain sensors.
Implementation Method 1
Mechanochromic devices change transparency and/or color in response to mechanical stimuli
Implementation Method 2
a first elastomer layer bonded to the composite layer to form a composite/elastomer assembly
Implementation Method 3
the mechanochromic system undergoes a reversible transparency change, fluorescent luminescence change, fluorescent color change, encryption concealment change
Data Source
AI summary
A mechanochromic system comprising a first inorganic/polymer composite layer; and a first elastomer layer bonded to the composite layer to form a composite/elastomer assembly, methods of making, and methods of use thereof are provided.