Stretchable Optical Elements via Cluster Beam Implantation
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Solution Overview
Problem
Existing methods for producing stretchable and deformable optical devices, such as diffraction gratings, face challenges with metal evaporation techniques, which result in delamination, buckling, and poor adhesion to elastomeric substrates, leading to suboptimal optical quality and performance.
Innovation Solution
The implementation of cluster beam implantation to deposit neutral nanoclusters of metals, alloys, or their oxides onto an elastomeric support, creating a nanocomposite layer that enhances the optical properties and durability of the devices while maintaining deformability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal evaporation technique is used to deposit reflective coating on elastomeric substrate, then the optical element can be produced, but the coating suffers from delamination, buckling, and poor adhesion
Solution Approach 1:
The patent changes the deposition parameters by using cluster beam implantation instead of conventional metal evaporation. This technique deposits metal clusters at lower temperatures and with different kinetic energy distributions, resulting in better adhesion to the elastomeric substrate without causing delamination or buckling upon stretching.
Solution Approach 2:
The patent creates a composite structure by depositing metal nanoclusters into the elastomeric substrate matrix. This composite approach allows the metal coating to integrate with the flexible substrate, maintaining adhesion during deformation while providing the necessary reflective optical properties.
2Adaptability or versatility
If the optical element is made stretchable and deformable, then it can be applied to complex surfaces, but the optical quality deteriorates after deformation
Solution Approach 1:
The patent designs the optical element with dynamic properties by using an elastomeric substrate that can reversibly deform. The metal cluster coating is applied in a way that maintains the periodic structure during stretching and relaxation cycles, allowing the element to adapt to different surface geometries while preserving optical functionality.
Solution Approach 2:
The patent utilizes the elastic parameters of the elastomeric material to allow reversible deformation. The metal clusters are deposited at concentrations and depths that maintain the diffraction grating periodicity even when the substrate is stretched, thereby maintaining optical quality across different deformation states.
3Ease of manufacture
If conventional metal deposition is used, then the process is simple, but the adhesion to elastomeric substrate is poor
Solution Approach 1:
The patent replaces the conventional thermal evaporation mechanism with cluster beam implantation. This substitution changes the deposition mechanism from thermal condensation to kinetic implantation of metal clusters, which penetrate and anchor into the elastomeric substrate, dramatically improving adhesion while maintaining process feasibility.
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
This approach allows for the production of stretchable and deformable optical elements that maintain optical quality and functionality even after significant deformation, with improved adhesion and reduced defects, enabling efficient light diffraction and adaptability to complex surfaces.
Implementation Method 1
The implementation of cluster beam implantation to deposit neutral nanoclusters of metals, alloys, or their oxides onto an elastomeric support
Implementation Method 2
creating a nanocomposite layer that enhances the optical properties and durability of the devices
Implementation Method 3
with improved adhesion and reduced defects, enabling efficient light diffraction and adaptability to complex surfaces
Implementation Method 4
enabling efficient light diffraction and adaptability to complex surfaces
Data Source
AI summary
It is described a method for the production of a fully or partially reflective stretchable and deformable optical element, comprising the implantation in at least one surface of an elastomeric support, by a technique of “Cluster Beam Implantation”, of neutral nanoclusters of a material selected among one or more metals, their alloys, their oxides or mixtures thereof, thus obtaining in said support a nanocomposite layer, possibly emerging at the surface of said element, and said implantation taking place by:uniformly implanting said nanoclusters in a surface of said elastomeric support, wherein said surface has a molded profile essentially corresponding to the profile of the optical element to be produced; orselectively implanting said nanoclusters in a flat surface of said elastomeric support; oruniformly implanting a first layer of said nanoclusters in a surface of said elastomeric support, and then selectively implanting a second layer of said nanoclusters onto the first nanoclusters layer thus obtained.