Surface Microstructure Replication for Large-Area Non-Deterministic Patterns
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Solution Overview
Problem
Current technologies are limited in creating non-deterministic surface microstructures on larger areas and are economically inefficient.
Innovation Solution
A method involving a 3D surface profilometer to acquire digital data of an original microstructure, processing this data to create structure describing data, and using writing tools like printing, laser ablation, or lithography to produce desired surface microstructures on target materials, allowing for scaling and composition of microstructures to achieve specific properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If non-deterministic surface microstructures are created using self-organizing mechanisms, then the microstructure dimensions are determined by process conditions and material properties, but the structure dimensions can only be varied within a limited range and the production area is limited
Solution Approach 1:
The invention divides the surface microstructure creation process into two independent parts: (1) acquiring original microstructure data using a 3D surface profilometer, and (2) creating new microstructures by writing with a writing tool using processed digital data. This segmentation allows the original microstructure to be captured once and then replicated and scaled multiple times on different areas, overcoming the limitation of non-deterministic methods that can only produce microstructures on limited areas with fixed dimensions.
Solution Approach 2:
The invention creates a digital copy of the original surface microstructure through 3D surface profilometry, then uses this digital data to generate new microstructures via writing tools. This copying process enables the exact reproduction of complex non-deterministic microstructures on larger areas that would be economically inefficient to produce from scratch using traditional self-organizing methods.
2Adaptability or versatility
If deterministic structures are designed with computer programs and transferred using ablation or lithographic techniques, then the dimension of structures can be freely selected, but the process complexity increases
Solution Approach 1:
The invention performs preliminary action by acquiring and processing the digital data of the original microstructure before creating the new structure. The 3D surface profilometer captures the original microstructure, and the digital data is processed to create structure describing data that can be directly written by the writing tool. This preliminary data acquisition and processing step simplifies the overall process compared to designing deterministic structures from scratch with computer programs.
3Reliability
If self-organizing mechanisms are used to create surface microstructures, then the microstructures are non-deterministic, but the structure dimensions are determined by process conditions and material properties limiting variability
Solution Approach 1:
The invention replaces the mechanical self-organizing process with a digital system. Instead of relying on process conditions and material properties to determine microstructure dimensions, the invention uses a 3D surface profilometer to capture the original microstructure and digital data processing to create structure describing data. This substitution allows precise control over microstructure dimensions while maintaining the non-deterministic characteristics of the original microstructure.
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
Enables the production of complex, non-deterministic surface microstructures on larger areas with tailored properties for light interaction and liquid crystal alignment, applicable in security features, antireflection, and various optical applications.
Implementation Method 1
acquiring digital data of the original surface microstructure topography with the 3D surface profilometer
Implementation Method 2
creating the desired surface microstructure in or on the target material comprising writing with the writing tool a structure in or on the target material
Implementation Method 3
The dimension of such deterministic structures can be freely selected. Other technologies, which are for example based on self-organizing mechanisms, provide non-deterministic surface microstructures
Data Source
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AI summary
The present invention relates to methods for designing and creating surface microstructures and includes 3D scanning of existing surface microstructures as well as transferring processed data of the scanned microstructures to a material using a proper writing tool. Surface microstructures created with the methods of the invention have a wide field of applications, such as for security features in optical security elements, alignment layers for liquid crystals, antireflection surfaces, AR/VR applications, optical filters, light coupling, micro-optics, as well as for light management in many different technical areas.