Transparent Material Laser Processing via Cavitation Bubble Machining
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Solution Overview
Problem
Conventional methods for micro and nanomachining of transparent materials, such as molding and photolithography, face challenges in productivity, cost, and efficiency, while laser-based techniques like LIPAA and LIBWE are limited by groove depth and require multiple steps, making rapid prototyping difficult.
Innovation Solution
A fabrication method involving the generation of cavitation bubbles in uncured transparent materials using a laser beam, allowing for simple and efficient processing, including the use of a laser beam absorber for plating and the formation of metal wiring, with a transparent material fabrication system that includes a container, laser beam irradiation system, and moving means for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional laser methods (LIPAA/LIBWE) are used for transparent material processing, then material transparency is maintained, but groove depth is limited to several μm and multiple steps are required
Solution Approach 1:
The patent changes the processing parameters by using a pulsed laser beam with specific pulse width (nanosecond to picosecond range) and interval, which generates cavitation bubbles that enable deeper groove formation in a single step, resolving the contradiction between groove depth and processing steps
Solution Approach 2:
The patent utilizes cavitation bubble generation and collapse as a form of mechanical vibration/冲击 to remove material more efficiently, allowing deeper grooves to be formed without increasing the number of processing steps
2Adaptability or versatility
If molding is used for micro and nanomachining, then arbitrary shapes can be created, but new molds are required for each shape resulting in low productivity and high cost
Solution Approach 1:
The patent replaces the mechanical molding system with a laser-based direct writing system that uses light to directly process the material, eliminating the need for physical molds and enabling rapid shape changes without tooling changes
Solution Approach 2:
The patent uses digital design data to directly guide the laser processing path, creating a digital copy approach where the desired shape is defined by software rather than physical molds, enabling rapid prototyping and shape customization
3Manufacturing precision
If photolithography is used for fine processing, then high precision is achieved, but multiple steps including light irradiation, etching, and sputtering are required
Solution Approach 1:
The patent merges multiple separate process steps (material removal, shape formation, and surface preparation) into a single laser processing step by utilizing cavitation bubble dynamics, thereby reducing the total number of steps while maintaining precision
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 method enables high-efficiency processing of transparent materials with improved groove depth capabilities and reduced processing time, eliminating the need for complex molds and expensive clean room equipment, facilitating rapid prototyping and efficient metal wiring formation.
Implementation Method 1
irradiating the uncured transparent material disposed in the disposing step with a laser beam so that cavitation bubbles are generated in the uncured transparent material
Implementation Method 2
irradiating the uncured transparent material disposed in the disposing step with a laser beam so that cavitation bubbles are generated in the uncured transparent material
Data Source
AI summary
A fabrication method of transparent material is a method of processing a thermosetting transparent material including a disposing step of disposing an uncured thermosetting transparent material, a laser beam irradiation step of irradiating the disposed uncured thermosetting transparent material with a laser beam so that cavitation bubbles are generated in the uncured thermosetting transparent material, and a curing step of performing a curing process on the uncured thermosetting transparent material in which the cavitation bubbles are generated.