Glassy Carbon Roll Mold for Micro-Nano Pattern Formation
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Solution Overview
Problem
Current methods for manufacturing glass or metal micro/nano-patterns are limited by high production costs, difficulty in forming small shapes, and instability in high-temperature, high-pressure environments, making it challenging to achieve efficient and cost-effective mass production of high-quality molds with precise fine pattern formation on large areas.
Innovation Solution
A glassy carbon roll-type mold manufacturing method involving a roll precursor with a thermosetting resin, which is carbonized to form a durable, high-quality mold that can efficiently create micro-nano structures on substrates without deformation or damage, using a two-step hardening process to manage thermal contraction and prevent cracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a molding press process is used to form glass or metal micro/nano-patterns, then mass production is enabled, but the mold requires high-temperature and high-pressure resistance which limits material selection and increases manufacturing difficulty
Solution Approach 1:
The patent uses glassy carbon as a composite material that combines the high-temperature and high-pressure resistance required for glass molding press processes with ease of machining. Glassy carbon provides both the mechanical strength needed for molding press operations and the machinability that allows for cost-effective manufacturing of micro/nano-patterns, resolving the contradiction between material performance requirements and manufacturing ease.
Solution Approach 2:
The patent changes the material parameter from traditional mold materials (tungsten carbide, aluminum nitride, titanium nitride, aluminum oxide, or stainless steel) to glassy carbon, which has different physical and chemical properties. This parameter change enables both high-temperature resistance and improved machinability, allowing for the formation of fine patterns with minimal radius processing tips while maintaining the structural stability required for molding press processes.
2Stability of the object's composition
If traditional machining processes are used to form micro/nano-patterns on difficult-to-machine materials, then shape stability is maintained, but it is difficult to form shapes equal to or smaller than the minimal radius of a processing tip
Solution Approach 1:
The patent changes the material parameter to glassy carbon, which has unique properties that enable both shape stability and fine pattern formation. Glassy carbon's isotropic structure and uniform physical properties allow processing tips with minimal radius to create precise micro/nano-patterns while maintaining shape stability during high-temperature, high-pressure molding operations, overcoming the limitation of traditional difficult-to-machine materials.
3Stability of the object's composition
If machining processes are used to form micro/nano-patterns, then shape stability is maintained, but machining costs increase exponentially as the amount of machining increases
Solution Approach 1:
The patent changes the material parameter to glassy carbon, which significantly reduces machining costs while maintaining shape stability. Glassy carbon's machinability allows for cost-effective formation of micro/nano-patterns compared to traditional difficult-to-machine materials, eliminating the exponential cost increase associated with extensive machining operations while preserving the shape stability required for molding press processes.
4Reliability
If a vertically moving mold is used for fine pattern formation, then the molding press process can be implemented, but there is a limit to improving the efficiency of fine pattern formation and manufacturing large products
Solution Approach 1:
The patent applies the dynamics principle by transitioning from a static vertically moving mold to a rotating roll-type mold. The roll-type mold rotates in contact with the substrate, enabling continuous fine pattern formation across large areas. This dynamic approach maintains the reliability of the molding press process while dramatically improving productivity by allowing efficient manufacturing of large products that exceed the size limits of traditional vertically moving molds.
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 method enables the precise and efficient formation of fine patterns on large areas of glass or metal substrates with improved surface quality and stability in high-temperature, high-pressure environments, reducing production costs and increasing productivity.
Implementation Method 1
carbonizing the thermosetting resin
Implementation Method 2
a two-step hardening process to manage thermal contraction and prevent cracking
Data Source
AI summary
Provided is a glassy carbon roll-type mold manufacturing method for fine pattern formation. The method is for manufacturing a glassy carbon roll-type mold configured to form a fine pattern having a micro-nano structure on a substrate including glass or a metal. The method includes: preparing a roll precursor including a thermosetting resin material, the roll precursor having a roll shape with a circumferential surface on which a pattern corresponding to the fine pattern is formed, the roll precursor being configured to press the substrate while rotating on the substrate; and carbonizing the roll precursor.