Electron-Beam Multidimensional Printing for Submicron Gel Structures
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Solution Overview
Problem
Conventional additive manufacturing from liquid gels is limited by micron-level spatial resolution due to photoinduced crosslinking and requires dry samples, lacking the capability for three-dimensional printing in a continuous process.
Innovation Solution
A multidimensional printer using energetic crosslinking particles such as electrons or X-rays transmitted through a membrane to crosslink polymers in a liquid composition, enabling the formation of two- and three-dimensional solid crosslinked polymer structures with submicron spatial resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If photoinduced crosslinking is used for additive manufacturing from liquid gels, then the process can be performed with conventional methods, but the spatial resolution is limited to micron-level
Solution Approach 1:
The patent changes the fundamental parameter of the crosslinking mechanism from photoinduced (optical) to electron beam induced. This parameter change enables submicron spatial resolution by utilizing the shorter wavelength and higher energy of electrons compared to photons, directly resolving the spatial resolution limitation while maintaining the liquid gel processing capability
Solution Approach 2:
The patent substitutes the optical field-based photoinduced crosslinking mechanism with an electron beam-based mechanism. This substitution replaces the conventional optical system with an electron beam system, enabling higher precision manufacturing while requiring vacuum environment and specialized electron optics
2Productivity
If conventional additive manufacturing methods are used, then the process can be performed with existing technology, but three-dimensional printing in a continuous process is not achieved
Solution Approach 1:
The patent implements continuous three-dimensional printing by maintaining the liquid gel state throughout the printing process and using electron beam scanning to continuously crosslink the material layer by layer. The liquid composition remains in the print chamber, allowing uninterrupted sequential deposition and crosslinking, achieving continuous manufacturing while maintaining submicron precision through controlled electron beam parameters
Solution Approach 2:
The patent employs dynamic control of the electron beam scanning system and liquid gel dispensing to achieve continuous printing. The system dynamically adjusts beam position, intensity, and exposure timing while the liquid material is continuously supplied, enabling real-time three-dimensional construction with precise dimensional control
3Adaptability or versatility
If dry samples are used in conventional methods, then the sample preparation is simpler, but the capability for processing diverse materials including liquid compositions is reduced
Solution Approach 1:
The patent changes the sample state parameter from dry to liquid by utilizing electron beam crosslinking in the liquid phase. This parameter change enables processing of diverse materials including liquid compositions, gels, and suspensions while maintaining manufacturing feasibility through vacuum-compatible liquid handling and in-situ crosslinking
Solution Approach 2:
The patent introduces a vacuum-compatible liquid handling system as an intermediary between the liquid composition and electron beam source. This intermediary system enables the liquid sample to be introduced, positioned, and processed in the vacuum environment without direct contact between the liquid and vacuum pump, simplifying sample preparation while enabling versatile material processing
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
Overcomes the limitations of conventional methods by achieving higher spatial resolution and allowing for the direct printing of gel structures from a liquid state, enabling the encapsulation of objects and diverse material processing with unprecedented thickness and dimensional control.
Implementation Method 1
crosslinking portions of the polymers proximate to the cross-linkable moieties subjected to the energetic crosslinking particles
Implementation Method 2
energetic crosslinking particles such as electrons or X-rays
Implementation Method 3
energetic crosslinking particles such as electrons or X-rays
Data Source
AI summary
A multidimensional printer makes a multidimensional structure from a liquid composition and includes: an energetic crosslinking particle source; a vacuum chamber that receives energetic crosslinking particles from the energetic crosslinking particle source; a membrane that transmits the energetic crosslinking particles; and a sample chamber that: receives a liquid composition that includes a solvent and polymers, the polymers including a cross-linkable moiety subjected to the energetic crosslinking particles such that portions of the polymers proximate to the cross-linkable moieties subjected to the energetic crosslinking particles crosslink to form a solid crosslinked polymer structure, wherein the membrane isolates a vacuum of the vacuum chamber from vapor of the liquid composition in the sample chamber.