Vapor-Deposited SAM 3D Printing for Faster Ordered Structures
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Solution Overview
Problem
Existing 3D printing technologies are limited by high costs and slow processing speeds, particularly in creating complex metallic structures, due to time-consuming melting and solidification processes.
Innovation Solution
A method and system utilizing self-assembled monolayers (SAMs) with functional groups at both ends, cross-linked by UV radiation or heat, to form multiple layers of SAMs on a substrate, allowing for the creation of stable 3D structures through layer-by-layer deposition using either solution-based or vapor-based techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional melting and solidification processes are used for 3D printing, then structural integrity is achieved, but fabrication time increases significantly
Solution Approach 1:
The patent changes the fundamental parameter of material deposition from molten state to vapor state. By using vapor-based deposition, the material transitions directly from vapor to solid without requiring melting and subsequent solidification, thereby eliminating the time-consuming thermal cycles while maintaining structural integrity through controlled vapor deposition and cross-linking processes
Solution Approach 2:
The patent replaces the mechanical/thermal system of melting and solidification with a chemical/vapor deposition system. Instead of using heat to melt materials and then cooling to solidify, the invention uses vapor-phase molecular deposition followed by cross-linking, substituting thermal-mechanical processes with vapor-phase chemical processes that are faster and more efficient
2Strength
If conventional 3D printing materials and processes are used, then material strength is achieved, but fabrication cost increases
Solution Approach 1:
The patent changes the material state parameter from liquid/molten to vapor phase, enabling direct vapor deposition. This parameter change allows for more efficient material utilization and reduced waste, lowering fabrication costs while maintaining material strength through controlled vapor-phase deposition and cross-linking that preserves molecular integrity
Solution Approach 2:
The patent employs self-assembled monolayers (SAMs) that automatically organize and bond to form strong structures without requiring additional binding agents or complex post-processing. The vapor-deposited molecules self-organize into ordered structures with inherent strength, eliminating the need for extra materials or energy-intensive consolidation steps
3Manufacturing precision
If layer-by-layer deposition is used to create complex structures, then structural precision is improved, but processing time increases
Solution Approach 1:
The patent implements continuous vapor deposition where material is deposited layer-by-layer without interruption. The vapor phase allows for continuous deposition without the need to stop for melting, cooling, or solidification cycles, maintaining continuous useful action that achieves high precision while minimizing processing time
Solution Approach 2:
The patent uses pre-functionalized vapor molecules that are ready to bond immediately upon deposition. The molecular precursors are prepared in advance with reactive groups that self-assemble and cross-link upon contact with the substrate, eliminating the need for post-deposition processing and achieving precision quickly
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 low-cost and precise fabrication of highly ordered 3D structures with controlled shape and size, reducing fabrication time and costs while maintaining structural integrity.
Implementation Method 1
providing a first solution of a self-assembled monolayer (SAM) molecule; applying the first solution to the flat surface of the substrate to form a first SAM
Implementation Method 2
applying a first force to cross-link the first SAM; the first force in step vi) is UV light
Implementation Method 3
applying a second force to anneal the multiple layer of the SAM to form a soft material, or alternatively applying a third force to anneal the multiple layer of the SAM to form a hard material; the second force and the third force in step viii) are heat
Implementation Method 4
producing a first vapor of a self-assembled monolayer (SAM) molecule; applying the first vapor on the flat surface of the substrate
Data Source
AI summary
A vapor-based method and system for printing a 3D structure are provided. The vapor-based method includes providing a substrate; providing a first vapor including an organic molecule including a functional group at each end for creation of self-assembled monolayers (SAMs) as a building block for printing the 3D structure; providing a second vapor including metal ions; applying the first vapor and the second vapor to form molecular-metal SAMs thereby providing a multiple layered SAMs material on the substrate; and applying a force and forming the 3D structure from the multiple layered SAMs material, wherein the 3D structure is provided on the substrate.