3D Block Copolymer Bilayer Membranes With Electric-Field Shape Control
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Solution Overview
Problem
Existing methods for manufacturing three-dimensional artificial biological membranes face challenges in achieving desired sizes and shapes, particularly narrow and long structures like cilia, and struggle with stability over time.
Innovation Solution
A method involving the use of block copolymers, where a block copolymer solution is injected into micro-wells, hydrated with a buffer while an electric field is applied, and stabilized with a hydrogel, allowing control over size and shape through concentration and electric field parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a lipid material is used to manufacture a three-dimensional artificial biological membrane structure, then the manufacturing process is relatively simple, but it is difficult to manufacture structures with various desired sizes and shapes
Solution Approach 1:
The patent applies parameter changes by systematically varying the concentration of block copolymer solutions (e.g., 1 wt%, 2 wt%, 3 wt%) to control the size and shape of the formed 3D structures. Different concentrations produce different micelle densities and growth patterns, enabling precise control over structure morphology while maintaining a relatively simple one-step self-assembly process.
Solution Approach 2:
The patent employs periodic action through the application of alternating electric fields during the self-assembly process. By controlling the frequency and amplitude of the electric field, the patent directs the periodic formation and growth of block copolymer structures, enabling the creation of specific shapes such as spheres, cylinders, and complex 3D architectures with controlled dimensions.
2Ease of manufacture
If a lipid material is used to manufacture a three-dimensional artificial biological membrane structure, then the manufacturing process is relatively simple, but the manufactured structure cannot be stably maintained for a long time
Solution Approach 1:
The patent uses composite materials by combining block copolymers with hydrogels to form hybrid 3D structures. The block copolymer provides the membrane framework while the hydrogel matrix offers mechanical support and stability. This composite approach maintains the simplicity of the self-assembly process while dramatically improving the long-term structural stability and reliability of the manufactured 3D artificial membrane structures.
3Manufacturing precision
If block copolymer concentration and electric field parameters are controlled, then various sizes and shapes of 3D structures can be manufactured, but the process complexity increases
Solution Approach 1:
The patent applies self-service through the self-assembly mechanism of block copolymers in aqueous solutions. The amphiphilic nature of block copolymers causes them to automatically organize into micelles and 3D structures without requiring complex external guidance. By simply controlling basic parameters like concentration and electric field, the system self-organizes into desired structures, reducing process control complexity while maintaining high manufacturing 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 approach enables the fabrication of three-dimensional block copolymer artificial cell membranes (3DBCPM) with high stability and precise control over size and shape, suitable for applications in artificial cells and biosensors.
Implementation Method 1
injecting a block copolymer (BCP) solution into each micro-well of a micro-well array formed on a substrate, and drying to form a block copolymer layer
Implementation Method 2
forming a three-dimensional structure on top of the micro-well from the block copolymer layer by applying a buffer (hydration buffer) to each micro-well in which the block copolymer layer is formed to hydrate
Implementation Method 3
at least a part of the process of hydration by applying a buffer to each micro-well in which the block copolymer layer is formed may be performed while an electric field is applied between the upper and lower portions of the micro-well
Data Source
AI summary
The present invention relates to a method for manufacturing a three-dimensional structure based on a block copolymer. The method comprises the steps of injecting a block copolymer (BCP) solution into each micro-well formed on the substrate and drying it to form a block copolymer layer, and applying a buffer to the block copolymer layer to hydrate the micro-well in three dimensions Forming the structure, after the three-dimensional structure is formed, injecting and curing a hydrogel solution around the three-dimensional structure may include the step of enhancing stability. In particular, the process of hydration by applying a buffer to the micro-well is performed while an electric field is applied. By controlling the concentration of the block copolymer (BCP) and the amplitude and frequency of the electric field, a three-dimensional artificial cell membrane having a desired size and shape, such as a spherical or ciliary shape and high stability (100% survival for 50 days) is manufactured can do. The present invention can be efficiently applied to various biological fields such as artificial cells, cell-mimicking biosensors, and bioreactors.