Micro-bubble Plate Patterning via Hydrophobic Cavities
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Solution Overview
Problem
Conventional methods for patterning biological and non-biological materials on specific sites on a plate are not highly selective, require expensive and difficult-to-produce stencils, and face challenges with cell growth and media attachment, leading to poor pattern resolution and high manufacturing costs.
Innovation Solution
A micro-bubble plate with hydrophobic cavities that trap gas bubbles, preventing unwanted material attachment and allowing for precise patterning of biological and non-biological materials at specific sites, using gas bubbles as impenetrable barriers and temporary scaffolding for tissue growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If physical stenciling techniques are used to pattern media, then media can be placed at specific locations, but the stencils are expensive, difficult to produce with high resolution, and must remain in intimate contact with the surface during incubation
Solution Approach 1:
The patent extracts the barrier function from solid stencils and implements it through gas bubbles trapped in hydrophobic cavities. The bubbles are formed in situ within the plate structure, eliminating the need for separate stencil components. This resolves the contradiction by achieving high-resolution patterning through the plate's inherent structure rather than through difficult-to-manufacture stencils
Solution Approach 2:
The patent introduces gas bubbles as an intermediary substance between the hydrophobic cavities and the media. These bubbles act as temporary barriers that prevent media attachment in specific regions during incubation, then can be easily removed. This mediator approach achieves high-resolution patterning without requiring permanent or difficult-to-remove stencils
2Manufacturing precision
If structured micrawells are used to contain media, then media can be localized, but cells will grow out of the cavities and media may coat all sides, requiring high aspect ratio wells that increase manufacturing difficulty and cost
Solution Approach 1:
The patent uses gas bubbles (pneumatic element) trapped in hydrophobic cavities to contain and localize media laterally. The gas pressure and surface tension effects create effective barriers without requiring deep physical walls. This resolves the contradiction by achieving precise media localization through pneumatic principles rather than complex high-aspect-ratio structures
Solution Approach 2:
The patent shifts from containing media through vertical depth (3D high-aspect-ratio wells) to containing media through lateral gas bubble barriers at the surface interface. This dimensional shift from depth-based containment to surface-based gas barrier achieves equivalent localization with much simpler shallow cavity structures
3Adaptability or versatility
If patterned surface treatments are used to create favorable regions for media attachment, then specific chemistry can be created at predetermined locations, but the methods are not highly selective and each media/plate requires different surface treatment
Solution Approach 1:
The patent performs preliminary action by creating hydrophobic cavities in the plate structure before media application. These pre-formed structural features will automatically trap gas bubbles when liquid is introduced, creating the patterning effect without requiring subsequent selective treatments. This resolves the contradiction by establishing the patterning framework in advance through universal hydrophobic cavity structures rather than through media-specific surface chemistry modifications
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 high-resolution, cost-effective patterning and three-dimensional structure formation without damaging biological functions, allowing for statistically significant data sets and efficient use of materials, with gas bubbles providing a cheap and convenient method for creating temporary scaffolding.
Implementation Method 1
The plate has great utility for plating cells and tissues at specific sites... using hydrophobic or liquid repellant cavities... The trapped gas cavities or troughs are used to facilitate patterning of biological media and non-biological media
Implementation Method 2
Gas bubbles preferably provide contiguous, impenetrable barriers to cell and media attachment on the surfaces of the cavities... Gas bubbles can also be used to provide temporary scaffolding for tissue growth or growth or formation of non-tissue structures
Data Source
AI summary
Systems and methods are provided for patterning biological and non-biological material at specific sites on a plate, as well as growing three dimensional structures. Preferred embodiments comprise a plate with regions that will trap gas, usually in the form of bubbles, when the plate is submerged in liquid. Other embodiment of the present invention include a method for placing materials on the plate at pre-determined locations through the use of trapped gas to prevent materials from collecting at unwanted regions. The plate has great utility for plating cells and tissues at specific sites, such as on an array. The disclosed method can also be used to coat the surface of a plate with coatings at specific locations for patterned coating applications and to build up materials to produce three dimensional structures, including micro-mechanical structures—where the structures may be formed from living or non-living material, tissue or non-tissue, organic or inorganic, and the like.