Micro-Bioelectrochemical Cell Arrays for Live-Microbe Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current devices and methods lack the ability to visualize microbial interactions with charged surfaces at the microscopic level and have insufficient throughput for high-throughput studies of microbial responses to different genetic mutant strains or physical/chemical/electrical conditions, failing to provide confocal and super-resolution imaging of live microbes.
Innovation Solution
A micro-bioelectrochemical cell (μ-BEC) device with multiple chambers, each containing a working electrode, counter electrode, and reference electrode, compatible with confocal and super-resolution imaging, allowing for high-throughput studies of microbial interactions with charged surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If bulk reactor studies are used to monitor microbial interactions, then overall electrochemical output can be measured, but the ability to visualize processes at the microscopic level is lost
Solution Approach 1:
The device divides the bulk reactor into multiple individual chambers, each capable of containing and visualizing single microbes or small groups. This segmentation allows microscopic observation while maintaining electrochemical measurement capabilities, resolving the contradiction between bulk measurement and microscopic visualization.
Solution Approach 2:
The patent integrates multiple functional components (chambers, electrodes, imaging systems) into a nested hierarchical structure where individual chambers are contained within a larger device framework. This nesting enables simultaneous microscopic visualization and electrochemical monitoring at different scales.
2Productivity
If conventional devices are used for microbial studies, then simple structure is maintained, but high throughput capacity for comparing different strains or conditions is insufficient
Solution Approach 1:
The device incorporates an array of multiple identical chambers (e.g., 96-well format), allowing parallel experimentation with different genetic mutant strains or physical/chemical conditions. This segmentation into replicable units enables high-throughput capacity while maintaining a modular, manageable structure.
Solution Approach 2:
Each chamber is designed with universal characteristics (identical electrode configurations, standardized dimensions) that allow the same device structure to be used for multiple different experimental conditions and microbial strains, enhancing productivity without increasing structural complexity.
3Measurement precision
If existing methods are used, then basic electrochemical measurements are possible, but confocal and super-resolution imaging of live microbes is not achieved
Solution Approach 1:
The device merges electrochemical measurement capabilities with confocal and super-resolution imaging systems into an integrated platform. This combination allows simultaneous or sequential acquisition of both electrochemical data and high-resolution images of live microbes within the same chamber, achieving dual functionality without requiring separate operational systems.
Solution Approach 2:
The chamber structure serves as an intermediary that is transparent and compatible with both electrochemical sensing and optical imaging. The chamber design allows light transmission for confocal imaging while maintaining electrical contact for electrochemical measurements, facilitating seamless integration of both measurement modalities.
4Productivity
If multiple chambers are incorporated to enable high throughput, then productivity increases, but device complexity increases
Solution Approach 1:
The device is segmented into a modular array of identical chambers arranged in a systematic pattern (such as a 96-well plate configuration). This standardized segmentation allows for easy fabrication, assembly, and operation, preventing complexity from escalating despite the increased number of chambers.
Solution Approach 2:
The device maintains consistent geometric and electrochemical parameters across all chambers (volume, electrode spacing, material composition), allowing scalability from a small number to many chambers without proportionally increasing operational or analytical complexity. The uniformity enables automated handling and data 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
Enables high-throughput, microscopic analysis of microbial interactions with charged surfaces, facilitating confocal and super-resolution imaging of live microbes and providing electrochemical measurements, overcoming limitations of bulk reactor studies.
Implementation Method 1
Each chamber includes one well sealed between one portion of the working electrode layer and one portion of the electrical layer containing one counter electrode and one reference electrode. The one portion of the working electrode layer, the one counter electrode, and the one reference electrode are in electrical contact with the volume of the chamber.
Implementation Method 2
One influential property of any surface is its intrinsic charge, and electrostatic forces represent the earliest interactions of microbes with surfaces.
Data Source
AI summary
A micro-bioelectrochemical cell (μ-BEC) device is disclosed that includes from 4 to 96 microfluidically connected chambers, in which each chamber encloses a volume of about 1 μL to 2 μL. A working electrode, reference electrode, and counting electrode contacts each volume. The μ-BEC device includes a support layer coated with a working electrode layer, a microfluidics layer containing a plurality of wells, and an electrical layer containing the reference and counter electrodes. Methods of using the μ-BEC device to perform bioelectrochemical measurements of cells are also disclosed.