High-density micro-chamber array with transparent electrodes
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Solution Overview
Problem
Conventional high-density micro-chamber arrays face challenges in controlling membrane potential and detecting biomolecular reactions due to limited sensitivity and efficiency in forming lipid bilayer membranes with small chamber capacities and low reaction frequencies.
Innovation Solution
A high-density micro-chamber array with a translucent substrate and a hydrophobic layer, featuring micro-chambers with capacities of 4,000 × 10^-18 m^3 or smaller, where electrodes are integrated as transparent electrodes on the bottom surface, allowing light transmission and enabling the formation of lipid bilayer membranes to seal test liquids, and applying voltage between electrodes to control membrane potential and detect membrane protein properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If micro-chamber capacity is reduced to increase reaction sensitivity, then detection sensitivity is improved, but reaction occurrence rate decreases
Solution Approach 1:
The system segments the measurement process by creating a high-density array of multiple micro-chambers (e.g., 100 or more chambers per slide). Each chamber has small capacity (4,000 × 10^-18 m³ or smaller) for high sensitivity, while the large number of segmented chambers collectively increases reaction occurrence rate by providing multiple independent reaction sites.
2Measurement precision
If micro-chamber capacity is reduced to increase concentration changes, then detection sensitivity is improved, but reaction frequency decreases
Solution Approach 1:
The reaction system is segmented into multiple parallel micro-chambers. Each chamber's small volume (4,000 × 10^-18 m³ or smaller) produces large concentration changes for sensitive detection, while the ensemble of many chambers ensures that statistically significant numbers of reactions occur across the array.
Solution Approach 2:
The system creates multiple copies of the micro-chamber reaction unit arranged in high density. By copying the reaction environment across many identical chambers, the system maintains the sensitivity benefits of small volume while achieving adequate reaction frequency through parallel copies.
3Illumination intensity
If transparent electrodes are integrated on substrate bottom surface, then light transmission is improved, but manufacturing complexity increases
Solution Approach 1:
The substrate bottom surface is given multiple functions: it serves as both the structural base of the device and as an electrode surface for applying voltage to control membrane potential. The transparent electrode layer integrated into the substrate enables both optical transmission for detection and electrical control of the lipid bilayer membranes.
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 configuration enhances the sensitivity and efficiency of biomolecular reaction detection by increasing concentration changes and reaction occurrence rates, allowing for detailed analysis of membrane protein properties and biopolymer accumulation within the micro-chambers.
Implementation Method 1
a hydrophobic layer provided on the substrate and composed of a hydrophobic substance
Implementation Method 2
a translucent flat substrate... allowing light transmission
Implementation Method 3
applying voltage between electrodes to control membrane potential
Data Source
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AI summary
A high-density micro-chamber array has a translucent flat substrate, a hydrophobic layer in which a plurality of micro-chambers are provided, and a lipid bilayer membrane formed in each of the openings of the plurality of micro-chambers, wherein an electrode is provided in each of the micro-chambers, and when the side of the substrate on which the hydrophobic layer is provided is directed upward, the micro-chamber array is configured such that with at least one of the following A) and B) being met, light entering the substrate from below the substrate is transmitted through the substrate and penetrates into the interiors of the micro-chambers, and light entering the substrate from the interiors of the micro-chambers is transmitted through the substrate and escapes toward below the substrate. A) The electrode is provided on an inner side surface of each of the micro-chambers. B) The electrode is provided as a transparent electrode on a bottom surface of each of the micro-chambers.