Capacitive Bubble Detection on Glass Slides
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Solution Overview
Problem
The presence of bubbles in aqueous solutions during life science experiments on glass slides can disrupt results by causing false binding events and altering flow rates, making it essential to detect bubbles automatically to ensure accurate data interpretation.
Innovation Solution
A system and method using a glass slide with a plurality of electrodes configured for capacitance measurement, where a control unit captures capacitance values to detect bubbles and display their locations graphically, allowing for automatic invalidation of affected data and efficient pH modulation using the same electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual microscopy is used to detect bubbles, then detection accuracy can be achieved, but time consumption increases and the field of view is limited
Solution Approach 1:
The patent replaces the mechanical/optical system of manual microscopy with an electrical field-based capacitance measurement system. Electrodes are integrated into the slide substrate to create measurement zones that automatically detect bubbles through capacitance changes, eliminating the need for manual visual inspection under a microscope.
Solution Approach 2:
The slide itself performs bubble detection through integrated electrodes and control circuitry. The system automatically measures capacitance values across multiple zones, processes the data to identify bubbles, and generates results without requiring external manual intervention or separate detection equipment.
2Object-affected harmful factors
If light illumination is used under the microscope, then bubble detection is possible, but the light can have a destructive effect on the substance-of-interest
Solution Approach 1:
The patent replaces optical illumination with electrical field-based capacitance sensing. The measurement system uses electrodes to create electric fields that interact with bubbles (which have different dielectric properties than the surrounding medium), allowing detection without any light exposure that could damage photosensitive substances.
3Adaptability or versatility
If multiple separate systems are used for bubble detection and conventional testing, then each function can be optimized, but device complexity increases
Solution Approach 1:
The patent integrates multiple functions into a single system. The same electrodes that serve as test elements for conventional experiments also function as sensors for bubble detection. The control unit processes both types of data, allowing the slide to perform both conventional testing and bubble monitoring without requiring separate dedicated components.
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 solution enables quick and accurate detection of bubbles without manual intervention, ensuring reliable experimental results and efficient use of electrodes for both bubble detection and pH adjustment, reducing user burden and improving data integrity.
Implementation Method 1
a measurement area, 10, containing a plurality of electrodes configured for capacitance measurement
Data Source
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AI summary
A system and a method for detecting bubbles in an aqueous solution involve placing the solution onto a measurement area of a glass slide used for performing a life science experiment, the measurement area containing a plurality of electrodes. The slide includes a control unit that measures capacitance values associated with individual ones of the electrodes and/or pairs of the electrodes. A data processing unit receives and analyzes the measured capacitances to identify a presence and a location of a bubble in the solution. The system and the slide can optionally be used to adjust the pH level of the solution using at least some of the electrodes.