Electrochemical Detection with Liquid-Retaining Interface Stabilization

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Solution Overview

Problem

Evaporation of solutions during catalytic reactions leads to volume reduction, making detection impossible, and disturbances in the liquid-liquid interface cause detection inaccuracies or errors.

Innovation Solution

An electrochemical detection technique using a liquid bath with a working electrode and a counter electrode, where a first lump of liquid undergoes a catalytic reaction covered by a second lump of liquid, stabilized by a liquid-retaining structure that allows permeation and retention, maintaining the interface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the volume of the solution is extremely small, then detection sensitivity is improved, but evaporation leads to a decrease in the volume of the solution, making detection impossible

Engineering Contradiction:

Improvedetection sensitivityVSAvoiddetection feasibility

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

A hydrophobic film is formed on the surface of the aqueous solution containing the catalytic reaction. This flexible film acts as a barrier that prevents evaporation of the aqueous solution while allowing the reaction to proceed. The film maintains the solution volume stable, ensuring detection remains feasible even when solution volume is extremely small for high sensitivity detection.

Inventive Principle:

Principle #30Flexible shells and thin films

2Reliability

If a liquid is used to cover the solution to prevent evaporation, then evaporation is prevented, but vibration or shock may cause the liquid-liquid interface to be disturbed or the solution shape to change considerably, affecting detection accuracy

Engineering Contradiction:

Improveevaporation preventionVSAvoiddetection accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The hydrophobic film used to cover the solution has flexible properties that allow it to accommodate vibrations and shocks without disturbing the liquid-liquid interface. The film's flexibility enables it to maintain its covering function during mechanical disturbances, preventing solution spillage or contamination while preserving detection accuracy.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The hydrophobic film acts as a cushioning layer between the aqueous solution and external mechanical disturbances. When vibration or shock occurs, the film absorbs and dissipates these disturbances before they can reach and disturb the solution interface, thereby maintaining stable detection conditions.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If a well is used to contain the solution, then evaporation is prevented, but vibration or shock may cause part of the solution to spill out of the well or the liquid to flow into the well, affecting detection

Engineering Contradiction:

Improveevaporation preventionVSAvoiddetection accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

Instead of using a rigid well structure, the patent employs a flexible hydrophobic film to cover and contain the solution. This flexible containment method prevents evaporation while being more resistant to mechanical disturbances. The film adapts to vibrations and shocks without causing solution spillage or unwanted flow, thereby maintaining detection accuracy.

Inventive Principle:

Principle #30Flexible shells and thin films

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

Stable and sensitive detection of catalytic reaction products is achieved, with improved detection accuracy and sensitivity due to the retention of the liquid interface despite vibrations or shocks.

Implementation Method 1

The liquid-retaining structure allows the first lump of liquid to permeate and can retain the first lump of liquid

Methodology Applied

Scientific EffectPermeation: Permeation

Implementation Method 2

electrochemical detection technique to detect a product generated by progress of a catalytic reaction in a solution and dissolved in the solution

Methodology Applied

Scientific EffectElectrochemical detection:

Implementation Method 3

The catalytic reaction product is insoluble in the second lump of liquid

Methodology Applied

Scientific EffectInsolubility:

Data Source

PatentUS12535462B2Electrochemical detection method for catalytic reaction product, electrochemical detection apparatus and transducer

Publication Date: 2026.01.27 JAPAN AVIATION ELECTRONICS IND LTD

AI summary

A method of electrochemically detecting a catalytic reaction product by confining the catalytic reaction product within a first lump of liquid and by using a working electrode disposed in the first lump of liquid and a counter electrode disposed in a second lump of liquid, the catalytic reaction product being generated by progress of a catalytic reaction in the first lump of liquid, and the second lump of liquid being in contact with the first lump of liquid to form a liquid-liquid interface, the method including placing a retaining structure in the liquid bath, the retaining structure allowing the first lump of liquid to permeate and being able to retain the first lump of liquid; and allowing the catalytic reaction to progress and detecting the catalytic reaction product with the first lump of liquid retained to the retaining structure.