Piezoelectric Measurement for Liquid Samples Using Flexible Membrane
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods are inadequate for measuring the piezoelectric properties of liquid or viscous materials, as they fail to maintain the sample's shape when a load is applied, making it difficult to measure the generated electrical signals effectively.
Innovation Solution
A piezoelectric property measuring apparatus is designed with a fixing jig and an operating jig that form a closed space, allowing a sample to be inserted and a load applied, while using electrodes and a driving module to measure the charge amount and motion information, enabling the calculation of piezoelectric properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a load is applied to a liquid or viscous material sample, then the piezoelectric effect can be generated, but the sample cannot maintain its shape making measurement difficult
Solution Approach 1:
The patent uses a flexible membrane to contain the liquid or viscous material sample. The membrane maintains the sample's shape during load application while allowing the piezoelectric effect to occur. This resolves the contradiction by providing external structural support without preventing the measurement of the piezoelectric response.
Solution Approach 2:
The patent introduces a membrane as an intermediary between the loading mechanism and the liquid sample. The membrane transfers the applied load to the sample while maintaining its containment and shape, enabling accurate measurement of the piezoelectric effect despite the sample's inability to maintain shape on its own.
2Measurement precision
If a closed space is formed to contain the liquid sample, then the sample can be loaded, but the device complexity increases
Solution Approach 1:
The membrane serves multiple functions simultaneously: it contains the liquid sample, maintains its shape during loading, and acts as a piezoelectric element itself. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while enabling accurate measurement.
Solution Approach 2:
The patent combines the containment structure and the piezoelectric measurement element into a single integrated membrane system. This merging of functions simplifies the overall apparatus structure compared to using separate containment and measurement 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 apparatus effectively measures the piezoelectric properties of liquid or viscous materials by applying a load and measuring the generated charge, allowing for the determination of piezoelectric coefficients through the analysis of charge amplitude versus load applied, as illustrated in the provided graph.
Implementation Method 1
When a pressure is applied to a material, internal polarization is changed due to deformation (mechanical energy), and electrical charges (electrical energy) are generated. This is known as a piezoelectric phenomenon.
Data Source
AI summary
Provided is a piezoelectric property measuring apparatus for a liquid or viscous material. The piezoelectric property measuring apparatus includes a fixing jig having an inner space and an opened space; an operating jig configured to close the opened region of the inner space; a first electrode and a second electrode; a driving module moving the operating jig according to a driving signal; a motion information measuring module measuring motion information of the operating jig; a charge amount measuring module measuring the charge amount through the first electrode and the second electrode; and a control module generating the driving signal for the driving module, supplying the driving signal to the driving module, receiving the motion information, receiving charge amount information of the closed space, and measuring a piezoelectric property of the sample by using the motion information and the charge amount information.