Plant Stem OECT Sensor for Real-Time Biochemical Analysis
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Solution Overview
Problem
Existing phyto-analysis sensors are bio-incompatible with plants, leading to rejection and isolation, cannot perform real-time biochemical characterization, and are complex and costly.
Innovation Solution
A phyto-analysis sensor with a biocompatible rigid support made of hygroscopic and biocompatible materials, incorporating an organic electrochemical transistor (OECT) to measure electrochemical parameters in plant fluids, allowing real-time biochemical characterization with minimal invasiveness and reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If metal electrodes are inserted into the plant to perform electrochemical analysis, then electrochemical parameters can be measured, but the plant rejects the electrodes due to bio-incompatibility and forms insulating cavities around them
Solution Approach 1:
The patent changes the material parameter of the electrode from metal to biocompatible polymer, fundamentally altering the interaction with plant tissues. This material substitution eliminates bio-incompatibility while maintaining electrochemical sensing capability, allowing long-term stable measurement without rejection or isolation.
Solution Approach 2:
The patent employs composite material structures combining biocompatible polymers with electrochemically active components. This composite approach integrates the biocompatibility of polymer materials with the electrochemical functionality needed for measurement, resolving the contradiction between measurement capability and biological acceptance.
2Measurement precision
If traditional electrochemical sensors are used to monitor plant fluids, then electrical characteristics can be detected, but biochemical characterization is not possible
Solution Approach 1:
The patent designs a multi-functional sensor system that can both detect electrical characteristics and perform biochemical analysis. The sensor incorporates specific recognition elements (such as antibodies or enzymes) that enable it to identify and measure specific biochemical compounds in plant fluids, while maintaining its electrochemical sensing capabilities for general electrical parameter monitoring.
Solution Approach 2:
The patent introduces intermediary substances (such as molecularly imprinted polymers or biological receptors) that mediate between the electrochemical sensor and the target analytes. These intermediaries convert biochemical information into electrical signals, enabling the sensor to detect both electrical characteristics and specific biochemical compounds simultaneously.
3Adaptability or versatility
If complex sensors with multiple components are used to achieve comprehensive plant analysis, then measurement capability is enhanced, but construction and installation complexity increases and costs rise
Solution Approach 1:
The patent merges multiple sensor functions into a single integrated device. The sensor combines electrochemical electrodes, biochemical recognition elements, and signal processing components into one unified structure that can be inserted into the plant and performs multiple analyses simultaneously. This integration reduces the number of separate components and simplifies both construction and installation while maintaining comprehensive analysis capability.
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
The sensor provides long-term, real-time, and precise biochemical characterization of plant fluids with ease of use and construction, overcoming bio-incompatibility issues and cost challenges.
Implementation Method 1
A rigid support (2) achievable in a material with a porosity substantially equal to at least 40% so as to allow the fluid to be absorbed by rigid support (2)
Implementation Method 2
rigid support (2) achievable in a material with a porosity substantially equal to at least 40% so as to allow the fluid to be absorbed by rigid support (2)
Implementation Method 3
incorporating an organic electrochemical transistor (OECT) to measure electrochemical parameters in plant fluids
Data Source
Figure 1~5
Figure 3~8
AI summary
A phyto-analysis sensor (1 ) is configured to fit into a plant (1 b) stem (1 a). The sensor includes a rigid support (2) inserted into the stem (1 a), absorbing at least one fluid of the plant (1 b); an OECT (3) comprising a drain electrode (31 ), a source electrode (32) and a gate electrode (33) which is sensitive to a solute; a first electrically conductive channel (34), connecting the drain electrode (31 ) to the source electrode (32). These electrodes are included in the rigid support (2), so they can be wet by the same fluid that wets the rigid support, allowing to identify the presence of the solute in the fluid.