Graphene FET Sensor Detecting Acetyl Compounds via Amino Reaction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current technologies lack an efficient method for detecting acetyl compounds, such as diacetyl, in various food products and beverages, which are essential for quality control and safety assurance.
Innovation Solution
A sensor device with a graphene FET structure, incorporating a cyclic aromatic amino compound fixed to the graphene film, detects changes in ion density through reactions with acetyl groups, allowing for the detection of acetyl compounds by measuring changes in pH or current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional detection methods are used for acetyl compounds, then detection can be performed, but the detection process is complex and requires sophisticated equipment
Solution Approach 1:
The patent replaces complex mechanical detection systems with a chemical reaction-based sensing mechanism. The amino compound reacts chemically with acetyl compounds to produce ions, which are then detected by a simple ion density measurement system, eliminating the need for sophisticated equipment while maintaining detection accuracy.
Solution Approach 2:
The patent introduces an amino compound as an intermediary substance that mediates between the acetyl compound and the detection system. The amino compound reacts with the acetyl compound to generate ions, serving as a bridge that simplifies the detection process while enabling accurate measurement of acetyl compound presence.
2Measurement precision
If simple detection methods are used, then device complexity is reduced, but the ability to detect acetyl compounds accurately is insufficient
Solution Approach 1:
The patent changes the detection parameter from direct acetyl compound measurement to ion density measurement. By monitoring the density of ions generated from the chemical reaction between amino compound and acetyl compound, the system achieves high detection sensitivity using a relatively simple measurement approach.
Solution Approach 2:
The patent performs preliminary chemical action by pre-coating the sensor with amino compounds that are ready to react with acetyl compounds. This preliminary preparation enables immediate and sensitive detection when acetyl compounds are introduced, without requiring complex real-time processing.
3Measurement precision
If the sensor uses a graphene FET structure with amino compound coating, then detection accuracy improves, but manufacturing complexity increases
Solution Approach 1:
The patent uses a thin graphene film as the sensor substrate, which can be coated with amino compounds through simple deposition processes. This thin-film approach enables high-precision ion density detection while maintaining ease of manufacture, as the graphene layer can be produced using established thin-film fabrication techniques.
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 device effectively detects acetyl compounds by measuring significant differences in charge neutral points before and after exposure to samples, providing a stable and reversible measurement process, thus ensuring accurate detection in both liquid and gaseous forms.
Implementation Method 1
The sensor section detects a change in ion density based on a reaction between an acetyl group and an amino group
Implementation Method 2
The sensor section detects a change in ion density as a change in pH value, a change in potential or current
Data Source
AI summary
According to one embodiment, a sensor device is a sensor device that detects an acetyl compound in a sample and includes a storage unit that stores a sample, a sensor section that comes into contact with the sample in the storage unit and detects a change in ion density, and an amino compound fixed to the sensor section.