Sensor arrays for liquid sensing--electronic tongue systems

Area of Science:

• * Analytical Chemistry
• * Sensor Technology

Background:

• * Electronic tongue systems are advanced multisensor devices for automatic sample analysis.
• * Recent years have seen a surge in research and publications on electronic tongues.
• * These systems are crucial for recognizing characteristic properties of complex composition samples.

Purpose of the Study:

• * To review the diverse architectures of electronic tongue systems.
• * To summarize pattern recognition methods used for sensor array data analysis.
• * To discuss emerging challenges and future trends, including miniaturization and hybrid systems.

Main Methods:

• * Review of potentiometric, voltammetric, mass-, and optical-sensor-based electronic tongue architectures.
• * Analysis of various pattern recognition systems applied to sensor array data.
• * Consideration of miniaturization techniques and hybrid systems for liquid sensing.

Main Results:

• * Significant increase in publications highlights the growing importance of electronic tongues.
• * Diverse sensor types (potentiometric, voltammetric, mass, optical) are employed in electronic tongue designs.
• * Various pattern recognition approaches are utilized for effective data analysis.

Conclusions:

• * Electronic tongues offer versatile solutions for complex sample analysis.
• * Continued research is expanding the capabilities and applications of these systems.
• * Miniaturization and hybrid systems represent key future developments in liquid sensing technology.