Bioelectronic Large-Area Transistors for High-Performance Sensing

Area of Science:

• Bioelectronics
• Analytical Chemistry
• Materials Science

Background:

• Bioelectronics merges biology, medicine, and electronics for integrated devices.
• Field-effect transistor (FET) sensors are key components in bioelectronic applications.

Purpose of the Study:

• To review the sensitivity, specificity, and reliability of large-area bioelectronic FET sensing devices.
• To discuss the role of analytical chemistry in optimizing FET sensor performance.
• To highlight advancements in detecting low concentrations of biological molecules.

Main Methods:

• Review of existing literature on FET-based bioelectronic sensors.
• Analysis of performance metrics including limit of identification (LOI), reliability, and selectivity.
• Exploration of molecularly imprinted polymers (MIPs) for enhanced detection.

Main Results:

• FET sensors demonstrate high sensitivity, detecting concentrations in the picomolar to zeptomolar range.
• Single-molecule detection is achievable in small volumes (0.1 mL) with high reliability.
• Optimized LOI minimizes random errors to as low as 1%.

Conclusions:

• Bioelectronic FET sensors offer exceptional sensitivity and reliability for molecular detection.
• Molecularly imprinted polymers provide a sustainable and robust alternative to natural antibodies for selective FET sensing.