Biologically Coupled Gate Field-Effect Transistors Meet in Vitro Diagnostics

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Biosensing

Background:

• Biological phenomena are intrinsically linked to ion and biomolecule behavior.
• Biosensors detecting ionic and biomolecular charges enable label-free, enzyme-free analysis of biological processes.
• Potentiometric biosensors, like bio-FET sensors, directly detect charges via the field effect, suitable for in vitro diagnostics (IVD).

Purpose of the Study:

• To review and compare recent advancements in biologically coupled gate field-effect transistor (bio-FET) sensors.
• To highlight the potential of bio-FET sensors in clinical diagnostics and neuroscience.
• To discuss the development of bioelectrical interfaces for selective target detection.

Main Methods:

• Review of recent literature on bio-FET sensor technology.
• Analysis of different semiconducting materials (inorganic and organic) for bio-FET applications.
• Discussion of bioelectrical interface strategies using synthetic and biomimetic membranes.

Main Results:

• Bio-FET sensors facilitate direct detection of biological charges, crucial for understanding cellular activities and biomolecular recognition.
• Development of bioelectrical interfaces enables selective detection based on intrinsic molecular charges.
• Bio-FET platforms are compatible with integrated circuits for high-throughput, miniaturized IVD systems.

Conclusions:

• Bio-FET sensors are promising for label-free, enzyme-free diagnostics, particularly in IVD.
• The technology supports applications in clinical diagnostics and neuroscience research.
• Bio-FET sensor platforms are suitable for developing simple, miniaturized electrical systems for disease prevention and early detection.