Biosignal Amplifiers Based on Low‐Noise Organic Transistors with Printed Electrodes

The monitoring of microvolt-level biosignals such as electroencephalograms requires the application low-noise signal amplifier circuits, which, for single-use cases, must be fabricated disposability using low-cost manufacturing techniques. One promising solution production circuits digital biosensing is emerging technology printed circuits. Here, a low-noise-electrode printing process organic transistors that can carry out precision measurement brain activity proposed. In transistor fabrication process, Ag electrodes are processed via flat stamp parallel printing, and fine-process optimization to minimize charge-trapping effect enables three-order reduction in noise. used produce an pseudo-complementary metal-oxide-semiconductor with small noise level 2.2 µVp-p at 10 Hz, which wave close correlation signals obtained commercialized system.