Quasi-thermal noise is a type of noise that arises in electronic devices and circuits due to thermal fluctuations. It is often described as a combination of thermal noise and shot noise, and is prevalent in devices such as transistors and diodes. Quasi-thermal noise can impact the performance of electronic systems by introducing unwanted signals and reducing the signal-to-noise ratio. Researchers study ways to mitigate and minimize quasi-thermal noise in order to improve the overall performance and efficiency of electronic devices.