Researchers have been studying acoustic streaming in mid-air phased arrays, exploring its properties and potential applications. The studies have examined various aspects, including the suppression of acoustic streaming, the creation of specific acoustic resonances, and the use of acoustic modulation to enhance streaming in microfluidics. The research may have implications for fields such as mid-air haptics, levitation, and microfluidics, with some studies suggesting potential for contactless control of droplets and improved ultrasonic airflow.