Researchers have developed a high-uniformity miniaturized pmut array for wearable ultrasound imaging with broadband and high-sensitivity capabilities. The technology appears to be related to various advancements in ultrasonic transducers, including those for flowmeters, micropumps, and phased-array transducers. These developments seem to be focused on improving acoustic performance and exploring new applications, including photoacoustic imaging and in-air rangefinding.