EurekAlert  June 22, 2021 Precisely controlling nanoparticles is a crucial ability for many emerging technologies. Researchers at Duke University used sound waves to create electric fields that provide the push. The new acoustoelectronic tweezer approach works by placing a piezoelectric substrate beneath a small chamber filled with liquid. Four transducers are aligned on the chamber’s sides, which send sound waves into the piezoelectric substrate. These sound waves bounce around and interact with one another to create a stable pattern and create electrical fields which dynamically alternate between positive and negative charges polarizing the nanoparticles in liquid, which serves as a […]