US Patent Issued to The Trustees of the University of Pennsylvania on Aug. 5 for "Photoactivated selective release (PHASR) of droplets from microwell arrays" (Pennsylvania, Texas Inventors)

ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,377,415, issued on Aug. 5, was assigned to The Trustees of the University of Pennsylvania (Philadelphia).

"Photoactivated selective release (PHASR) of droplets from microwell arrays" was invented by Yongwon Choi (Bryn Mawr, Pa.), Daeyeon Lee (Wynnewood, Pa.), Junhyong Kim (Narberth, Pa.) and Syung Hun Han (Austin, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is photoactivated selective release (or PHASR) of droplets from a microwell array enabled by a photoresponsive polymer layer integrated into the microfluidic device. This photoresponsive layer is placed in between a microwell array that traps a large number of droplets and a monolith...