“…Ionexchange reactions between calcium ions in the dressing and sodium ions in the wound exudate results in the formation of a hydrogel layer on the wound surface, providing a moist environment that promotes wound healing. 17,18 Microuidic techniques have been widely used in recent years for biological detection, drug screening, substance isolation, gene sequencing, and in vitro diagnosis, among others, due to advantages that include low loading volumes, rapid detection, cost effectiveness, and high portability. [19][20][21][22] Many research groups (such as S. H. Lee, J. Qin, Q. Liang, et al) have proposed and used microuidic spinning to fabricate a series of bers with varying morphologies, which broadens the applications of microuidic chips.…”