Applied Physics2026-03-191 minarXiv:2603.19409expressAluminum Nitride Piezoelectric TransducerThe electric current in a wall outlet is like water in a high-pressure pipe. To power a delicate chip, the pressure needs to be reduced, and this is usually done by bulky coils with iron cores.Ziqian Yao·Clarissa Daniel·Kaicheng Pan·Tzu-Hsuan Hsu·Heather Chang·Mark S Goorsky·Juan Rivas-Davila·Ruochen LuLeo EsakiShuji Nakamurasemiconductor👍👎☆SimplePopularAdvanced