Constant resonance frequency over 10%–25% strain
A stretchable magnetic film that maintains high-frequency performance under stretching via periodic wrinkles, providing a stable magnetic core for flexible microwave devices.
Kelei, Xue · Yang, Huali · Cui, Anyang · Cheng, Wenjuan · Jiang, Dongmei · Xu, Yang · Shang, Tian · Zhan, Qingfeng
ACS Applied Materials & Interfaces 2023
200 μm wide ribbon-patterned film shows best stretching-insensitive behavior
No significant performance degradation after thousands of stretch-release cycles