An ultrathin, rapidly fabricated, flexible giant magnetoresistive electronic skin

Abstract In recent years, there has been a significant increase in the prevalence of electronic wearables, among which flexible magneto-electronic skin has emerged as a key component. This technology is part of the rapidly progressing field of flex-ible wearable electronics, which has opened a new avenue in human perceptual development: magnetic sense. However, magneto-electronic skin is limited due to its low sensitivity and substantial field as a wearable electronic device for sens-ing minor magnetic fields. Additionally, achieving efficient and non-destructive delamination in flexible magnetic sensors remains a significant challenge, hindering their development. In this work, we demonstrate a novel magneto-electronic touchless interactive electronic that utilizes a flexible giant magnetoresistive sensor array. The flexible magnetic sensor array has been developed through an electrochemical delamination process, and the resultant ultra-thin flexible elec-tronic system possesses both ultra-thin and non-destructive characteristics. The flexible magnetic sensor is capable of achieving a bending angle of up to 90 degrees, maintaining its performance integrity even after multiple repetitive bend-ing cycles. Our research also encompasses demonstrations of non-contact interaction and pressure sensing. This re-search is anticipated to significantly contribute to the advancement of high-performance flexible magnetic sensors and catalyze the development of more sophisticated magnetic electronic skins.