In recent years, there has been a significant increase in the prevalence of electronic wearables, among which flexible magnetoelectronic skin has emerged as a key component. This technology is part of the rapidly progressing field of flexible wearable electronics, which has facilitated a new human perceptual development known as the magnetic sense. However, the magnetoelectronic skin is limited due to its low sensitivity and substantial field limitations as a wearable electronic device for sensing minor magnetic fields. Additionally, achieving efficient and non-destructive delamination in flexible magnetic sensors remains a significant challenge, hindering their development. In this study, we demonstrate a novel magnetoelectronic touchless interactive device that utilizes a flexible giant magnetoresistive sensor array. The flexible magnetic sensor array was developed through an electrochemical delamination process, and the resultant ultra-thin flexible electronic system possessed 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 bending cycles. Our study also provides demonstrations of non-contact interaction and pressure sensing. This research is anticipated to significantly contribute to the advancement of high-performance flexible magnetic sensors and catalyze the development of more sophisticated magnetic electronic skins.

In recent years, there is a meteoric rise in the prevalence of electronic wearables, and flexible wearables have attracted tremendous attention in human–machine interfaces due to their high biocompatibility, functionality, conformability, and low‐cost. Flexible magnetic smart skin is part of this rapidly progressing field of flexible wearable electronics, which has paved the way for a new path for human perceptual development, as they may form a new perception, also known as magnetic sense, that is, the capacity to detect and interact with magnetic fields. In this review, the concept of the magnetic smart skin is defined: magnetoelastomers and flexible magnetic sensors. In magnetoelastomers, different sources of magnetic field, structures, and applications are summarized by recent and renowned research. In flexible magnetic sensors, different flexible substrates, sensor types, and applications are also summarized. This review further concludes by discussing the outlook and current challenges of magnetic smart skin in human–machine interfaces.

Healthcare‐associated infections are a major problem in hospitals, and regular disinfection methods cannot guarantee that all pathogens are eliminated. Non‐contact human–computer interactions can effectively reduce the risk of contamination by preventing direct contact between medical staff and electronic products. In this study, a new type of flexible and highly malleable magnetic skin composed of a mixture of an elastic matrix and permanent magnetic powder is demonstrated. In addition, the relationship between the magnetic skin properties and the elastic matrix, magnetic powder material, and their ratio is studied. In addition, the application of magnetic skin in gesture recognition (representing discrete gesture input) and magnetic positioning (representing continuous input) is explored to easily achieve touchless human–computer interactions. Both perform well and provide a new way for future human–computer interaction.

An ion beam etching system with etching endpoint detection (EPD) capability based on optical emission spectroscopy (OES) was conceived, built, and tested. An expansion chamber was added on the right side of the etching chamber to fix the optical detector for in-situ detecting. In this system, the optical detector was mounted on a seven-shaped bracket, which was fixed by two straight guides, thus the position of the optical detector could be adjusted arbitrarily to collect the emission spectrum generated by the sample during the etching process. The signal was transmitted by optical fiber to the computer for processing, and the etching endpoint could be detected after analyzing the data. Firstly, we used simple substances (Al, Cr, Si, and Mg) to analyze the feasibility of the system and determine the best position of the optical detector. In addition, we also tested the detection limit of the system. Finally, a complex multilayer film sample with different materials was tested, and the results showed that the system could clearly detect the characteristic emission lines of different layers and had a good real-time performance and excellent endpoint detection capabilities.

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.