Jing Xu, Chrystal Duan, Xiao Wan, Ziyuan Che, Xun Zhao, Yihao Zhou, Yang Song, Junyi Yin, Trinny Tat, Song Li, Jun Chen
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引用次数: 0
Abstract
Fatigue is a complex condition characterized by a decline in a person’s mental or physical performance. Methods to gauge fatigue include self-reported questionnaires, electroencephalography and camera-based technologies. However, these methods are typically restricted to laboratory settings, which limits their wider accessibility. Here we report a soft on-eyelid magnetoelastic sensor that can capture eye-blink parameters in real time and quantitatively decode fatigue levels. The sensor, which works in a self-powered manner, comprises a magnetomechanical coupling layer formed from a silicone rubber matrix embedded with micromagnets and a conductive gold coil patterned onto a thin thermoplastic elastomer layer. This design allows the conversion of eye movements into high-fidelity electrical signals. The sensor exhibits a Young’s modulus of 200 kPa, a stretchability of up to 530% and a pressure sensitivity of 0.2 µA kPa−1. Its thin membrane structure adheres conformally to human upper eyelid tissue and maintains intimate contact during diverse eye movements. When combined with a one-dimensional convolutional neural network and data-processing techniques, the sensor can recognize subtle eye movements and categorize fatigue levels with an accuracy of 96.4% based on six eye-blink parameters. An on-eyelid soft sensor that tracks eye movements based on the magnetoelastic effect can be used to continuously monitor and quantitatively assess levels of fatigue.
期刊介绍:
Nature Electronics is a comprehensive journal that publishes both fundamental and applied research in the field of electronics. It encompasses a wide range of topics, including the study of new phenomena and devices, the design and construction of electronic circuits, and the practical applications of electronics. In addition, the journal explores the commercial and industrial aspects of electronics research.
The primary focus of Nature Electronics is on the development of technology and its potential impact on society. The journal incorporates the contributions of scientists, engineers, and industry professionals, offering a platform for their research findings. Moreover, Nature Electronics provides insightful commentary, thorough reviews, and analysis of the key issues that shape the field, as well as the technologies that are reshaping society.
Like all journals within the prestigious Nature brand, Nature Electronics upholds the highest standards of quality. It maintains a dedicated team of professional editors and follows a fair and rigorous peer-review process. The journal also ensures impeccable copy-editing and production, enabling swift publication. Additionally, Nature Electronics prides itself on its editorial independence, ensuring unbiased and impartial reporting.
In summary, Nature Electronics is a leading journal that publishes cutting-edge research in electronics. With its multidisciplinary approach and commitment to excellence, the journal serves as a valuable resource for scientists, engineers, and industry professionals seeking to stay at the forefront of advancements in the field.