Bioinspired Kirigami Fish-Based Highly Stretched Wearable Biosensor for Human Biochemical-Physiological Hybrid Monitoring

The human quest for beauty is manifested in numerous body decoration fashions such as makeups, tattoos, and stickers. The ancient kirigami art offers a variety of choices for sticker-type body beautification, whereby with simple cutting, complex networks potential use as microfluidic channels and stretchable materials can be fabricated. Inspired by the fish-scale pattern and kirigami art, a fish-like wearable biosensor is designed and fabricated. This highly stretchable, well-aerated, disposable, and wearable fish sticker enables sweat collection, diagnostics, and motion monitoring. A structure of photonic crystals is integrated in the paper channels for fluorescence enhancement sensing of sweat lactic acid and urea, and a stretchable electronic paper network induced sensitive resistance changes during the movement. The sensor is amenable to a variety of applications, such as personal care and human-machine interaction. The combination of art and sensing also provides a pleasant-looking solution for both health and beauty.