A Printed Microscopic Universal Gradient Interface for Super Stretchable Strain‐Insensitive Bioelectronics

• DOI: 10.1002/adma.202414203
• Publication Date: 2025-02-11T02:53:42Z
• Authors: Kaidong Song; Jingyuan Zhou; Chen Wei; Ashok Ponnuchamy; Md Omarsany Bappy; Yuxuan Liao; Qiang Jiang; Yipu Du; Connor J. Evans; Brian C. Wyatt; Thomas O’ Sullivan; Ryan K. Roeder; Babak Anasori; Anthony J. Hoffman; Lihua Jin; Xiangfeng Duan; Yanliang Zhang
• Keywords: Bioelectronics; Stretchable electronics; Wearable Technology; Electronic materials; Electronic Skin; Flexible Electronics; Printed Electronics

Abstract Stretchable electronics capable of conforming to nonplanar and dynamic human body surfaces are central for creating implantable on‐skin devices high‐fidelity monitoring diverse physiological signals. While various strategies have been developed produce stretchable devices, the signals collected from such often highly sensitive local strain, resulting in inevitable convolution with surface strain‐induced motion artifacts that difficult distinguish intrinsic Here all‐printed super strain‐insensitive bioelectronics using a unique universal gradient interface (UGI) reported bridge gap between soft biomaterials stiff electronic materials. Leveraging versatile aerosol‐based multi‐materials printing technique allows precise spatial control over stiffnesses submicron resolution, UGI enables negligible resistivity changes under 180% uniaxial stretch ratio. Various directly printed on health high signal quality near‐perfect immunity artifacts, including semiconductor‐based photodetectors sensing blood oxygen saturation levels metal‐based temperature sensors. The concept this work will significantly simplify fabrication accelerate development broad range wearable real‐time personalized therapeutics.