Stretchable electronic devices are mechanically compatible with curvilinear contours and can accommodate mechanical deformations.They are emerging with great potentiality in applications that cannot be realized by conventional rigid electronics,such as wearable high-fidelity health monitoring and soft robotics[1,2].To achieve complex functionality,stretchable devices are generally composed of three individual functional components,that is,soft modules that match the mechanical requirements,rigid modules that contain Si-based microelectronics,and encapsulation modules that provide protection for the device.These various modules are typically assembled into stretchable devices using commercial conductive pastes such as silver pastes and adhesive anisotropic conductive films(ACF).In such case,the modular connection points are the weakest parts of a stretchable device because of the mechanical mismatch between the modules and pastes,which leads to the limited robustness of the device and constrains the function of the device under mechanical deformations[3].
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