Abstract Epidermal electronics play increasingly important roles in human-machine interfaces.However, their efficient fabrication while maintaining device stability and reliability remains an unresolved challenge.Here, a facile in situ Joule heating method is proposed for fabricating stable epidermal electronics on a polyvinyl alcohol (PVA) substrate.Benefitting from the precise control of heating locations, the crystallization and enhanced rigidity of PVA are restricted to desired areas, leading to strain isolation Inline - Pucks of the active regions.
As a result, the electronic device can be conformably attached to skin while showing negligible degradation in device performance during deformation.Based on this method, a flexible surface electromyography (sEMG) sensor with outstanding stability and highly comfortable wearability is demonstrated, showing high accuracy (91.83%) for human hand gesture recognition.These results imply that the fabrication method proposed in this research is a facile and reliable approach for Curl shampoo the fabrication of epidermal electronics.