An ultrastretchable seamlessly integrated contactless charging microsystem towards skin-attachable wireless microelectronics.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 39952967.
- Also identified by DOI 10.1038/s41467-025-56881-z and PMC identifier 11828911.
- Licence recorded as CC BY-NC-ND.
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Abstract
For electronics to be wearable, contactless charging and overall deformability are necessary pre-conditions. However, the current heterogeneous integration based on different active materials and separate manufacturing often leads to mechanical mismatch. Here, we report an ultrastretchable all-in-one integrated MXene-based microsystem comprising wireless coils, micro-supercapacitors (MSCs) and strain sensors. The seamless configuration without any connecting interface dramatically improves the structural integrity of the microsystem, and a pre-crumpled structure endows it with superior stretchability. Attributed to these, our MSCs can be wirelessly charged in ~20 s under various types of deformation and are capable of powering strain sensors, responding rapidly to body motion signals. Moreover, the MSCs display a high specific capacitance of 76.82 F cm<sup>-3</sup>, and superb mechanical stability with 98.5% capacitance retention after biaxial stretching 1000 cycles from 0% to 500% areal strain. Therefore, this work sheds new insights into design and implementation of skin-attachable wireless microelectronics.