Authors
Xingyu Hou, Jiaqi Zhu, Chengfeng Pan, Xin Wang, Zhenzhou Nie, Qianli Ma, Zifeng Zhang, Junnan Xue, Huihui Du, Kai Fung Chan, Chuan Fei Guo, Li Zhang
Published in
Science advances. Volume 12. Issue 37. Pages eaef6473. Sep 11, 2026. Epub Sep 09, 2026.
Abstract
Iontronic pressure sensors featuring high sensitivity are promising across different emerging fields. In applications requiring high-fidelity sensing such as surgeries, reliable pressure monitoring necessitates sensitivity and stability at the same time to ensure safety. However, existing iontronic sensors often face a trade-off between them-soft ionic materials with high conductivity often present pronounced viscoelasticity, resulting in a low sensitivity-to-drift-rate (S/D) ratio. Here, we report a polyelectrolyte-based iontronic pressure sensor that achieves a nearly one order-of-magnitude improvement in S/D ratio over state-of-the-art designs using a polarity-balance strategy in the polyelectrolyte to simultaneously regulate ionic conductivity and viscoelasticity. The resulting sensor exhibits ultrahigh sensitivity (119.5 per kilopascal) and exceptional stability (drift rate < 1%) under prolonged pressures up to 450 kilopascals, enabling nearly drift-free pressure detection for high-precision surgical operations in both surgeon-operated and robotic-assisted procedures. This work provides an extensible material design strategy to enhance sensitivity while suppressing signal drift in soft pressure sensors, with broad relevance to robotics, medical devices, and wearables.
PMID:
42715301
Bibliographic data and abstract were imported from PubMed on 10 Sep 2026.
Read full publication at:
Please sign in
to see all details.
Advertisement
Stats
- Recommendations n/a n/a positive of 0 vote(s)
- Views 3
- Comments 0