Correction to “Ion‐Driven Interfacial Engineering of MXene‐PAM Hydrogels for Advanced Wearable ECG and AI‐Driven Blood Pressure Monitoring”

1.

Bangul, K., Bilawal, K., Syed, B. A., Waseem, U. K., Junchen, L., Shohidul, I., Iyapan, G., Raffi U. S. A., Mohamed E. H., Bee L. K. Ion‐Driven Interfacial Engineering of MXene‐PAM Hydrogels for Advanced Wearable ECG and AI‐Driven Blood Pressure Monitoring. Small Science. 2026; 6: e202500526. https://doi.org/10.1002/smsc.2025005264

In the originally published version of this article, a notation error appeared in the y‐axis labels of the strain‐dependent resistance change graphs. Specifically, the relative resistance change was incorrectly labeled as ΔR/R instead of the correct notation ΔR/R ₀. This error occurred in the following figures: Figure 5 in the main manuscript and Supporting Figures 13, 14, and 15 in the Supporting Information. The figures have now been corrected to display the accurate notation ΔR/R ₀. This correction does not affect any data, results, or conclusions presented in the article.

FIGURE 5.

Strain performance characterization of PAM, PAM–CaCl₂, and ion‐driven Ti₃C₂T _x –PAM hydrogel. (A) Relative resistance changes (ΔR/R ₀) in ion‐driven Ti₃C₂T _x –PAM hydrogel over a strain range from 300 to 1000%. (B) Gauge factors and relative resistance changes (ΔR/R ₀) in ion‐driven Ti₃C₂T _x –PAM hydrogel at 400 to 1000% strains. (C) Response and recovery times for the ion‐driven Ti₃C₂T _x –PAM hydrogel at 25% strain. (D) Stability characterization through relative resistance variations (ΔR/R ₀) in ions‐driven Ti₃C₂T _x –PAM hydrogel when stretched to 100%, across 1000 consecutive cycles. (E) Stability characterization through relative resistance variations (ΔR/R ₀) in ion‐driven Ti₃C₂T _x –PAM hydrogel when stretched to 100%, 300%, 500%, 800%, and 1000% strain across 100 consecutive cycles. (F) Conductivity measurements for hydrogel samples: S‐1 (PAM + 0.5M CaCl₂ + MX 0.5%), S‐2 (PAM + 0.5M CaCl₂ + MX 1%), and S‐3 (PAM + 0.5M CaCl₂ + MX 1.5%). Error bars represent mean ± SD (n = 3). (G) Real‐time monitoring of relative resistance changes (ΔR/R ₀) in ion‐driven Ti₃C₂T _x –PAM hydrogel during finger bending at various angles. (H) Real‐time monitoring of relative resistance changes (ΔR/R ₀) in ion‐driven Ti₃C₂T _x –PAM hydrogel during elbow bending at various angles. (I) Real‐time relative resistance changes (ΔR/R ₀) in ion‐driven Ti₃C₂T _x –PAM hydrogel are monitored during wrist bending at various angles.

Supporting Figure 13.

Relative resistance changes (ΔR/R ₀) in Ions‐driven Ti₃C₂T_x–PAM hydrogel over a 10–300% strain range.

Supporting Figure 14.

Gauge factors and relative resistance changes (ΔR/R ₀) in Ions‐driven Ti₃C₂T_x–PAM hydrogel at 10 to 300% strains.

Supporting Figure 15.

Relative resistance changes (ΔR/R ₀) in Ions‐driven Ti₃C₂T_x–PAM hydrogel over a 100% strain range at −20°C, 0°C and 40°C.

We apologize for this error.