Epidermal Impedance Sensing Sheets for Precision Hydration Assessment and Spatial Mapping - Xian Huang; Huanyu Cheng; Kaile Chen; Yilin Zhang; Yihui Zhang; Yuhao Liu; Chenqi Zhu; Shao-chi Ouyang; Gil-Woo Kong; Cunjiang Yu; Yonggang Huang; John A. Rogers (IEEE Trans. Biomed. Eng., 2013)