@article{yang_li_zhou_li_zhu_ma_2023, title={High-dielectric porous CaCu3Ti4O12/reduced graphene oxide/ polydimethylsiloxane foam for wearable, breathable and low crosstalk capacitive pressure sensor}, volume={40}, ISSN={["2452-2627"]}, DOI={10.1016/j.flatc.2023.100522}, abstractNote={High-dielectric porous CaCu3Ti4O12 (CCTO)/reduced graphene oxide (rGO)/polydimethylsiloxane (PDMS) foam is prepared through a simple sacrificial salt-templating method. By introducing CCTO and rGO fillers into the porous PDMS scaffold, a three-dimensional porous CCTO/rGO/PDMS foam with large dielectric constant of 107.8 is obtained. The CCTO/rGO/PDMS foam also has a low Young's modulus of 0.007 MPa as well as a high water vapor transmission (WVT) rate of 14 mg/cm2·h (0.5 mm thickness). A wearable, breathable and low crosstalk capacitive pressure sensor based on CCTO/rGO/PDMS foam and porous Ag nanowires (NW)/thermoplastic polyurethane (TPU) electrodes has been fabricated. The sensor displays fast response speed (<48 ms), excellent sensitivity (3.5 kPa−1), superior cyclic repeatability and stability (11,000 cycles), as well as high gas permeability (WVT rate of 13 mg/cm2·h). The sensor can be attached to different body positions to monitor diverse physiological activities including breathing, vocal cord vibration and finger touch pressure. Moreover, the pressure sensor array integrated by multiple sensor units with low crosstalk is fabricated to detect spatial pressure distribution.}, journal={FLATCHEM}, author={Yang, Qiuyue and Li, Chen and Zhou, Weixin and Li, Yi and Zhu, Yong and Ma, Yanwen}, year={2023}, month={Jul} } @article{yao_zhou_hinson_dong_wu_ives_hu_huang_zhu_2022, title={Ultrasoft Porous 3D Conductive Dry Electrodes for Electrophysiological Sensing and Myoelectric Control}, volume={5}, ISSN={["2365-709X"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85132598682&partnerID=MN8TOARS}, DOI={10.1002/admt.202101637}, abstractNote={Abstract}, number={10}, journal={ADVANCED MATERIALS TECHNOLOGIES}, author={Yao, Shanshan and Zhou, Weixin and Hinson, Robert and Dong, Penghao and Wu, Shuang and Ives, Jasmine and Hu, Xiaogang and Huang, He and Zhu, Yong}, year={2022}, month={May} } @article{zhou_yao_wang_du_ma_zhu_2020, title={Gas-Permeable, Ultrathin, Stretchable Epidermal Electronics with Porous Electrodes}, volume={14}, ISSN={["1936-086X"]}, DOI={10.1021/acsnano.0c00906}, abstractNote={We present gas-permeable, ultrathin, and stretchable electrodes enabled by self-assembled porous substrates and conductive nanostructures. Efficient and scalable breath figure method is employed to introduce the porous skeleton and then silver nanowires (AgNWs) are dip-coated and heat-pressed to offer electric conductivity. The resulting film has a transmittance of 61%, sheet resistance of 7.3 Ω/sq, and water vapor permeability of 23 mg cm-2 h-1. With AgNWs embedded below the surface of the polymer, the electrode exhibits excellent stability with the presence of sweat and after long-term wear. We demonstrate the promising potential of the electrode for wearable electronics in two representative applications - skin-mountable biopotential sensing for healthcare and textile-integrated touch sensing for human-machine interfaces. The electrode can form conformal contact with human skin, leading to low skin-electrode impedance and high-quality biopotential signals. In addition, the textile electrode can be used in a self-capacitance wireless touch sensing system.}, number={5}, journal={ACS NANO}, author={Zhou, Weixin and Yao, Shanshan and Wang, Hongyu and Du, QIngchuan and Ma, Yanwen and Zhu, Yong}, year={2020}, month={May}, pages={5798–5805} }