TY - JOUR
T1 - Conductive hollow hydrogel fibers toward high-sensitivity bio-textiles
AU - Deng, Pengfei
AU - He, Zijian
AU - Shen, Yingnan
AU - Mohammad, Noor Mohammad
AU - Xu, Wenhui
AU - Han, Bumsoo
AU - Li, Tian
N1 - The authors acknowledge support from the David and Lucile Packard Foundation. This study was partially supported by a grant from NSF (MCB-2134603) and a Program Grant from the Purdue Institute of Drug Discovery. Conceptualization, T.L. and P.D.; methodology, P.D. Z.H. and Y.S.; validation, P.D. Z.H. and Y.S.; investigation, P.D. Z.H. Y.S. N.M.M. and W.X.; writing \u2013 original draft, P.D.; writing \u2013 review & editing, P.D. T.L. Z.H. N.M.M. Y.S. and B.H.; visualization, P.D. and Z.H.; funding acquisition, T.L. and B.H.; resources, T.L. and B.H.; supervision, T.L. The authors declare no competing interests.
The authors acknowledge support from the David and Lucile Packard Foundation . This study was partially supported by a grant from NSF ( MCB-2134603 ) and a Program Grant from the Purdue Institute of Drug Discovery .
PY - 2024/7/17
Y1 - 2024/7/17
N2 - Conductive hydrogels are becoming valuable in creating soft, flexible interfaces for biological tissue sensing due to their bio-compatibility and tissue-like mechanical properties. However, when tailored to epidermal sensors, they face low breathability and sensitivity issues, impacting long-term comfort and functionality. Addressing these issues, here we report sensing textiles from hollow conductive hydrogel fibers using co-axial microfluidic printing, allowing precise control of hollow channel diameters. The mesh-like textile demonstrates a sensitivity of 4.69 kPa−1, significantly outperforming the solid-structured counterparts (0.77 kPa−1). Moreover, the bio-textile demonstrates bio-compatibility, exhibiting no significant cytotoxic effects on human dermal fibroblasts after 3 days. To enhance durability and reusability, we integrate conductive fibers with metal wires for energy harvesting, achieving an open-circuit voltage output of ∼0.74 V. Notably, the voltage remains at ∼0.53 V even after dehydration. The high sensitivity, softness, and flexibility make our bio-textile a promising candidate for multifunctional sensing and energy harvesting in bio-interface devices.
AB - Conductive hydrogels are becoming valuable in creating soft, flexible interfaces for biological tissue sensing due to their bio-compatibility and tissue-like mechanical properties. However, when tailored to epidermal sensors, they face low breathability and sensitivity issues, impacting long-term comfort and functionality. Addressing these issues, here we report sensing textiles from hollow conductive hydrogel fibers using co-axial microfluidic printing, allowing precise control of hollow channel diameters. The mesh-like textile demonstrates a sensitivity of 4.69 kPa−1, significantly outperforming the solid-structured counterparts (0.77 kPa−1). Moreover, the bio-textile demonstrates bio-compatibility, exhibiting no significant cytotoxic effects on human dermal fibroblasts after 3 days. To enhance durability and reusability, we integrate conductive fibers with metal wires for energy harvesting, achieving an open-circuit voltage output of ∼0.74 V. Notably, the voltage remains at ∼0.53 V even after dehydration. The high sensitivity, softness, and flexibility make our bio-textile a promising candidate for multifunctional sensing and energy harvesting in bio-interface devices.
KW - bio-interface
KW - bioelectronics
KW - breathability
KW - co-axial printing
KW - deformation sensors
KW - energy harvesting
KW - hollow fibers
KW - human-machine interaction
KW - hydrogel textile
KW - wearable devices
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U2 - 10.1016/j.xcrp.2024.102047
DO - 10.1016/j.xcrp.2024.102047
M3 - Article
AN - SCOPUS:85197036422
SN - 2666-3864
VL - 5
JO - Cell Reports Physical Science
JF - Cell Reports Physical Science
IS - 7
M1 - 102047
ER -