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Flexibility plays a vital role in wearable electronics. Repeated bending often leads to the dramatic decrease of conductivity because of the numerous microcracks formed in the metal coating layer, which is undesirable for flexible conductors. Herein, conductive textile‐based tactile sensors and metal‐coated polyurethane sponge‐based bending sensors with superior flexibility for monitoring human touch...
In article number 1902440, Xuqing Liu and co‐workers explore the relationship between flexibility and conductivity of metal‐coated flexible substrates by introducing the Kelvin question and bubble foams. Such a theoretical model is a rationale to explain the honeycomb‐like structure of deposited metallic cells and the size of metal aggregates in different layers. Based on the Kelvin structure model,...
Surface morphology and internal structure of polyvinylidene fluoride (PVDF) nanofibers were investigated in this study. PVDF nanofibers were electrospun by two types of spinnerets, nozzle and channel spinneret, with different contents of tetrabutylammonium chloride (TBAC) and at various take‐up velocities. The new spinneret design, channel spinneret, resulted in thicker fibers while high β‐phase content...
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