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However, a big challenge in this soft functional material development is to achieve a high piezoelectric property with long\u2010term stability in a biological environment. Here, a one\u2010step strategy for fabricating core\/shell poly(vinylidene difluoride) (PVDF)\/dopamine (DA) nanofibers (NFs) with a very high \u03b2\u2010phase content and self\u2010aligned polarization is reported. The self\u2010assembled core\/shell structure is believed essential for the formation and alignment of \u03b2\u2010phase PVDF, where strong intermolecular interaction between the \uf8ffNH<jats:sub>2<\/jats:sub> groups on DA and the \uf8ffCF<jats:sub>2<\/jats:sub> groups on PVDF is responsible for aligning the PVDF chains and promoting \u03b2\u2010phase nucleation. The as\u2010received PVDF\/DA NFs exhibit significantly enhanced piezoelectric performance and excellent stability and biocompatibility. An all\u2010fiber\u2010based soft sensor is fabricated and tested on human skin and in vivo in mice. The devices show a high sensitivity and accuracy for detecting weak physiological mechanical stimulation from diaphragm motions and blood pulsation. This sensing capability offers great diagnostic potential for the early assessment and prevention of cardiovascular diseases and respiratory disorders.<\/jats:p>","DOI":"10.1002\/adma.202006093","type":"journal-article","created":{"date-parts":[[2020,12,4]],"date-time":"2020-12-04T05:26:20Z","timestamp":1607059580000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":235,"title":["High\u2010Performance Poly(vinylidene difluoride)\/Dopamine Core\/Shell Piezoelectric Nanofiber and Its Application for Biomedical Sensors"],"prefix":"10.1002","volume":"33","author":[{"given":"Tong","family":"Li","sequence":"first","affiliation":[{"name":"School of Chemical Engineering Nanjing University of Science and Technology  #200 Xiaolingwei Nanjing 210094 P. R. 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