Flexible Piezoelectric Sensor Based on Two‑Dimensional Topological Network of PVDF/DA Composite Nanofiber Membrane  

作　　者：Junpeng Xiong Ling Wang Fanghua Liang Mengying Li Yoshinori Yabuta Muhammad Asim Iqbal Gopiraman Mayakrishnan Jian Shi Ick Soo Kim 

机构地区：[1]Graduate School of Medicine,Science and Technology,Shinshu University,3‑15‑1 Tokida,Ueda,Nagano,Japan [2]Nano Fusion Technology Research Group,Division of Molecules and Polymers,Institute for Fiber Engineering(IFES),Interdisciplinary Cluster for Cutting Edge Research(ICCER),Shinshu University,Tokida 3‑15‑1,Ueda,Nagano 386‑8567,Japan [3]Faculty of Textile Science and Technology,Shinshu University,3‑15‑1 Tokida,Ueda,Nagano 386‑8567,Japan [4]School of Materials and Chemical Technology,Tokyo Institute of Technology,2‑12‑1 Ookayama,Meguro‑ku,Tokyo 152‑8552,Japan

出　　处：《Advanced Fiber Materials》2024年第4期1212-1228,共17页先进纤维材料（英文）

基　　金：supported by JST SPRING,Grant Number JPMJSP2144(Shinshu University).

摘　　要：Owing to the robust scalability,ease of control and substantial industrial applications,the utilization of electrospinning technology to produce piezoelectric nanofiber materials demonstrates a significant potential in the development of wearable products including flexible wearable sensors.However,it is unfortunate that the attainment of high-performance piezoelec-tric materials through this method remains a challenging task.Herein,a high-performance composite nanofiber membrane with a coherent and uniformly dispersed two-dimensional network topology composed of polyvinylidene fluoride(PVDF)/dopamine(DA)nanofiber membranes and ultrafine PVDF/DA nanofibers was successfully fabricated by the electrospinning technique.Based on the evidence obtained from simulations,experimental and theoretical results,it was confirmed that the unique structure of the nanofiber membrane significantly enhances the piezoelectric performance.The present PVDF/DA composite nanofibers demonstrated a remarkable piezoelectric performance such as a wide response range(1.5–40 N),high sensitivity to weak forces(0–4 N,7.29 V N^(-1)),and outstanding operational durability.Furthermore,the potential application of the present PVDF/DA membrane as a flexible wearable sensor for monitoring human motion and subtle physiological signals has also been validated.This work not only introduces a novel strategy for the application of electrospun nanofibers in sensors but also provides new insights into high-performance piezoelectric materials.

关 键 词：ELECTROSPINNING Polyvinylidene fluoride Ultrafine nanofiber Piezoelectric materials Flexible wearable sensor 

分 类 号：TB383[一般工业技术—材料科学与工程] TP212[自动化与计算机技术—检测技术与自动化装置]