文献类型：期刊文献

英文题名：3D printing-directed flexible strain sensors of accordion-like architecture to achieve ultrastretchability with the assist of ultrasonic cavitation treatment

作者：Qu, Y.F.[1]; Ma, J.H.[1]; He, Y.Q.[1]; Zhang, L.[1]; Ren, F.C.[2]; Li, B.[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Shanghai Institute of Special Equipment Inspection and Technical Research, Shanghai, 200062, China

年份：2021

卷号：2085

期号：1

外文期刊名：Journal of Physics: Conference Series

收录：EI(收录号：20215011312569)

语种：英文

外文关键词：Flexible electronics - Deposition - Ultrasonic applications - 3D printers - Struts - Substrates - Cavitation - Wearable technology

摘要：A new class of accordion-like cellular architecture with sinusoidal struts is designed to enhance the planar stretchability of cellular solids, aiming to fabricate flexible strain sensors with ultrastretchability. The combination manufacturing process of fused deposition modeling (FDM) 3D printing technique and ultrasonic cavitation-enabled treatment was introduced into the fabrication of flexible strain sensors made of thermoplastic polyurethane (TPU) substrate and carbon nanotubes (CNTs). A negative Poisson's ratio (NPR) architecture made of TPU was firstly 3D-printed by FDM. The ultrasonic cavitation treatment was then conducted on the soft auxetic structure immersing in CNTs liquid, aiming to embed the CNTs into the surface layer of the flexible TPU substrate with NPR configurations. Instead of 3D printing the TPU matrix composite after hybridization inside the matrix material, the hybrid manufacturing procedure can ensure that the intrinsic excellent mechanical properties of TPU are not embrittled. Besides, the sinusoidal struts in accordion-like cellular architectures offer a design route to extend the material property chart to achieve ultrahigh stretchability in lightweight 3D printable flexible polymers for the applications that require combined stretchability, lightweight, and energy absorption such as soft robotics, stretchable electronics, and wearable protection shields. ? Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.