All 3D-printed stretchable piezoelectric nanogenerator with non-protruding kirigami structure

By Xinran Zhou, Kaushik Parida, Oded Halevi, Yizhi Liu, Jiaqing Xiong, Shlomo Magdassi, Pooi See Lee. Nano Energy, 2020

221 citations recorded by the source corpus.

Abstract With the advancement of wearable electronics, stretchable energy harvesters are attractive to reduce the need of frequent charging of wearable devices. In this work, a stretchable kirigami piezoelectric nanogenerator (PENG) based on barium titanate (BaTiO3) nanoparticles, Poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) matrix, and silver flakes-based electrode is fabricated in an all-3D printable process suited for additive manufacturing. The 3D printable extrusion ink is formulated for facile solvent evaporation during layer formation to enable heterogenous multilayer stacking. A well-designed modified T-joint-cut kirigami structure is realized to attain a non-protruding, high structural stretchability performance, overcoming the out-of-plane displacement of the typical kirigami structure and therefore enabling the pressing-mode of a kirigami-structured PENG. This PENG can be stretched to more than 300% strain, which shows a great potential for application in wearable electronic systems. Furthermore, a self-powered gait sensor is demonstrated using this PENG.

Subfields: Biomedical Engineering, Cognitive Neuroscience, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/d4f98b7e1c731fedc922b92b06171721e00bc4c0

Citations in the corpus

• Design, manufacturing and applications of wearable triboelectric nanogenerators (2021, unknown): “Biofuel cells possess appealing biocompatibility [9,10] and piezoelectric generators (PENGs) hold outstanding sensitivity [11 – 14], whereas their efficiencies are not satisfactory.”