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Fully Bioabsorbable Natural‐Materials‐Based Triboelectric Nanogenerators
Author(s) -
Jiang Wen,
Li Hu,
Liu Zhuo,
Li Zhe,
Tian Jingjing,
Shi Bojing,
Zou Yang,
Ouyang Han,
Zhao Chaochao,
Zhao Luming,
Sun Rong,
Zheng Hairong,
Fan Yubo,
Wang Zhong Lin,
Li Zhou
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201801895
Subject(s) - triboelectric effect , materials science , fibroin , biocompatibility , nanogenerator , nanotechnology , electronics , voltage , biomedical engineering , electrical engineering , composite material , silk , engineering , piezoelectricity , metallurgy
Implantable medical devices provide an effective therapeutic approach for neurological and cardiovascular diseases. With the development of transient electronics, a new power source with biocompatibility, controllability, and bioabsorbability becomes an urgent demand for medical sciences. Here, various fully bioabsorbable natural‐materials‐based triboelectric nanogenerators (BN‐TENGs), in vivo, are developed. The “triboelectric series” of five natural materials is first ranked, it provides a basic knowledge for materials selection and device design of the TENGs and other energy harvesters. Various triboelectric outputs of these natural materials are achieved by a single material and their pairwise combinations. The maximum voltage, current, and power density reach up to 55 V, 0.6 µA, and 21.6 mW m −2 , respectively. The modification of silk fibroin encapsulation film makes the operation time of the BN‐TENG tunable from days to weeks. After completing its function, the BN‐TENG can be fully degraded and resorbed in Sprague–Dawley rats, which avoids a second operation and other side effects. Using the proposed BN‐TENG as a voltage source, the beating rates of dysfunctional cardiomyocyte clusters are accelerated and the consistency of cell contraction is improved. This provides a new and valid solution to treat some heart diseases such as bradycardia and arrhythmia.