Recycling of human teeth for piezoelectric energy harvesting

IF 5.4 1区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY GIANT Pub Date : 2024-08-13 DOI:10.1016/j.giant.2024.100333
Yuanyuan Yin , Shuaijie Liu , Yuehui Wang , Sihan Yang , Min Ding , Xiaohui Xu , Wei Ji , Jinlin Song
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Abstract

In the human body, non-centrosymmetric biological structures exhibit piezoelectric effect across from microscopic biomolecular building blocks to macroscopic tissues and organs. However, the fabrication of piezoelectric devices from discarded natural tissues and organs has rarely been exploited for energy harvesting applications. Herein, the extracted human teeth were recycled as an active layer in a piezoelectric nanogenerator for power generation. Due to the piezoelectric effect of enamel and dentin, a human teeth-based sandwiched piezoelectric nanogenerator was fabricated, producing high and stable power outputs with an open-circuit voltage of approximately 0.9 V under an external force at 60 N. Furthermore, the high mechanical durability of the piezoelectric nanogenerator was also verified after 1600 pressing-and-releasing cycles without noticeable output degradation. Notably, for the first time, a light-emitting diode (LED) was illuminated by the human teeth-based piezoelectric device. This work exemplifies a sustainable strategy to recycle the extracted human teeth by fabricating a piezoelectric nanogenerator for energy harvesting, providing inspiration for converting waste into wealth toward green energy in bionanotechnology.

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回收人类牙齿用于压电能量采集
在人体中,从微观的生物分子构件到宏观的组织和器官,非中心对称的生物结构都表现出压电效应。然而,利用废弃的天然组织和器官制造压电器件用于能量收集应用的情况还很少见。在这里,拔出的人类牙齿被回收利用,作为压电纳米发电机的活性层用于发电。由于珐琅质和牙本质的压电效应,基于人类牙齿的夹层压电纳米发电机被制造出来,在 60 N 的外力作用下产生高且稳定的功率输出,开路电压约为 0.9 V。值得注意的是,基于人类牙齿的压电装置首次点亮了发光二极管(LED)。这项工作体现了一种可持续的策略,即通过制造用于能量收集的压电纳米发电机来回收利用拔出的人类牙齿,为仿生技术中的绿色能源提供了变废为宝的灵感。
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来源期刊
GIANT
GIANT Multiple-
CiteScore
8.50
自引率
8.60%
发文量
46
审稿时长
42 days
期刊介绍: Giant is an interdisciplinary title focusing on fundamental and applied macromolecular science spanning all chemistry, physics, biology, and materials aspects of the field in the broadest sense. Key areas covered include macromolecular chemistry, supramolecular assembly, multiscale and multifunctional materials, organic-inorganic hybrid materials, biophysics, biomimetics and surface science. Core topics range from developments in synthesis, characterisation and assembly towards creating uniformly sized precision macromolecules with tailored properties, to the design and assembly of nanostructured materials in multiple dimensions, and further to the study of smart or living designer materials with tuneable multiscale properties.
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