4.8 Article

Novel insights from the ultra-thin film, strain-modulated dynamic triboelectric characterizations

期刊

NANO ENERGY
卷 80, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.nanoen.2020.105560

关键词

Dynamic strained tribo-characterizations; Triboelectric series scale; Charge transfer; Aluminum oxide; Ultra-thin film

资金

  1. National Key Research and Development Program of China [2018YFC0810200, 2018YFB2002500]
  2. National Natural Science Foundation of China [NSFC 21703204, 61974037]
  3. NSFC-Zhejiang Joint Fund for the Integration of Industrialization and Information [U1909212]
  4. Zhejiang Province Key RD Programs [2018C01037, 2020C03039, 2018C01048]
  5. Zhejiang Lab [2018EB0ZX01]
  6. Zhejiang University Micro-nano Fabrication Center

向作者/读者索取更多资源

Recent developments in contact electrification and triboelectricity have led to a new understanding of the dynamic nature of materials under strain, complicating the traditional static triboelectric series scale. This research proposes a self-powered nanoscale thickness monitoring system using advanced techniques to study the intricate mechanisms of charge transfer during contact electrifications.
Contact electrification has been a debatable topic in the last few years and newer theories have accounted for the recent developments. In recent times, triboelectricity is proposed to be a newer alternative among the ubiquitous energy resources which makes it indispensable to understand the technique in vivid details. Here in this research work, the dynamic triboelectric nature of materials under strain was observed and studied in detail. On account of this, soft material like nylon and Teflon tends to shift their respective positions on the triboelectric series scale upon the applied strain. The detailed investigation using advanced techniques allowed us to probe and discover new quasi-equilibrium states during the contact and separation cycle of nylon when contacted with aluminum oxide. The new results obsolete the existing static triboelectric series scale for the dynamic characterizations for the nanogenerator applications. Additionally, recent charge transfer models of contact electrifications were investigated in detail to probe the intricate mechanism further. Here, in this research, a novel self-powered nanoscale thickness monitoring system application is demonstrated with a resolution of 5 nm (for ALD grown aluminum oxide films). We believe this work will help the researchers to understand the contact-electrification phenomenon in detail.

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