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UV is a high-energy electromagnetic radiation that has been widely used in industrial production and the scientific research domain. In this work, a deep UV light emission was obtained using triboelectrification induced plasma discharge without any extra power supply. By a mechanical friction between polymer and quartz glass, the triboelectric charges cause a changing electric field, which may bring plasma discharge of low pressure gas (Ar-Hg) and give out 253.7 nm irradiation. The UV light caused by continuous friction can excite a trichromatic phosphor and afford a bright white light emission. A UV sterilization experiment shows that ~98% of Escherichia coli can be killed in 30 min by UV irradiation, which reveals that a self-powered sterilization apparatus with good sterilization effect was fabricated. This work provides a novel design to fabricate a self-powered UV light emitting device using low-frequency mechanical friction and realizes the coupling of triboelectrification and plasma luminescence, which may further expand the application of UV light in special circumstances.


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Triboelectrification induced UV emission from plasmon discharge

Show Author's information Chang Bao Han1,§Chi Zhang1,§Jingjing Tian1Xiaohui Li1Limin Zhang1Zhou Li1Zhong Lin Wang1,2( )
Beijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing100083China
School of Material Science and EngineeringGeorgia Institute of Technology, AtlantaGeorgia30332USA

§ These authors contributed equally to this work.

Abstract

UV is a high-energy electromagnetic radiation that has been widely used in industrial production and the scientific research domain. In this work, a deep UV light emission was obtained using triboelectrification induced plasma discharge without any extra power supply. By a mechanical friction between polymer and quartz glass, the triboelectric charges cause a changing electric field, which may bring plasma discharge of low pressure gas (Ar-Hg) and give out 253.7 nm irradiation. The UV light caused by continuous friction can excite a trichromatic phosphor and afford a bright white light emission. A UV sterilization experiment shows that ~98% of Escherichia coli can be killed in 30 min by UV irradiation, which reveals that a self-powered sterilization apparatus with good sterilization effect was fabricated. This work provides a novel design to fabricate a self-powered UV light emitting device using low-frequency mechanical friction and realizes the coupling of triboelectrification and plasma luminescence, which may further expand the application of UV light in special circumstances.

Keywords: light emitting, triboelectrification, UV light, plasma discharge, sterilization

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Publication history
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Acknowledgements

Publication history

Received: 20 September 2014
Revised: 01 November 2014
Accepted: 03 November 2014
Published: 03 December 2014
Issue date: January 2015

Copyright

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2014

Acknowledgements

Acknowledgements

The project is supported by the National Natural Science Foundation of China (Nos. 51475099 and 51432005), the "Thousands Talents" program for Pioneer Researchers and Innovative Teams, China, and Beijing Municipal Committee of Science and Technology (Nos. Z131100006013004 and Z131100006013005).

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