Abstract
Due to the natural characteristics of high voltage output, Triboelectric Nanogenerators (TENGs) have huge advantages in many fields. Here, we have proposed a concept of Mobile ultraviolet light sources (Mobile-UV) driven by TENG, without any additional circuits. For this system, analysis of electric characteristics, optical emission spectra, and COMSOL simulation were carried out to promote the performance. Subsequently, we have developed exploratory applications in the fields of bio-sterilization, chemical detection, and UV-curing, which proved the versatility and effectiveness. This work offers a promising, portable, effective, and safe supplement to traditional ultraviolet light sources, and will enrich the diversity of the ultraviolet application based on the reach of existing technologies.
Highlights
In many wild and poverty areas, drinking water sterilization and wound disinfection are urgent problems
More and more attention has been paid to the high voltage application of Triboelectric Nanogenerators (TENGs), because the natural high voltage characteristics of TENG have shown great ad vantages in many fields, such as generating microplasma [47,48], field emission of electrons [49], quantitatively generating the input ions in mass spectrometry [50], Electrohydrodynamic Jet Printing [51], electro-assisted cell printing [52] and so on
As a special form of freestanding triboelectric-layer mode, the operating mechanism of freestanding rotary (FR)-TENG shows in Fig. 1 (b), the rotor of FR-TENG is acrylic covered with PVC film
Summary
In many wild and poverty areas, drinking water sterilization and wound disinfection are urgent problems. There are mainly two ways to generate ultraviolet rays: One is a UV-LED lamp, it cannot meet the requirements on many occasions due to the short device life as a result of heat dissipation and immature technology Another method is to use Ar–Hg lamp to produce ultraviolet light, but the lighting excited condition requires a high voltage of above 800 V. More and more attention has been paid to the high voltage application of TENG, because the natural high voltage characteristics of TENG have shown great ad vantages in many fields, such as generating microplasma [47,48], field emission of electrons [49], quantitatively generating the input ions in mass spectrometry [50], Electrohydrodynamic Jet Printing [51], electro-assisted cell printing [52] and so on It is an ingenious and effective method to directly generate ultraviolet by TENG utilizing its high voltage characteristics. We believe that the Moblie-UV system will show tremendous innovations in the generation approaches and application scenarios of ultraviolet radiation, especially for the application of ul traviolet radiation in a large number of areas of no or poor electricity
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