Strategy to enhance entropy of random numbers in a wind-driven triboelectric random number generator

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The wind-driven triboelectric nanogenerator (W-TENG) is a promising candidate for energy harvesting because wind itself is a clean, ubiquitous and unexhausted energy source. A wind flow induces unpredictable chaotic outputs from the W-TENG, which are applicable to a random number generator (RNG) for cryptographic applications due to its inherent turbulent nature. Thus, the W-TENG with a two-in-one structure can simultaneously generate both power and true random numbers. The randomness of the generated random numbers from the W-TENG is improved by a structural change from a quadruple-clamped flip-flop membrane to a double-clamped flip-flop membrane. From a power generation point of view, the quadruple-clamped W-TENG is preferred. However, as far as randomness is concerned, the double-clamped W-TENG is more attractive. Thus, an end user can customize the amount of power generation and the quality of random numbers according to a target application. Here, we also evaluate the robustness of the randomness to environmental effects, such as humidity and temperature. By harvesting energy and producing true random numbers, the W-TENG can contribute to securing and self-powering a microsystem for IoT applications.
Publisher
ELSEVIER
Issue Date
2021-11
Language
English
Article Type
Article
Citation

NANO ENERGY, v.89, pp.106359

ISSN
2211-2855
DOI
10.1016/j.nanoen.2021.106359
URI
http://hdl.handle.net/10203/287700
Appears in Collection
EE-Journal Papers(저널논문)
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