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Nano energy v.31, 2017년, pp.233 - 238   SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Ferrofluid-based triboelectric-electromagnetic hybrid generator for sensitive and sustainable vibration energy harvesting

Seol, Myeong-Lok (School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea ) ; Jeon, Seung-Bae (School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea ) ; Han, Jin-Woo (Center for Nanotechnology, NASA Ames Research Center, Moffett Field, CA 94035, United States ) ; Choi, Yang-Kyu (School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea ) ;
  • 초록  

    Abstract A vibration energy harvester that utilizes a liquid medium has been the subject of active research recently given its advantages of shape adaptability, scalability, and durability. In this work, a ferrofluid-based vibration energy harvester with a hybrid triboelectric-electromagnetic operating mechanism is proposed for the first time. The ferrofluid suspension solution is made with water and magnetic nanoparticles. Electrostatic induction between the polymer sidewall and the solvent water activates a triboelectric generator component, while electromagnetic induction between the suspended magnetic nanoparticles and an outer coil activates the electromagnetic generator component. Experimental results for the ferrofluid-embedded hybrid energy harvester showed an extremely low threshold amplitude and a wide operating frequency range, both of which can be particularly advantageous for harvesting subtle and irregular vibrations. Highlights A ferrofluid-based vibration energy harvester with triboelectric-electrostatic hybrid mechanism is introduced. The proposed device presents high responsivity to small vibration amplitudes, practical frequency bandwidth, high versatility for various mechanical inputs, and high operation durability. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Energy harvesting .   Ferrofluid .   Magnetic fluid .   Triboelectric nanogenerator .   Electromagnetic generator.  

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