@article{08354053a2c249de83031f8bc9ee2bc4,
title = "Autonomous Resonance-Tuning Mechanism for Environmental Adaptive Energy Harvesting",
abstract = "An innovative autonomous resonance-tuning (ART) energy harvester is reported that utilizes adaptive clamping systems driven by intrinsic mechanical mechanisms without outsourcing additional energy. The adaptive clamping system modulates the natural frequency of the harvester's main beam (MB) by adjusting the clamping position of the MB. The pulling force induced by the resonance vibration of the tuning beam (TB) provides the driving force for operating the adaptive clamp. The ART mechanism is possible by matching the natural frequencies of the TB and clamped MB. Detailed evaluations are conducted on the optimization of the adaptive clamp tolerance and TB design to increase the pulling force. The energy harvester exhibits an ultrawide resonance bandwidth of over 30 Hz in the commonly accessible low vibration frequency range (<100 Hz) owing to the ART function. The practical feasibility is demonstrated by evaluating the ART performance under both frequency and acceleration-variant conditions and powering a location tracking sensor.",
keywords = "adaptive clamps, autonomous resonance-tuning, energy harvesting, piezoelectric, tuning beam",
author = "Lee, {Dong Gyu} and Joonchul Shin and Kim, {Hyun Soo} and Sunghoon Hur and Shuailing Sun and Jang, {Ji Soo} and Sangmi Chang and Inki Jung and Sahn Nahm and Heemin Kang and Chong-Yun Kang and Sangtae Kim and Baik, {Jeong Min} and Yoo, {Il Ryeol} and Cho, {Kyung Hoon} and Song, {Hyun Cheol}",
note = "Funding Information: D.‐G.L. and J.S. contributed equally to this work. Development Project (KETEP) grant funded by the Ministry of Trade, Industry and Energy, Republic of Korea (Development of wideband piezoelectric energy harvesting for standalone low‐power smart sensor, Project No. 2018201010636A), the National Research Council of Science & Technology (NST) grant by the Korean government (MSIP) (No. CAP‐17‐04‐KRISS), and the Korea Institute of Science and Technology (2V09113, 2E30410). H.‐C.S., H.S.K., and D.‐G.L would like to acknowledge the support from the National R&D Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF‐2021R1C1C1009100, NRF‐2020M3H4A3105594). I.‐R.Y. and K.‐H.C. acknowledges the support from the National Research Foundation (NRF) of Korea funded by the Ministry of Education (NRF‐2019R1I1A3A01058105, NRF‐2018R1A6A1A03025761) and the Ministry of Science and ICT (Grand Information Technology Research Center support program) (IITP‐2022‐2020‐0‐01612). S. S. acknowledges support from the National Natural Science Foundation of China (Grant No. 52275122) and China Scholarship Council (File No. 202106250074). Publisher Copyright: {\textcopyright} 2022 The Authors. Advanced Science published by Wiley-VCH GmbH.",
year = "2023",
month = jan,
day = "25",
doi = "10.1002/advs.202205179",
language = "English",
volume = "10",
journal = "Advanced Science",
issn = "2198-3844",
publisher = "Wiley-VCH Verlag",
number = "3",
}