Title：Characterization of Patterned Self-Assembled Electrets for Vibrational Energy HarvestersJournal：IEEE Transactions on Dielectrics and Electrical Insulation (TDEI)Authors：Yuya Tanaka, Ryu Kumagai, Ayato Jingu, Suzaku Kimura, Syuuma Kawamura, Yuji Takata, Takaaki Suzuki, and Daisuke YamaneDOI: https://doi.org/10.1109/TDEI.2026.3681253 We experimentally elucidated the relationship between surface potential and generated current in micro-patterned self-assembled electrets and provided design guidelines for vibration energy harvesters.This […]

Title：Protection layer-assisted cross-sectional observation method for micro-processed polymer optical fibersJournal：JSME Mechanical Engineering Journal, Recent Advances in Micro-Nano Science and Technology on Micromachines 2024 (MEJ:MN), Vol. ●●, No. ●●, pp. ●●-●● (Accepted: April 17, 2025) Advance online publication: June 01, 2025.Authors：Ryo Nakashima, Takuto Nakanishi, Keito Ishida, Cheng-Yao Lo, Heeyoung Lee, Yosuke Mizuno, and Daisuke YamaneDOI: https://doi.org/10.1299/mej.25-00043 We proposed […]

Title：Radial Stress Distribution in Micro Dry-Etched Perfluorinated Polymer Optical FibersJournal：IEEJ Transactions on Electrical and Electronic Engineering E (Sensors and Micromachines), Vol. 20, No. 7, pp. ●●-●●, 2025 (Accepted: Nov. 26, 2024, online published: Jan. 21, 2025).Authors：Takuto Nakanishi, Ryo Nakashima, Keito Ishida, Yuji Wada, Cheng-Yao Lo, Kentaro Nakamura, Heeyoung Lee, Yosuke Mizuno, and Daisuke YamaneDOI: https://doi.org/10.1002/tee.24257 Stress […]

Title：Multimode interference-based strain sensing using micro dry-etched perfluorinated polymer optical fibersJournal：Japanese Journal of Applied Physics, Vol. ●, No. ●, pp. ●●-●●, 202● (Accepted: Jan. 14, 2024, Available online 15 Jan. 2024).Authors：Takuto Nakanishi, Akihito Kato, Yuji Wada, Ryo Nakashima, Chenxu Zhao, Cheng-Yao Lo, Kentaro Nakamura, Heeyoung Lee, Yosuke Mizuno, and Daisuke YamaneDOI: https://doi.org/10.35848/1347-4065/ad1e9e We have demonstrated the […]

Title：Circuit Simulator Implementation of an Equivalent Circuit Model of Self-Assembled Electret Vibrational Energy Harvesters Based on an Energy DiagramJournal：IEEJ Transactions on Electrical and Electronic Engineering E (Sensors and Micromachines), Vol. 19, No. 5, pp. ●●-●●, 202● (Accepted: Dec. 4, 2023, online published: Dec. 27, 2023).Authors：Kyosuke Tokuno, Shohei Kinoshita, Hideyuki Kayaguchi, Keisuke Kurihara, Hisao Ishii, Yuya […]

Title：Observation of Surface Potential of Micropatterned Self-assembled Electrets for MEMS Vibrational Energy HarvestersJournal：Sensors and Materials, vol. ●●, no.●(●), pp. ●●-●● (accepted May 11, 2023).Authors：Daisuke Yamane, Kosuke Kawashima, Reiki Sugimoto, Ruichen Li, Hideyuki Kayaguchi, Keisuke Kurihara, Hisao Ishii, and Yuya TanakaDOI: ●● We have successfully measured and evaluated the surface potential and shape of micropatterned self-assembled electrets. […]

Title：Demonstration of Non-Contact Out-of-Plane Vibration Energy Harvesting using an Electric-Double-Layer ElectretJournal：IEEJ Transactions on Electrical and Electronic Engineering, vol. ●●, no.●●, pp. ●●-●● (Accepted, 17 Jan, 2023; Scheduled to be published in July 2023).Authors：Keigo Nota, Kentaro Tamura, Kazumoto Miwa, Shimpei Ono, and Daisuke YamaneDOI: ●●●● Research results on non-contact environmental vibration energy harvesting technology using electric double-layer […]

Title：Contactless Electrostatic Vibration Energy Harvesting using Electric Double Layer ElectretsJournal：Sensors and Materials, vol. 34, no.5(3), pp. 1869-1877, May 24, 2022.Authors：Daisuke Yamane, Kentaro Tamura, Keigo Nota, Ryuta Iwakawa, Cheng-Yao Lo, Kazumoto Miwa, and Shimpei OnoDOI: https://doi.org/10.18494/SAM3945 First demonstration of a non-contact vibration energy harvester using electric double-layer electrets. This is the result of joint research with Ritsumeikan […]

Title：Bandwidth Broadening of MEMS Vibration Energy Harvesters by Voltage-boost Rectifier CircuitJournal：Sensors and Materials, vol. 34, no.5(3), pp. 1889-1897, May 24, 2022.Authors：Yukiya Tohyama, Hiroaki Honma, Hiroshi Toshiyoshi, and Daisuke Yamane DOI: https://doi.org/10.18494/SAM.2022.3502 We have developed an electronic circuit that can expand the operating frequency bandwidth of MEMS vibration energy harvesters. This is the result of joint research […]

Title：Energy Harvesting from Non-Stationary Vibrations Using a Low-Threshold Voltage-Boost Rectifier CircuitJournal：IEEJ Transactions on Electrical and Electronic Engineering, vol.141, no.7, pp.228-232, July 2021.Authors：Y. Tohyama, H. Honma, H. Sekiya, H. Toshiyoshi, and D. Yamane, DOI: https://doi.org/10.1541/ieejsmas.141.228 The paper presents the join research results with the University of Tokyo on an electronic circuit for vibration-type energy harvesters.