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Optically Controlled Femtosecond Polariton Switch at Room Temperature

Physical Review Letters 2022年第5期129卷 057402-057402页

作者： Fei Chen Hui Li Hang Zhou Song Luo Zheng Sun Ziyu Ye Fenghao Sun Jiawei Wang Yuanlin Zheng Xianfeng Chen Huailiang Xu Hongxing Xu Tim Byrnes Zhanghai Chen Jian Wu State Key Laboratory of Precision Spectroscopy East China Normal University Shanghai 200241 China Department of Physics College of Physical Science and Technology Xiamen University Xiamen 361005 China State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China Collaborative Innovation Center of Light Manipulation and Applications Shandong Normal University Jinan 250358 China Division of Arts and Sciences New York University Shanghai 1555 Century Ave Pudong New District Shanghai 200122 China NYU-ECNU Institute of Physics at NYU Shanghai 3663 Zhongshan Road North Shanghai 200062 China Center for Quantum and Topological Systems (CQTS) NYUAD Research Institute New York University Abu Dhabi UAE Department of Physics New York University New York New York 10003 USA Wuhan National High Magnetic Field Center Wuhan 430074 China Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing Jiangsu 210093 China Collaborative Innovation Center of Extreme Optics Shanxi University Taiyuan Shanxi 030006 China CAS Center for Excellence in Ultra-intense Laser Science Shanghai 201800 China

Exciton polaritons have shown great potential for applications such as low-threshold lasing, quantum simulation, and dissipation-free circuits. In this paper, we realize a room temperature ultrafast polaritonic switch where the Bose-Einstein condensate population can be depleted at the hundred femtosecond timescale with high extinction ratios. This is achieved by applying an ultrashort optical control pulse, inducing parametric scattering within the photon part of the polariton condensate via a four-wave mixing process. Using a femtosecond angle-resolved spectroscopic imaging technique, the erasure and revival of the polariton condensates can be visualized. The condensate depletion and revival are well modeled by an open-dissipative Gross-Pitaevskii equation including parametric scattering process. This pushes the speed frontier of all-optical controlled polaritonic switches at room temperature towards the THz regime.

关键词： Exciton polariton Optoelectronics Ultrafast phenomena

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Buildup dynamics of room-temperature polariton condensation

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Physical Review B 2022年第2期106卷 L020301-L020301页

作者： Fei Chen Hang Zhou Ziyu Ye Song Luo Zheng Sun Yuanlin Zheng Xianfeng Chen Huailiang Xu Hongxing Xu Tim Byrnes Hui Li Zhanghai Chen Jian Wu State Key Laboratory of Precision Spectroscopy East China Normal University Shanghai 200241 China Department of Physics College of Physical Science and Technology Xiamen University Xiamen 361005 China State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China Collaborative Innovation Center of Light Manipulation and Applications Shandong Normal University Jinan 250358 China Division of Arts and Sciences New York University Shanghai 1555 Century Ave Pudong New District Shanghai 200122 China NYU-ECNU Institute of Physics at NYU Shanghai 3663 Zhongshan Road North Shanghai 200062 China Department of Physics New York University New York New York 10003 USA Center for Quantum and Topological Systems (CQTS) NYUAD Research Institute New York University Abu Dhabi United Arab Emirates Wuhan National High Magnetic Field Center Wuhan 430074 China Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing Jiangsu 210093 China Collaborative Innovation Center of Extreme Optics Shanxi University Taiyuan Shanxi 030006 China CAS Center for Excellence in Ultra-intense Laser Science Shanghai 201800 China

By using the femtosecond angle-resolved spectroscopic imaging technique, the ultrafast buildup dynamics of room-temperature polariton condensation is explicitly visualized in a ZnO whispering gallery mode microcavity. The buildup time of polariton condensation with respect to the arrival of the femtosecond pump pulse decreases with the increasing pump power and reaches a lower limit of about 4 ps. Simulation results by numerically solving the open-dissipative Gross-Pitaevskii equation coupled to an incoherent reservoir are in quantitative agreement with the experimental observations, showing that the scattering from exciton reservoir to the lower polariton branches and the decay from these branches dominate the buildup process.

关键词： Polaritons Transition metal oxides Time-resolved photoluminescence Ultrafast femtosecond pump probe Whispering gallery mode resonators

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Effect of Electrolytic Conditions on the Structure of Exfoliated Products of Graphite Using Sulfuric Acid and Their Ability as Hydrogen Production Electrocatalyst Supports

SSRN

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SSRN 2023年

作者： Maekawa, Ryuichi Kajiwara, Hirooki Muramatsu, Yusuke Fujita, Yuki Suzaki, Koki Nishikawa, Yasushi Kuwamura, Naoto Okura, Toshinori Nishina, Yuta Hashimoto, Hideki Hisadome, Takumi Department of Applied Chemistry School of Advanced Engineering Kogakuin University 2665-1 Nakano Hachioji Tokyo192-0015 Japan Kaneka Corporation 5-1-1 Torikainishi Settu Osaka566-0072 Japan Division of Liberal Arts Center for Promotion of Higher Education Kogakuin University 2665-1 Nakano Tokyo Hachioji192-0015 Japan Research Core for Interdisciplinary Sciences Okayama University 3-1-1 Tsushimanaka Kita-ku Okayama700-8530 Japan Graduate School of Natural Science and Technology Okayama University 3-1-1 Tsushimanaka Kita-ku Okayama700-8530 Japan

Anodic electrochemical exfoliation of graphite in a simple two-electrode configuration using inexpensive and industrially available sulfuric acid is an excellent process for the mass production of graphene oxide. In this study, the effects of the structure of the graphite sheet, voltage and current, and electrolyte concentration on the structure of the exfoliated products and their potential use as a catalyst support were investigated. The results showed that graphite structure is a factor affecting the uniformity of the electrolytic reaction, that voltage/current is an important factor that can determine whether expansion or exfoliation of the graphite anode is preferentially caused, and that electrolyte concentration is an important factor determining the atomistic structure of the exfoliated products. In addition, they showed excellent ability as catalyst supports for a molecular metal complex showing heterogeneous electrocatalytic hydrogen production. Of note is that the catalytic currents are dependent on the structure such as size, defects, and oxidation degree of exfoliated products. © 2023, The Authors. All rights reserved.

关键词： Anodes

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Circular Motion of Test Particles, Trajectories and Qpos Around the Non-Rotating Black Hole in the Background of the Symmergent Gravity

SSRN

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SSRN 2024年

作者： Maurya, Sunil Kumar Mustafa, G. Ditta, Allah Abd-Elmonem, Assmaa Alhubieshi, Neissrien Caliskan, Aylin Güdekli, Ertan Department of Mathematical and Physical Sciences College of Arts and Sciences University of Nizwa Nizwa Oman Department of Physics Zhejiang Normal University Jinhua321004 China Research Center of Astrophysics and Cosmology Khazar University AZ1096 Mehseti Street Baku41 Azerbaijan Zhejiang Institute of Photoelectronics and Zhejiang Institute for Advanced Light Source Zhejiang Normal University Zhejiang Jinhua321004 China Department of Mathematics School of Science University of Management and Technology Lahore54000 Pakistan Department of Mathematics College of Science King Khalid University Abha Saudi Arabia Graduate School of Engineering and Science Istanbul University Istanbul34134 Turkey Department of Physics Faculty of Science Istanbul University Istanbul34134 Turkey Shanghai University China COMSATS University Islamabad Pakistan

We explore the circular motion of test particles around the non-rotating black hole in the background of the Symmergent gravity, focusing on how the parameters of the underlying model influence particle motion. The black hole is fully characterized by four parameters, namely, the mass $M$ of the black hole, charge $q$ of the black hole, and two parameters $\eta$ and $\alpha$, with $\eta>1$ ($\eta © 2024, The Authors. All rights reserved.

关键词： Orbits

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Electrochemical Exfoliation of Graphite Using Aqueous Ammonium Hydrogen Carbonate Solution and the Ability of the Exfoliated Product as a Hydrogen Production Electrocatalyst Support

SSRN

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SSRN 2024年

作者： Maekawa, Ryuichi Kajiwara, Hirooki Washiyama, Yuto Nishikawa, Yasushi Kuwamura, Naoto Okura, Toshinori Nishina, Yuta Hashimoto, Hideki Applied Chemistry and Chemical Engineering Graduate School of Engineering Kogakuin University 2665-1 Nakano Hachioji Tokyo192-0015 Japan Department of Applied Chemistry School of Advanced Engineering Kogakuin University 2665-1 Nakano Hachioji Tokyo192-0015 Japan Kaneka Corporation 5-1-1 Torikainishi Osaka Settsu566-0072 Japan Division of Liberal Arts Center for Promotion of Higher Education Kogakuin University 2665-1 Nakano Hachioji Tokyo192-0015 Japan Research Core for Interdisciplinary Sciences Okayama University 3-1-1 Tsushimanaka Kita-ku Okayama700-8530 Japan Graduate School of Natural Science and Technology Okayama University 3-1-1 Tsushimanaka Kita-ku Okayama700-8530 Japan

Electrochemical exfoliation of graphite has attracted much attention as a practical mass production of two-dimensional graphene-like materials. There is an increasing desire to find new and improved methods to create unique exfoliated products with excellent functionality. We used aqueous ammonium hydrogen carbonate solution as a new electrolyte for anodic oxidative exfoliation of graphite. The exfoliated product has a porous two-dimensional structure, and it can be dispersed in water for over five years. The oxidized and defected porous surface serves as an ideal support for molecular metal complexes, effectively functioning as heterogeneous electrocatalysts for hydrogen production. © 2024, The Authors. All rights reserved.

关键词： Nanocomposites

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Emerging contaminants:A One Health perspective

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The Innovation 2024年第4期5卷 140-170,139页

作者： Fang Wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun Wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu Wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu Wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental Science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental Science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

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A consensus protocol for functional connectivity analysis in the rat brain (vol 26, pg 673, 2023)

引用

NATURE NEUROSCIENCE 2023年第6期26卷 1127-1128页

作者： Grandjean, Joanes Desrosiers-Gregoire, Gabriel Anckaerts, Cynthia Angeles-Valdez, Diego Ayad, Fadi Barriere, David A. Blockx, Ines Bortel, Aleksandra Broadwater, Margaret Cardoso, Beatriz M. Celestine, Marina Chavez-Negrete, Jorge E. Choi, Sangcheon Christiaen, Emma Clavijo, Perrin Colon-Perez, Luis Cramer, Samuel Daniele, Tolomeo Dempsey, Elaine Diao, Yujian Doelemeyer, Arno Dopfel, David Dvorakova, Lenka Falfan-Melgoza, Claudia Fernandes, Francisca F. Fowler, Caitlin F. Fuentes-Ibanez, Antonio Garin, Clement M. Gelderman, Eveline Golden, Carla E. M. Guo, Chao C. G. Henckens, Marloes J. A. G. Hennessy, Lauren A. Herman, Peter Hofwijks, Nita Horien, Corey Ionescu, Tudor M. Jones, Jolyon Kaesser, Johannes Kim, Eugene Lambers, Henriette Lazari, Alberto Lee, Sung-Ho Lillywhite, Amanda Liu, Yikang Liu, Yanyan Y. Lopez-Castro, Alejandra Lopez-Gil, Xavier Ma, Zilu MacNicol, Eilidh Madularu, Dan Mandino, Francesca Marciano, Sabina McAuslan, Matthew J. McCunn, Patrick McIntosh, Alison Meng, Xianzong Meyer-Baese, Lisa Missault, Stephan Moro, Federico Naessens, Daphne M. P. Nava-Gomez, Laura J. Nonaka, Hiroi Ortiz, Juan J. Paasonen, Jaakko Peeters, Lore M. Pereira, Mickael Perez, Pablo D. Pompilus, Marjory Prior, Malcolm Rakhmatullin, Rustam Reimann, Henning M. Reinwald, Jonathan Del Rio, Rodrigo Triana Rivera-Olvera, Alejandro Ruiz-Perez, Daniel Russo, Gabriele Rutten, Tobias J. Ryoke, Rie Sack, Markus Salvan, Piergiorgio Sanganahalli, Basavaraju G. Schroeter, Aileen Seewoo, Bhedita J. Selingue, Erwan Seuwen, Aline Shi, Bowen Sirmpilatze, Nikoloz Smith, Joanna A. B. Smith, Corrie Sobczak, Filip Stenroos, Petteri J. Straathof, Milou Strobelt, Sandra Sumiyoshi, Akira Takahashi, Kengo Torres-Garcia, Maria E. Tudela, Raul van den Berg, Monica van der Marel, Kajo van Hout, Aran T. B. Vertullo, Roberta Vidal, Benjamin Vrooman, Roel M. Wang, Victora X. Wank, Isabel Watson, David J. G. Yin, Ting Zhang, Yongzhi Zurbruegg, Stefan Achard, Sophie Alcauter, Sarael Auer, Dorothee P. Barbier, Emmanuel L. Baudewig, Juergen Beckmann, Chri Donders Institute for Brain Behaviour and Cognition Radboud University Nijmegen The Netherlands Department for Medical Imaging Radboud University Medical Center Nijmegen The Netherlands Cerebral Imaging Centre Douglas Mental Health University Institute Verdun QC Canada Integrated Program in Neuroscience McGill University Montreal QC Canada Bio-imaging Lab University of Antwerp Antwerp Belgium µNEURO Research Centre of Excellence University of Antwerp Antwerp Belgium Instituto de Neurobiología Universidad Nacional Autónoma de México Campus Juriquilla Querétaro Mexico Biological and Biomedical Engineering McGill University Montreal QC Canada McConnell Brain Imaging Centre McGill University Montreal QC Canada Montreal Neurological Institute McGill University Montreal QC Canada UMR INRAE/CNRS 7247 Physiologie des Comportements et de la Reproduction Physiologie de la reproduction et des comportements Centre de recherche INRAE de Nouzilly Tours France Department of Neurology and Neurosurgery McGill University Montreal QC Canada Center for Animal MRI University of North Carolina at Chapel Hill Chapel Hill NC USA Department of Neurology University of North Carolina at Chapel Hill Chapel Hill NC USA Biomedical Research Imaging Center University of North Carolina at Chapel Hill Chapel Hill NC USA Preclinical MRI Champalimaud Research Champalimaud Centre for the Unknown Lisbon Portugal Laboratoire des Maladies Neurodégénératives Molecular Imaging Research Center (MIRCen) Université Paris-Saclay Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA) CNRS Fontenay-aux-Roses France Departamento de Neurobiología Conductual y Cognitiva Instituto de Neurobiología Universidad Nacional Autónoma de México Campus Juriquilla Querétaro México Translational Neuroimaging and Neural Control Group High-Field Magnetic Resonance Max Planck Institute for Biological Cybernetics Tuebingen Germany Graduate Training Centre of Neuroscience International Max

Task-free functional connectivity in animal models provides an experimental framework to examine connectivity phenomena under controlled conditions and allows for comparisons with data modalities collected under invasive or terminal procedures. Currently, animal acquisitions are performed with varying protocols and analyses that hamper result comparison and integration. Here we introduce StandardRat, a consensus rat functional magnetic resonance imaging acquisition protocol tested across 20 centers. To develop this protocol with optimized acquisition and processing parameters, we initially aggregated 65 functional imaging datasets acquired from rats across 46 centers. We developed a reproducible pipeline for analyzing rat data acquired with diverse protocols and determined experimental and processing parameters associated with the robust detection of functional connectivity across centers. We show that the standardized protocol enhances biologically plausible functional connectivity patterns relative to previous acquisitions. The protocol and processing pipeline described here is openly shared with the neuroimaging community to promote interoperability and cooperation toward tackling the most important challenges in neuroscience.

关键词： Databases Neural circuits

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DarkSHINE Baseline Design Report Physics Prospects and Detector Technologies

arXiv

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arXiv 2024年

作者： Chen, Jing Chen, Ji-Yuan Chen, Jun-Feng Chen, Xiang Fu, Chang-Bo Guo, Jun Guo, Yi-Han Khaw, Kim Siang Li, Jia-Lin Li, Liang Li, Shu Lin, Yu-Ming Liu, Dan-Ning Liu, Kang Liu, Kun Liu, Qi-Bin Liu, Zhi Lu, Ze-Jia Lv, Meng Song, Si-Yuan Sun, Tong Tang, Jian-Nan Wan, Wei-Shi Wang, Dong Wang, Xiao-Long Wang, Yu-Feng Wang, Zhen Wang, Zi-Rui Wu, Wei-Hao Yang, Hai-Jun Yang, Lin Yang, Yong Yu, Dian Yuan, Rui Zhang, Jun-Hua Zhang, Yu-Lei Zhang, Yun-Long Zhao, Zhi-Yu Zhou, Bai-Hong Zhu, Chun-Xiang Zhu, Xu-Liang Zhu, Yi-Fan Xiang, Dao Tsung-Dao Lee Institute Shanghai Jiao Tong University Shanghai201210 China Institute of Nuclear and Particle Physics School of Physics and Astronomy Shanghai Jiao Tong University Shanghai200240 China Shanghai200240 China Center for Transformative Sciences ShanghaiTech University Shanghai201210 China Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai201210 China Center for High Energy Physics Peking University Beijing100871 China School of Electronics Information and Electrical Engineering Shanghai Jiao Tong University Shanghai200240 China Fudan University Shanghai200443 China Institute of Modern Physics Fudan University Shanghai200443 China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei230026 China Department of Modern Physics University of Science and Technology of China Hefei230026 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Science Beijing100049 China Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai201899 China University of Washington SeattleWA98195 United States Hamburg Germany College of Literature Science and the Arts University of Michigan Ann ArborMI48109-1040 United States Quantum Science Center of Guangdong-HongKong-Macao Greater Bay Area China School of Physics and Astronomy Shanghai Jiao Tong University Shanghai200240 China Zhangjiang Institute for Advanced Study Shanghai Jiao Tong University Shanghai200240 China

DarkSHINE is a newly proposed fixed-target experiment initiative to searchfor the invisible decay of Dark Photon via missing energy/momentum signatures,based on the high repetition rate electron beam to be deployed/delivered by theShanghai High repetition rate XFEL and Extreme light facility (SHINE). Thisreport elaborates the baseline design of DarkSHINE experiment by introducingthe physics goals, experimental setups, details of each sub-detector systemtechnical designs, signal and backgground modelings, expected searchsensitivities and future prospects, which mark an important step towards thefurther prototyping and technical demonstrations. Copyright © 2024, The Authors. All rights reserved.

关键词： Photons

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Cover Picture: Development of a Diethylcarbamazine Citrate-Based Electrochemical Sensor for Quick and Affordable Detection of Sulfadiazine and Uric Acid in Environmental Monitoring (ChemistrySelect 22/2024)

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ChemistrySelect 2024年第22期9卷

作者： Amit B. Teradale Shrishila N. Unki Pattan S. Ganesh Kusal K. Das Dr. Swastika N. Das PG Department of Chemistry BLDEA's S.B. Arts and K.C.P. Science College Vijayapur Karnataka 586103 India Interaction Laboratory Future Convergence Engineering Advanced Technology Research Center Korea University of Technology and Education Cheonan-si Chungcheongnam-do 31253 Republic of Korea. Laboratory of Vascular Physiology & Medicine Department of Physiology Shri B.M.Patil Medical College Hospital & Research Centre Director - Center for Advanced Medical Research BLDE (Deemed to be University) Vijayapura 586103 Karnataka India. Department of Chemistry BLDEA's V. P. Dr. P. G. Halakatti College of Engineering and Technology Vijayapur 586103 Karnataka India

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Dynamic Assistance for Human Balancing with Inertia of a Wearable Robotic Appendage

Dynamic Assistance for Human Balancing with Inertia of a Wea...

引用

2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)

作者： Azumi Maekawa Kei Kawamura Masahiko Inami Graduate School of Engineering the University of Tokyo Tokyo Japan Graduate School of Arts and Sciences the University of Tokyo Tokyo Japan Research Center for Advanced Science and Technology the University of Tokyo Meguro-ku Tokyo Japan

ISBN: (数字)9781728162126

ISBN: (纸本)9781728162133

A reduced balance ability can lead to falls and critical injuries. To prevent falls, humans use reaction forces and torques generated by swinging their arms. In animals, we can find that a similar strategy is taken using tails. Inspired by these strategies, we propose an approach that utilizes a robotic appendage as a human balance supporter without assistance from environmental contact. As a proof of concept, we developed a wearable robotic appendage that has one actuated degree of freedom and rotates around the sagittal axis of the wearer. To validate the feasibility of our proposed approach, we conducted an evaluation experiment with human subjects. Controlling the robotic appendage we developed improved the subjects' balance ability and enabled the subject to withstand up to 22.8 % larger impulse disturbances on average than in the fixed appendage condition.

关键词： Animals Intelligent robots Injuries

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