Electrification of human body by walking |
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| Institution: | 1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States;2. State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China;3. Key Laboratory for Optoelectronic Technology & Systems, Ministry of Education of China, key Laboratory of Fundamental Science of Micro/Nano-Device and System Technology, Chongqing University, Chongqing 400044, China;4. Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, National Center for Nanoscience and Technology (NCNST), Beijing 100083, China;1. Department of Inorganic Chemistry (Materials Chemistry), University of Vienna, 1090 Wien, Austria;2. Dipartimento di Chimica e Chimica Industriale, Università di Genova, 16146 Genova, Italy;1. Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland;2. Department of Molecular and Cellular Physiology, Stanford University, Stanford, CA 94305, USA;1. CEA Saclay - DSM/Irfu/SEDI 91191 Gif Sur Yvette, France;2. Physics Dept., University of Athens, Greece;3. Heron Tech., Orleans, France;4. JINR, Joliot-Curie 6, 141980 Dubna, Russia;5. Irish Precision Optics, Cork 22 Summerhill North, Ireland;6. European Centre for Soft Computing, Gonzalo Gutiérrez Quirós, 33600 Mieres (Asturias), Spain;7. Inspiralia Tecnologías Avanzadas, Estrada 10, 28034 Madrid, Spain;1. Key Laboratory of Terahertz Solid-State Technology, CAS, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai, 200050, China;2. State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai, 200050, China;3. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yutian Road, Shanghai, 200083, China;4. School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China;5. University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China;6. Department of Microtechnology and Nanoscience, Chalmers University of Technology, Gothenburg, 41296, Sweden;1. Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, PR China;2. CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, PR China;3. University of Chinese Academy of Sciences, Beijing 100049, PR China;4. School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, PR China;5. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, United States |
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| Abstract: | The process of electrification of the human body by walking on resistive floors has been analysed and the corresponding body potential measured. A model for electric body potential caused by walking has been proposed and then verified experimentally. The model combines two main processes: an exponential increase of potential due to successive charging and potential oscillations caused by periodic changes of body capacitance during walking. The conditions for initiation of Paschen's microdischarges running in the gaps between floor and soles of walker's footwear have been specified and a corresponding relation for minimum saturated body potential causing Paschen's discharges has been derived. This saturated critical potential has been found to be much higher than that usually attained by walking on common floors which explains why the Paschen discharges did not appear in such air gaps. On the other hand, the microdischarges developed between uncovered parts of the human body and grounded metallic objects have been found to be likely even with common floor and sole materials. |
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