Relationship between triboelectric charge and contact force for two triboelectric layers |
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| Institution: | 1. Department of Bioengineering, University of Pittsburgh, 3700 O''Hara Street, Pittsburgh, PA 15261, USA;2. Department of Electrical & Computer Engineering, University of Pittsburgh, 3700 O''Hara Street, Pittsburgh, PA 15261, USA;3. Department of Neurosurgery, University of Pittsburgh, 200 Lothrop St, Pittsburgh, PA 15213, USA;1. Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 305–701, Republic of Korea;2. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 305–701, Republic of Korea;3. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), 291 Daehak-ro, Yuseong-gu, Daejeon, 305–701, Republic of Korea;1. Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea;2. Center for Nanotechnology, NASA Ames Research Center, Moffett Field, CA 94035, United States;1. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea;2. KAIST Institute for NanoCentury (KINC), Daejeon 34141, Republic of Korea;3. Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA;4. School of Electrical Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea;1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, China;2. School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, UK |
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| Abstract: | A relationship between triboelectric charge and contact force for two triboelectric layers is presented, by combining the theories of insulator contact charging and contact mechanics. Experimental verification has been successfully performed using contact-mode triboelectric nanogenerators (TENGs) in two cases: (a) under varying contact forces while keeping the surface roughness profile constant, and (b) under varying surface roughness profiles while keeping the contact force constant. The theory presented here can serve as an important guide in the design of triboelectric systems, particularly of a contact-mode TENG structure for specific applications and self-powered systems. |
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| Keywords: | Contact charging Contact mechanics Insulator Triboelectrification Triboelectric nanogenerators |
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