Logarithmic Helical Design for Reversed Magnetic Field in Magnetoelastic Soft Matters with Giant Current Outputs
Abstract Magnetoelastic soft materials are widely used in soft bioelectronics. However, mechanical deformation usually induces minimal changes in magnetic flux, limiting electrical outputs. To overcome this limitation, a two‐step process is employed to enhance the variation in magnetic flux density...
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Wiley
2025-07-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202505157 |
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| author | Xiaojun Chen Farid Manshaii Dianyu Tang Yizhuo Xu Zhuofan Li Manhui Chen Peng Chen Yike Li Shanfei Zhang Lei Yang Jun Chen Bin Su |
| author_facet | Xiaojun Chen Farid Manshaii Dianyu Tang Yizhuo Xu Zhuofan Li Manhui Chen Peng Chen Yike Li Shanfei Zhang Lei Yang Jun Chen Bin Su |
| author_sort | Xiaojun Chen |
| collection | DOAJ |
| description | Abstract Magnetoelastic soft materials are widely used in soft bioelectronics. However, mechanical deformation usually induces minimal changes in magnetic flux, limiting electrical outputs. To overcome this limitation, a two‐step process is employed to enhance the variation in magnetic flux density under mechanical force. On one hand, the helical structural design enables the magnetic membrane to flip completely, reversing the magnetic field. On the other hand, the applied mechanical force induces strain within the magnetoelastic membrane, leading to variations in magnetic flux density. A complete 180° reversal of the magnetic field is achieved using a logarithmic helical structure, resulting in a 200% increase in magnetic flux variation and a peak current of 6.34 mA. Following structural optimization, the current density reached an impressive 7.17 mA cm−2. Using this rationally designed logarithmic helix model, a knee pad is developed for wearable energy harvesting from human body movement. The device can generate a current of up to 2.83 mA, providing sufficient power for various small electronics, including smartphones, LED lights, headlamps, and rechargeable batteries. This achievement represents a significant milestone in advancing high‐performance wearable biomechanical energy harvesting. |
| format | Article |
| id | doaj-art-d3acf920d49a48858e25ddefca7cff53 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-d3acf920d49a48858e25ddefca7cff532025-08-20T03:51:43ZengWileyAdvanced Science2198-38442025-07-011228n/an/a10.1002/advs.202505157Logarithmic Helical Design for Reversed Magnetic Field in Magnetoelastic Soft Matters with Giant Current OutputsXiaojun Chen0Farid Manshaii1Dianyu Tang2Yizhuo Xu3Zhuofan Li4Manhui Chen5Peng Chen6Yike Li7Shanfei Zhang8Lei Yang9Jun Chen10Bin Su11State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 People's Republic of ChinaDepartment of Bioengineering University of California Los Angeles CA 90095 USASchool of Transportation and Logistics Engineering Wuhan University of Technology Wuhan Hubei 430063 People's Republic of ChinaState Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 People's Republic of ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan Hubei 430074 People's Republic of ChinaState Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 People's Republic of ChinaState Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 People's Republic of ChinaState Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 People's Republic of ChinaState Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 People's Republic of ChinaState Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 People's Republic of ChinaDepartment of Bioengineering University of California Los Angeles CA 90095 USAState Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 People's Republic of ChinaAbstract Magnetoelastic soft materials are widely used in soft bioelectronics. However, mechanical deformation usually induces minimal changes in magnetic flux, limiting electrical outputs. To overcome this limitation, a two‐step process is employed to enhance the variation in magnetic flux density under mechanical force. On one hand, the helical structural design enables the magnetic membrane to flip completely, reversing the magnetic field. On the other hand, the applied mechanical force induces strain within the magnetoelastic membrane, leading to variations in magnetic flux density. A complete 180° reversal of the magnetic field is achieved using a logarithmic helical structure, resulting in a 200% increase in magnetic flux variation and a peak current of 6.34 mA. Following structural optimization, the current density reached an impressive 7.17 mA cm−2. Using this rationally designed logarithmic helix model, a knee pad is developed for wearable energy harvesting from human body movement. The device can generate a current of up to 2.83 mA, providing sufficient power for various small electronics, including smartphones, LED lights, headlamps, and rechargeable batteries. This achievement represents a significant milestone in advancing high‐performance wearable biomechanical energy harvesting.https://doi.org/10.1002/advs.202505157energy harvestinghelical structuremagnetic field variationmagnetoelasticitywearable knee pad |
| spellingShingle | Xiaojun Chen Farid Manshaii Dianyu Tang Yizhuo Xu Zhuofan Li Manhui Chen Peng Chen Yike Li Shanfei Zhang Lei Yang Jun Chen Bin Su Logarithmic Helical Design for Reversed Magnetic Field in Magnetoelastic Soft Matters with Giant Current Outputs Advanced Science energy harvesting helical structure magnetic field variation magnetoelasticity wearable knee pad |
| title | Logarithmic Helical Design for Reversed Magnetic Field in Magnetoelastic Soft Matters with Giant Current Outputs |
| title_full | Logarithmic Helical Design for Reversed Magnetic Field in Magnetoelastic Soft Matters with Giant Current Outputs |
| title_fullStr | Logarithmic Helical Design for Reversed Magnetic Field in Magnetoelastic Soft Matters with Giant Current Outputs |
| title_full_unstemmed | Logarithmic Helical Design for Reversed Magnetic Field in Magnetoelastic Soft Matters with Giant Current Outputs |
| title_short | Logarithmic Helical Design for Reversed Magnetic Field in Magnetoelastic Soft Matters with Giant Current Outputs |
| title_sort | logarithmic helical design for reversed magnetic field in magnetoelastic soft matters with giant current outputs |
| topic | energy harvesting helical structure magnetic field variation magnetoelasticity wearable knee pad |
| url | https://doi.org/10.1002/advs.202505157 |
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