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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2604.09299 |
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| _version_ | 1866918438694289408 |
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| author | Sato, Takashi Takahashi, Ryo Yamagishi, Kento Someya, Takao Hashimoto, Michinao Iwase, Eiji Kawahara, Yoshihiro Kurumida, Junya Iwasaki, Wataru |
| author_facet | Sato, Takashi Takahashi, Ryo Yamagishi, Kento Someya, Takao Hashimoto, Michinao Iwase, Eiji Kawahara, Yoshihiro Kurumida, Junya Iwasaki, Wataru |
| contents | A recyclable and cuttable wireless power transfer (WPT) sheet is proposed, enabled by H-tree wiring and water-soluble channels filled with liquid metal (LM). Conventional 2D WPT systems lose their functionality when physically damaged or modified. The H-tree wiring pattern maintains the operation of the remaining coils even after the outer region of the sheet is cut away. The LM can be recovered by dissolving 3D-printed polyvinyl alcohol (PVA) channels in water. The sheet dimensions were experimentally optimized, and a Q-factor over 55 was achieved at 6.78 MHz. The sheet maintained its bending stiffness and electrical resistance during 100 bending cycles. After four dissolution-refabrication cycles, 98 percent of the LM was recovered with stable electrical properties. The WPT sheet can be integrated into everyday objects and enables long-term, continuous operation of surrounding electronic devices, contributing to IoT applications and ambient computing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_09299 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | 3D-Printing Water-Soluble Channels Filled with Liquid Metal for Recyclable and Cuttable Wireless Power Sheet Sato, Takashi Takahashi, Ryo Yamagishi, Kento Someya, Takao Hashimoto, Michinao Iwase, Eiji Kawahara, Yoshihiro Kurumida, Junya Iwasaki, Wataru Human-Computer Interaction A recyclable and cuttable wireless power transfer (WPT) sheet is proposed, enabled by H-tree wiring and water-soluble channels filled with liquid metal (LM). Conventional 2D WPT systems lose their functionality when physically damaged or modified. The H-tree wiring pattern maintains the operation of the remaining coils even after the outer region of the sheet is cut away. The LM can be recovered by dissolving 3D-printed polyvinyl alcohol (PVA) channels in water. The sheet dimensions were experimentally optimized, and a Q-factor over 55 was achieved at 6.78 MHz. The sheet maintained its bending stiffness and electrical resistance during 100 bending cycles. After four dissolution-refabrication cycles, 98 percent of the LM was recovered with stable electrical properties. The WPT sheet can be integrated into everyday objects and enables long-term, continuous operation of surrounding electronic devices, contributing to IoT applications and ambient computing. |
| title | 3D-Printing Water-Soluble Channels Filled with Liquid Metal for Recyclable and Cuttable Wireless Power Sheet |
| topic | Human-Computer Interaction |
| url | https://arxiv.org/abs/2604.09299 |