2026
IEEE Robotics and Automation Letters (RA-L) 2025
Ryo Takahashi｜高橋 亮
Project Assistant Professor, Graduate School of Engineering, The University of Tokyo
Toward whole-body wearables that need no battery and no wire ― for a safe and comfortable life in what we wear, even in extreme environments ―
Toward a safe and comfortable life in what we wear, even in extreme environments.I turn clothing itself into a wireless power and data line, so that wearable computing can cover the whole body without batteries to replace or wires to route.I received my PhD in Engineering from the University of Tokyo in 2023, advised by Prof. Yoshihiro Kawahara. In 2022 I interned at Meta Reality Labs, advised by Prof. Hrvoje Benko and Dr. Eric Whitmire. I have received Best Paper Awards as a first author at both ACM CHI and IEEE RA-L, as well as the ACM UbiComp Gaetano Borriello Outstanding Student Award. I currently lead a JST PRESTO project on motion-robust body-scale distributed skin intelligence networks, and serve as a co-PI of the JST CRONOS project on full-body wireless power and data networking.
Please reach out by email for collaborations, press enquiries, or invited talks.
takahashi@akg.t.u-tokyo.ac.jp
News
Research
E-textiles and body data infrastructure
Meander coils knitted across a whole garment deliver watt-level power and data anywhere on the body while staying safe to wear. Liquid-metal wiring and machine knitting make the fabric washable and stretchable.
22 related publications
- Friction-Based Interconnection of Stretchable Liquid Metal-Based Coil with Rigid Capacitors for Mechanically Durable Wireless Powering Textiles
- Knittable electronic textiles for intelligent soft wearables
- Near-field power and data networking via meandered e-textiles for continuous, large-scale BodyNet
Ultra-low-power wearable computing
Sensing the magnetic coupling between a ring coil and a wristband coil lets a ring work as an input device with no radio on the ring — over a month of use on a single charge.
Wire-free robotics and robot skin
Taking wires and batteries out of robots. Wireless power is built into the body of a snake robot and into the surface a wall-running camera robot drives on, so cable tangles and battery swaps no longer limit what the robot can do.
12 related publications
- Dense-Joint-Based Obstacle-Aided Locomotion with a Joint-Repositionable Snake Robot
- Joint-repositionable Inner-wireless Planar Snake Robot
- Surface Routing for Wireless Power Transfer using 2-D Relay Resonator Arrays
IoT / HCI
Wireless charging sheets that can be cut with scissors, and 3D-printed water-soluble channels filled with liquid metal — fabrication methods that let anyone reshape an electronic device.
7 related publications
- Machine-knittable, Magnetically-Plug-n-Play E-Textile Prototyping
- 3D-printing water-soluble channels filled with liquid metal for recyclable and cuttable wireless power sheet
- Plug-n-play e-knit: prototyping large-area e-textiles using machine-knitted magnetically-repositionable sensor networks
Publications
Dense-Joint-Based Obstacle-Aided Locomotion with a Joint-Repositionable Snake Robot Conference
2026 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), To appear, Pittsburgh, USA (October 2026).
@inproceedings{minomo2026densejointbased,
title = {Dense-Joint-Based Obstacle-Aided Locomotion with a Joint-Repositionable Snake Robot},
author = {K. Minomo and R. Takahashi and K. Yasui and Y. Nakashima and M. Yamamoto and A. Kanada},
booktitle = {2026 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
note = {To appear},
address = {Pittsburgh, USA},
year = {2026},
month = oct
}
Machine-knittable, Magnetically-Plug-n-Play E-Textile Prototyping Conference
2026 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), To appear, Pittsburgh, USA (October 2026).
@inproceedings{li2026machineknittable,
title = {Machine-knittable, Magnetically-Plug-n-Play E-Textile Prototyping},
author = {Y. Li and R. Takahashi and W. Yukita and I. Wicaksono and K. Matsutani and Y. Iwamoto and S. Lee and T. Yokota and T. Someya and Y. Kawahara},
booktitle = {2026 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
note = {To appear},
address = {Pittsburgh, USA},
year = {2026},
month = oct
}
picoRing dual: ultralow-power bimanual ring controllers for everyday AR Conference
Proceedings of the 2026 ACM International Symposium on Wearable Computers (ISWC '26), To appear (October 2026).
@inproceedings{yamamoto2026picoring,
title = {picoRing dual: ultralow-power bimanual ring controllers for everyday AR},
author = {H. Yamamoto and Y. Li and Y. Kawahara and R. Takahashi},
booktitle = {Proceedings of the 2026 ACM International Symposium on Wearable Computers (ISWC '26)},
note = {To appear},
year = {2026},
month = oct
}Collisionless Multi-Tag NFC Sensing for Indoor Activity Recognition Using Meander E-Textiles Workshop
Proc. of ACM UbiComp 2026, Intelligent Soft Wearables Workshop, Shanghai, China (October 2026).
@inproceedings{ido2026collisionless,
title = {Collisionless Multi-Tag NFC Sensing for Indoor Activity Recognition Using Meander E-Textiles},
author = {S. Ido and K. Tanaka and R. Maeda and R. Takahashi and A. Noda and S. Ishida},
booktitle = {Proc. of ACM UbiComp 2026},
note = {Intelligent Soft Wearables Workshop},
address = {Shanghai, China},
year = {2026},
month = oct
}Flexible NFC wristband for ultralow-power ring-to-wristband interaction Workshop
Proc. of ACM UbiComp 2026, Intelligent Soft Wearables Workshop, Shanghai, China (October 2026).
@inproceedings{yamamoto2026flexible,
title = {Flexible NFC wristband for ultralow-power ring-to-wristband interaction},
author = {H. Yamamoto and Y. Li and Y. Kawahara and R. Takahashi},
booktitle = {Proc. of ACM UbiComp 2026},
note = {Intelligent Soft Wearables Workshop},
address = {Shanghai, China},
year = {2026},
month = oct
}Intelligent Soft Wearables: Bridging Disciplines Towards Soft Wearables for Everyone, Everywhere Workshop
Proc. of ACM UbiComp 2026, To appear, Shanghai, China (October 2026).
@inproceedings{honnet2026intelligent,
title = {Intelligent Soft Wearables: Bridging Disciplines Towards Soft Wearables for Everyone, Everywhere},
author = {C. Honnet and T. C. Yu and R. Takahashi and T. Cheng and C. Zhang and Y. Kawahara and Y. Luo and I. Wicaksono and J. Paradiso},
booktitle = {Proc. of ACM UbiComp 2026},
note = {To appear},
address = {Shanghai, China},
year = {2026},
month = oct
}
Friction-Based Interconnection of Stretchable Liquid Metal-Based Coil with Rigid Capacitors for Mechanically Durable Wireless Powering Textiles Journal
ACS Applied Materials & Interfaces, Vol. 18, No. 37, pp. 51721-51730 (September 2026).
@article{Sato_2026,
title={Friction-Based Interconnection of Stretchable Liquid Metal-Based Coil with Rigid Capacitors for Mechanically Durable Wireless Powering Textiles},
volume={18},
ISSN={1944-8252},
url={http://dx.doi.org/10.1021/acsami.6c06181},
DOI={10.1021/acsami.6c06181},
number={37},
journal={ACS Applied Materials \& Interfaces},
publisher={American Chemical Society (ACS)},
author={Sato, Takashi and Takahashi, Ryo and Watanabe, Shinto and Yukita, Wakako and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro and Iwase, Eiji and Iwasaki, Wataru},
year={2026},
month=Sept,
pages={51721–51730}
}
Ultra-Low-Power Wireless Ring Mouse Journal
Electronics and Communications in Japan, 146(7), pp.186-192 (August 2026).
@article{Takahashi_2026,
title={Ultra‐Low‐Power Wireless Ring Mouse},
volume={109},
ISSN={1942-9541},
url={http://dx.doi.org/10.1002/ecj.70049},
DOI={10.1002/ecj.70049},
number={3},
journal={Electronics and Communications in Japan},
publisher={Wiley},
author={Takahashi, Ryo and Yifan, Li and Fukumoto, Masaaki and Noda, Akihito and Ishida, Shigemi and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro},
year={2026},
month=Aug,
pages={88–93}
}無線で給電・通信ができる衣服を実現 多彩なウエアラブルデバイス活用に道 Article
JSTnews, 8月号 (August 2026).
@article{高橋2026x,
title = {無線で給電・通信ができる衣服を実現 多彩なウエアラブルデバイス活用に道},
author = {高橋亮},
journal = {JSTnews},
note = {8月号},
year = {2026},
month = aug
}Knittable electronic textiles for intelligent soft wearables Journal
npj Flex Electron, Published online (July 2026).
@article{Takahashi_2026,
title={Knittable electronic textiles for intelligent soft wearables},
ISSN={2397-4621},
url={http://dx.doi.org/10.1038/s41528-026-00611-y},
DOI={10.1038/s41528-026-00611-y},
journal={npj Flexible Electronics},
publisher={Springer Science and Business Media LLC},
author={Takahashi, Ryo and Chen, Hsin Huei and Mao, Hongyu and Yukita, Wakako and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro and Luo, Yiyue and Wicaksono, Irmandy},
year={2026},
month=July
}Dense-Joint-Based Obstacle-Aided Locomotion with a Joint-Repositionable Snake Robot Conference
2026 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), To appear, Pittsburgh, USA (October 2026).
@inproceedings{minomo2026densejointbased,
title = {Dense-Joint-Based Obstacle-Aided Locomotion with a Joint-Repositionable Snake Robot},
author = {K. Minomo and R. Takahashi and K. Yasui and Y. Nakashima and M. Yamamoto and A. Kanada},
booktitle = {2026 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
note = {To appear},
address = {Pittsburgh, USA},
year = {2026},
month = oct
}Machine-knittable, Magnetically-Plug-n-Play E-Textile Prototyping Conference
2026 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), To appear, Pittsburgh, USA (October 2026).
@inproceedings{li2026machineknittable,
title = {Machine-knittable, Magnetically-Plug-n-Play E-Textile Prototyping},
author = {Y. Li and R. Takahashi and W. Yukita and I. Wicaksono and K. Matsutani and Y. Iwamoto and S. Lee and T. Yokota and T. Someya and Y. Kawahara},
booktitle = {2026 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
note = {To appear},
address = {Pittsburgh, USA},
year = {2026},
month = oct
}picoRing dual: ultralow-power bimanual ring controllers for everyday AR Conference
Proceedings of the 2026 ACM International Symposium on Wearable Computers (ISWC '26), To appear (October 2026).
@inproceedings{yamamoto2026picoring,
title = {picoRing dual: ultralow-power bimanual ring controllers for everyday AR},
author = {H. Yamamoto and Y. Li and Y. Kawahara and R. Takahashi},
booktitle = {Proceedings of the 2026 ACM International Symposium on Wearable Computers (ISWC '26)},
note = {To appear},
year = {2026},
month = oct
}Friction-Based Interconnection of Stretchable Liquid Metal-Based Coil with Rigid Capacitors for Mechanically Durable Wireless Powering Textiles Journal
ACS Applied Materials & Interfaces, Vol. 18, No. 37, pp. 51721-51730 (September 2026).
@article{Sato_2026,
title={Friction-Based Interconnection of Stretchable Liquid Metal-Based Coil with Rigid Capacitors for Mechanically Durable Wireless Powering Textiles},
volume={18},
ISSN={1944-8252},
url={http://dx.doi.org/10.1021/acsami.6c06181},
DOI={10.1021/acsami.6c06181},
number={37},
journal={ACS Applied Materials \& Interfaces},
publisher={American Chemical Society (ACS)},
author={Sato, Takashi and Takahashi, Ryo and Watanabe, Shinto and Yukita, Wakako and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro and Iwase, Eiji and Iwasaki, Wataru},
year={2026},
month=Sept,
pages={51721–51730}
}Ultra-Low-Power Wireless Ring Mouse Journal
Electronics and Communications in Japan, 146(7), pp.186-192 (August 2026).
@article{Takahashi_2026,
title={Ultra‐Low‐Power Wireless Ring Mouse},
volume={109},
ISSN={1942-9541},
url={http://dx.doi.org/10.1002/ecj.70049},
DOI={10.1002/ecj.70049},
number={3},
journal={Electronics and Communications in Japan},
publisher={Wiley},
author={Takahashi, Ryo and Yifan, Li and Fukumoto, Masaaki and Noda, Akihito and Ishida, Shigemi and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro},
year={2026},
month=Aug,
pages={88–93}
}Knittable electronic textiles for intelligent soft wearables Journal
npj Flex Electron, Published online (July 2026).
@article{Takahashi_2026,
title={Knittable electronic textiles for intelligent soft wearables},
ISSN={2397-4621},
url={http://dx.doi.org/10.1038/s41528-026-00611-y},
DOI={10.1038/s41528-026-00611-y},
journal={npj Flexible Electronics},
publisher={Springer Science and Business Media LLC},
author={Takahashi, Ryo and Chen, Hsin Huei and Mao, Hongyu and Yukita, Wakako and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro and Luo, Yiyue and Wicaksono, Irmandy},
year={2026},
month=July
}picoRing mouse:極低電力な指輪型無線マウス Journal
電気論文誌E, 146巻,7号 (July 2026).
@article{Takahashi_2026,
title={Ultra-low-power Wireless Ring Mouse},
volume={146},
ISSN={1347-5525},
url={http://dx.doi.org/10.1541/ieejsmas.146.186},
DOI={10.1541/ieejsmas.146.186},
number={7},
journal={IEEJ Transactions on Sensors and Micromachines},
publisher={Institute of Electrical Engineers of Japan (IEE Japan)},
author={Takahashi, Ryo and Yifan, Li and Fukumoto, Masaaki and Noda, Akihito and Ishida, Shigemi and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro},
year={2026},
month=July,
pages={186–192}
}Near-field power and data networking via meandered e-textiles for continuous, large-scale BodyNet Journal
IEEE Pervasive Computing, in press (July 2026).
@article{Takahashi_2026,
title={Near-Field Power and Data Networking via Meandered E-Textiles for Continuous, Large-Scale BodyNet},
ISSN={1558-2590},
url={http://dx.doi.org/10.1109/MPRV.2026.3712563},
DOI={10.1109/mprv.2026.3712563},
journal={IEEE Pervasive Computing},
publisher={Institute of Electrical and Electronics Engineers (IEEE)},
author={Takahashi, Ryo and Kawahara, Yoshihiro},
year={2026},
pages={1–9}
}
3D-printing water-soluble channels filled with liquid metal for recyclable and cuttable wireless power sheet Conference
2026 IEEE 39th International Conference on Micro Electro Mechanical Systems (MEMS), VII-b-2, Salzburg, Austria (January 2026).
@inproceedings{Sato_2026,
title={3D-Printing Water-Soluble Channels Filled with Liquid Metal for Recyclable and Cuttable Wireless Power Sheet},
url={http://dx.doi.org/10.1109/mems64181.2026.11419301},
DOI={10.1109/mems64181.2026.11419301},
booktitle={2026 IEEE 39th International Conference on Micro Electro Mechanical Systems (MEMS)},
publisher={IEEE},
author={Sato, Takashi and Takahashi, Ryo and Yamagishi, Kento and Someya, Takao and Hashimoto, Michinao and Iwase, Eiji and Kawahara, Yoshihiro and Kurumida, Junya and Iwasaki, Wataru},
year={2026},
month=Jan,
pages={1–4}
}Full-body WPT: wireless powering with meandered e-textiles Conference
Companion of the 2025 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp Companion'25), pp. 529-533 (October 2025).
@inproceedings{Takahashi_2025,
title={Full-body WPT: Wireless Powering with Meandered E-textiles},
url={http://dx.doi.org/10.1145/3714394.3750714},
DOI={10.1145/3714394.3750714},
booktitle={Companion of the 2025 ACM International Joint Conference on Pervasive and Ubiquitous Computing},
publisher={ACM},
author={Takahashi, Ryo and Sato, Takashi and Yukita, Wakako and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro},
year={2025},
month=Oct,
pages={529–533}
}Friction-Based Interconnection of Stretchable Liquid Metal-Based Coil with Rigid Capacitors for Mechanically Durable Wireless Powering Textiles Journal
ACS Applied Materials & Interfaces, Vol. 18, No. 37, pp. 51721-51730 (September 2026).
@article{Sato_2026,
title={Friction-Based Interconnection of Stretchable Liquid Metal-Based Coil with Rigid Capacitors for Mechanically Durable Wireless Powering Textiles},
volume={18},
ISSN={1944-8252},
url={http://dx.doi.org/10.1021/acsami.6c06181},
DOI={10.1021/acsami.6c06181},
number={37},
journal={ACS Applied Materials \& Interfaces},
publisher={American Chemical Society (ACS)},
author={Sato, Takashi and Takahashi, Ryo and Watanabe, Shinto and Yukita, Wakako and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro and Iwase, Eiji and Iwasaki, Wataru},
year={2026},
month=Sept,
pages={51721–51730}
}Ultra-Low-Power Wireless Ring Mouse Journal
Electronics and Communications in Japan, 146(7), pp.186-192 (August 2026).
@article{Takahashi_2026,
title={Ultra‐Low‐Power Wireless Ring Mouse},
volume={109},
ISSN={1942-9541},
url={http://dx.doi.org/10.1002/ecj.70049},
DOI={10.1002/ecj.70049},
number={3},
journal={Electronics and Communications in Japan},
publisher={Wiley},
author={Takahashi, Ryo and Yifan, Li and Fukumoto, Masaaki and Noda, Akihito and Ishida, Shigemi and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro},
year={2026},
month=Aug,
pages={88–93}
}Knittable electronic textiles for intelligent soft wearables Journal
npj Flex Electron, Published online (July 2026).
@article{Takahashi_2026,
title={Knittable electronic textiles for intelligent soft wearables},
ISSN={2397-4621},
url={http://dx.doi.org/10.1038/s41528-026-00611-y},
DOI={10.1038/s41528-026-00611-y},
journal={npj Flexible Electronics},
publisher={Springer Science and Business Media LLC},
author={Takahashi, Ryo and Chen, Hsin Huei and Mao, Hongyu and Yukita, Wakako and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro and Luo, Yiyue and Wicaksono, Irmandy},
year={2026},
month=July
}picoRing mouse:極低電力な指輪型無線マウス Journal
電気論文誌E, 146巻,7号 (July 2026).
@article{Takahashi_2026,
title={Ultra-low-power Wireless Ring Mouse},
volume={146},
ISSN={1347-5525},
url={http://dx.doi.org/10.1541/ieejsmas.146.186},
DOI={10.1541/ieejsmas.146.186},
number={7},
journal={IEEJ Transactions on Sensors and Micromachines},
publisher={Institute of Electrical Engineers of Japan (IEE Japan)},
author={Takahashi, Ryo and Yifan, Li and Fukumoto, Masaaki and Noda, Akihito and Ishida, Shigemi and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro},
year={2026},
month=July,
pages={186–192}
}Near-field power and data networking via meandered e-textiles for continuous, large-scale BodyNet Journal
IEEE Pervasive Computing, in press (July 2026).
@article{Takahashi_2026,
title={Near-Field Power and Data Networking via Meandered E-Textiles for Continuous, Large-Scale BodyNet},
ISSN={1558-2590},
url={http://dx.doi.org/10.1109/MPRV.2026.3712563},
DOI={10.1109/mprv.2026.3712563},
journal={IEEE Pervasive Computing},
publisher={Institute of Electrical and Electronics Engineers (IEEE)},
author={Takahashi, Ryo and Kawahara, Yoshihiro},
year={2026},
pages={1–9}
}🏆Joint-repositionable Inner-wireless Planar Snake Robot Journal
IEEE Robotics and Automation Letters, Vol. 10, No. 5, pp. 4994-5001 (May 2025).
Best Paper Award
@article{Kanada_2025,
title={Joint-Repositionable Inner-Wireless Planar Snake Robot},
volume={10},
ISSN={2377-3774},
url={http://dx.doi.org/10.1109/LRA.2025.3555394},
DOI={10.1109/lra.2025.3555394},
number={5},
journal={IEEE Robotics and Automation Letters},
publisher={Institute of Electrical and Electronics Engineers (IEEE)},
author={Kanada, Ayato and Takahashi, Ryo and Hayashi, Keito and Hosaka, Ryusuke and Yukita, Wakako and Nakashima, Yasutaka and Yokota, Tomoyuki and Someya, Takao and Kamezaki, Mitsuhiro and Kawahara, Yoshihiro and Yamamoto, Motoji},
year={2025},
month=May,
pages={4994–5001}
}🏆Meander Coil++:継続的なウェアラブルコンピューティングのための衣類全面での安全で高効率な無線給電 Journal
コンピュータソフトウェア(サイバー増大号), Vol.40, No.3, pp. 113-122 (August 2023).
@inproceedings{高橋2022x,
title = {Meander Coil++:継続的なウェアラブルコンピューティングのための衣類全面での安全で高効率な無線給電},
author = {高橋亮 and 雪田和歌子 and 横田知之 and 染谷隆夫 and 川原圭博},
booktitle = {第30回インタラクティブシステムとソフトウェアに関するワークショップ(WISS 2022)},
pages = {pp.79-86},
address = {山形},
year = {2022},
month = dec
}
Twin Meander Coil: Sensitive Readout of Battery-free On-body Wireless Sensors Using Body-scale Meander Coils Journal
Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (ACM IMWUT), Vol.5, No.4, Article No.179 (December 2021).
@article{Takahashi_2021,
title={Twin Meander Coil: Sensitive Readout of Battery-free On-body Wireless Sensors Using Body-scale Meander Coils},
volume={5},
ISSN={2474-9567},
url={http://dx.doi.org/10.1145/3494996},
DOI={10.1145/3494996},
number={4},
journal={Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies},
publisher={Association for Computing Machinery (ACM)},
author={Takahashi, Ryo and Yukita, Wakako and Sasatani, Takuya and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro},
year={2021},
month=Dec,
pages={1–21}
}
Surface Routing for Wireless Power Transfer using 2-D Relay Resonator Arrays Journal
IEEE Access, Vol. 9, pp. 133102 - 133110 (September 2021).
@article{Morita_2021,
title={Surface Routing for Wireless Power Transfer Using 2-D Relay Resonator Arrays},
volume={9},
ISSN={2169-3536},
url={http://dx.doi.org/10.1109/ACCESS.2021.3115143},
DOI={10.1109/access.2021.3115143},
journal={IEEE Access},
publisher={Institute of Electrical and Electronics Engineers (IEEE)},
author={Morita, Masahiro and Sasatani, Takuya and Takahashi, Ryo and Kawahara, Yoshihiro},
year={2021},
pages={133102–133110}
}A Cuttable Wireless Power Transfer Sheet Journal
Proc. of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (ACM IMWUT), Vol.2, No.4, Article No. 190 (December 2018).
@article{Takahashi_2018,
title={A Cuttable Wireless Power Transfer Sheet},
volume={2},
ISSN={2474-9567},
url={http://dx.doi.org/10.1145/3287068},
DOI={10.1145/3287068},
number={4},
journal={Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies},
publisher={Association for Computing Machinery (ACM)},
author={Takahashi, Ryo and Sasatani, Takuya and Okuya, Fuminori and Narusue, Yoshiaki and Kawahara, Yoshihiro},
year={2018},
month=Dec,
pages={1–25}
}Dense-Joint-Based Obstacle-Aided Locomotion with a Joint-Repositionable Snake Robot Conference
2026 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), To appear, Pittsburgh, USA (October 2026).
@inproceedings{minomo2026densejointbased,
title = {Dense-Joint-Based Obstacle-Aided Locomotion with a Joint-Repositionable Snake Robot},
author = {K. Minomo and R. Takahashi and K. Yasui and Y. Nakashima and M. Yamamoto and A. Kanada},
booktitle = {2026 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
note = {To appear},
address = {Pittsburgh, USA},
year = {2026},
month = oct
}Machine-knittable, Magnetically-Plug-n-Play E-Textile Prototyping Conference
2026 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), To appear, Pittsburgh, USA (October 2026).
@inproceedings{li2026machineknittable,
title = {Machine-knittable, Magnetically-Plug-n-Play E-Textile Prototyping},
author = {Y. Li and R. Takahashi and W. Yukita and I. Wicaksono and K. Matsutani and Y. Iwamoto and S. Lee and T. Yokota and T. Someya and Y. Kawahara},
booktitle = {2026 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
note = {To appear},
address = {Pittsburgh, USA},
year = {2026},
month = oct
}picoRing dual: ultralow-power bimanual ring controllers for everyday AR Conference
Proceedings of the 2026 ACM International Symposium on Wearable Computers (ISWC '26), To appear (October 2026).
@inproceedings{yamamoto2026picoring,
title = {picoRing dual: ultralow-power bimanual ring controllers for everyday AR},
author = {H. Yamamoto and Y. Li and Y. Kawahara and R. Takahashi},
booktitle = {Proceedings of the 2026 ACM International Symposium on Wearable Computers (ISWC '26)},
note = {To appear},
year = {2026},
month = oct
}3D-printing water-soluble channels filled with liquid metal for recyclable and cuttable wireless power sheet Conference
2026 IEEE 39th International Conference on Micro Electro Mechanical Systems (MEMS), VII-b-2, Salzburg, Austria (January 2026).
@inproceedings{Sato_2026,
title={3D-Printing Water-Soluble Channels Filled with Liquid Metal for Recyclable and Cuttable Wireless Power Sheet},
url={http://dx.doi.org/10.1109/mems64181.2026.11419301},
DOI={10.1109/mems64181.2026.11419301},
booktitle={2026 IEEE 39th International Conference on Micro Electro Mechanical Systems (MEMS)},
publisher={IEEE},
author={Sato, Takashi and Takahashi, Ryo and Yamagishi, Kento and Someya, Takao and Hashimoto, Michinao and Iwase, Eiji and Kawahara, Yoshihiro and Kurumida, Junya and Iwasaki, Wataru},
year={2026},
month=Jan,
pages={1–4}
}Full-body WPT: wireless powering with meandered e-textiles Conference
Companion of the 2025 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp Companion'25), pp. 529-533 (October 2025).
@inproceedings{Takahashi_2025,
title={Full-body WPT: Wireless Powering with Meandered E-textiles},
url={http://dx.doi.org/10.1145/3714394.3750714},
DOI={10.1145/3714394.3750714},
booktitle={Companion of the 2025 ACM International Joint Conference on Pervasive and Ubiquitous Computing},
publisher={ACM},
author={Takahashi, Ryo and Sato, Takashi and Yukita, Wakako and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro},
year={2025},
month=Oct,
pages={529–533}
}
Ultra-low-power ring-based wireless tinymouse Conference
Proceedings of the 38th Annual ACM Symposium on User Interface Software and Technology (ACM UIST), Article 22, 1-12, Busan, Korea (October 2025).
@inproceedings{Li_2025,
series={UIST ’25},
title={Ultra-low-power ring-based wireless tinymouse},
url={http://dx.doi.org/10.1145/3746059.3747615},
DOI={10.1145/3746059.3747615},
booktitle={Proceedings of the 38th Annual ACM Symposium on User Interface Software and Technology},
publisher={ACM},
author={Li, Yifan and Fukumoto, Masaaki and Kari, Mohamed and Ishida, Shigemi and Noda, Akihito and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro and Takahashi, Ryo},
year={2025},
month=Sept,
pages={1–12},
collection={UIST ’25}
}Plug-n-play e-knit: prototyping large-area e-textiles using machine-knitted magnetically-repositionable sensor networks Conference
Proceedings of the Nineteenth International Conference on Tangible, Embedded, and Embodied Interaction (TEI '25), Article No. 56, pp. 1-7, Bordeaux, France (March 2025).
@inproceedings{Li_2025,
series={TEI ’25},
title={Plug-n-play e-knit: prototyping large-area e-textiles using machine-knitted magnetically-repositionable sensor networks},
url={http://dx.doi.org/10.1145/3689050.3705973},
DOI={10.1145/3689050.3705973},
booktitle={Proceedings of the Nineteenth International Conference on Tangible, Embedded, and Embodied Interaction},
publisher={ACM},
author={Li, Yifan and Takahashi, Ryo and Yukita, Wakako and Matsutani, Kanata and Caremel, Cedric and Iwamoto, Yuhiro and Lee, Sunghoon and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro},
year={2025},
month=Mar,
pages={1–7},
collection={TEI ’25}
}Friction Jointing of Distributed Rigid Capacitors to Stretchable Liquid Metal Coil for Full-Body Wireless Charging Clothing Conference
2025 IEEE 38th International Conference on Micro Electro Mechanical Systems (MEMS), pp. 181-184, Taiwan (January 2025).
@inproceedings{Sato_2025,
title={Friction Jointing Of Distributed Rigid Capacitors To Stretchable Liquid Metal Coil For Full-Body Wireless Charging Clothing},
url={http://dx.doi.org/10.1109/mems61431.2025.10917417},
DOI={10.1109/mems61431.2025.10917417},
booktitle={2025 IEEE 38th International Conference on Micro Electro Mechanical Systems (MEMS)},
publisher={IEEE},
author={Sato, Takashi and Watanabe, Shinto and Takahashi, Ryo and Yukita, Wakako and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro and Iwase, Eiji and Kurumida, Junya},
year={2025},
month=Jan,
pages={181–184}
}picoRing: battery-free rings for subtle thumb-to-index input Conference
Proceedings of the 37th Annual ACM Symposium on User Interface Software and Technology (UIST'24), Article No. 13, pp. 1-11, Pittsburgh, USA (October 2024).
@inproceedings{Takahashi_2024,
series={UIST ’24},
title={picoRing: battery-free rings for subtle thumb-to-index input},
url={http://dx.doi.org/10.1145/3654777.3676365},
DOI={10.1145/3654777.3676365},
booktitle={Proceedings of the 37th Annual ACM Symposium on User Interface Software and Technology},
publisher={ACM},
author={Takahashi, Ryo and Whitmire, Eric and Boldu, Roger and Ng, Shiu and Kienzle, Wolf and Benko, Hrvoje},
year={2024},
month=Oct,
pages={1–11},
collection={UIST ’24}
}🏆Meander Coil++: A Body-scale Wireless Power Transmission using Safe-to-body and Energy-efficient Transmitter Coil Conference
Proceedings of the 2022 CHI Conference on Human Factors in Computing Systems (ACM CHI'22), Article No.: 390, Pages 1-12, New Orleans, LA, USA (April 2022).
Best Paper Award
@inproceedings{Takahashi_2022,
series={CHI ’22},
title={Meander Coil++: A Body-scale Wireless Power Transmission Using Safe-to-body and Energy-efficient Transmitter Coil},
url={http://dx.doi.org/10.1145/3491102.3502119},
DOI={10.1145/3491102.3502119},
booktitle={CHI Conference on Human Factors in Computing Systems},
publisher={ACM},
author={Takahashi, Ryo and Yukita, Wakako and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro},
year={2022},
month=Apr,
pages={1–12},
collection={CHI ’22}
}Collisionless Multi-Tag NFC Sensing for Indoor Activity Recognition Using Meander E-Textiles Workshop
Proc. of ACM UbiComp 2026, Intelligent Soft Wearables Workshop, Shanghai, China (October 2026).
@inproceedings{ido2026collisionless,
title = {Collisionless Multi-Tag NFC Sensing for Indoor Activity Recognition Using Meander E-Textiles},
author = {S. Ido and K. Tanaka and R. Maeda and R. Takahashi and A. Noda and S. Ishida},
booktitle = {Proc. of ACM UbiComp 2026},
note = {Intelligent Soft Wearables Workshop},
address = {Shanghai, China},
year = {2026},
month = oct
}Flexible NFC wristband for ultralow-power ring-to-wristband interaction Workshop
Proc. of ACM UbiComp 2026, Intelligent Soft Wearables Workshop, Shanghai, China (October 2026).
@inproceedings{yamamoto2026flexible,
title = {Flexible NFC wristband for ultralow-power ring-to-wristband interaction},
author = {H. Yamamoto and Y. Li and Y. Kawahara and R. Takahashi},
booktitle = {Proc. of ACM UbiComp 2026},
note = {Intelligent Soft Wearables Workshop},
address = {Shanghai, China},
year = {2026},
month = oct
}Intelligent Soft Wearables: Bridging Disciplines Towards Soft Wearables for Everyone, Everywhere Workshop
Proc. of ACM UbiComp 2026, To appear, Shanghai, China (October 2026).
@inproceedings{honnet2026intelligent,
title = {Intelligent Soft Wearables: Bridging Disciplines Towards Soft Wearables for Everyone, Everywhere},
author = {C. Honnet and T. C. Yu and R. Takahashi and T. Cheng and C. Zhang and Y. Kawahara and Y. Luo and I. Wicaksono and J. Paradiso},
booktitle = {Proc. of ACM UbiComp 2026},
note = {To appear},
address = {Shanghai, China},
year = {2026},
month = oct
}Plug-n-play e-knit with LED-based sensor positioning Workshop
Proc. of ACM UbiComp 2025, Intelligent Soft Wearables Workshop, Espoo, Finland (October 2025).
@inproceedings{Li_2025,
title={Plug-n-play e-knit with LED-based Sensor Positioning},
url={http://dx.doi.org/10.1145/3714394.3756222},
DOI={10.1145/3714394.3756222},
booktitle={Companion of the 2025 ACM International Joint Conference on Pervasive and Ubiquitous Computing},
publisher={ACM},
author={Li, Yifan and Takahashi, Ryo and Wicaksono, Irmandy and Yukita, Wakako and Iwamoto, Yuhiro and Lee, Sunghoon and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro},
year={2025},
month=Oct,
pages={1143–1144}
}Intelligent Soft Wearables Workshop
Proc. of ACM UbiComp 2025, 1123-126, Espoo, Finland (October 2025).
@inproceedings{yu2025intelligent,
title = {Intelligent Soft Wearables},
author = {T. C. Yu and C. Honnet and T. Cheng and R. Takahashi and B. Zhou and C. Zhang and J. A. Paradiso and Y. Kawahara and P. Lukowicz and J. Hester and Y. Luo and I. Wicaksono},
booktitle = {Proc. of ACM UbiComp 2025},
note = {1123-126},
address = {Espoo, Finland},
year = {2025},
month = oct
}Body-scale NFC for wearables: human-centric body-scale NFC networking for ultra-low-power wearable devices (Demo of UTokyo Kawahara Lab 2025) Demo
Extended Abstracts of the 2026 CHI Conference on Human Factors in Computing Systems, Article No. 825, pp. 1-6, Barcelona, Spain (April 2026).
@inproceedings{Yamamoto_2026,
series={CHI EA ’26},
title={Body-scale NFC for wearables: human-centric body-scale NFC networking for ultra-low-power wearable devices (Demo of UTokyo Kawahara Lab 2025)},
url={http://dx.doi.org/10.1145/3772363.3799126},
DOI={10.1145/3772363.3799126},
booktitle={Proceedings of the Extended Abstracts of the 2026 CHI Conference on Human Factors in Computing Systems},
publisher={ACM},
author={Yamamoto, Hideaki and Li, Yifan and Yukita, Wakako and Yokota, Tomoyuki and Someya, Takao and Takahashi, Ryo and Kawahara, Yoshihiro},
year={2026},
month=Apr,
pages={1–6},
collection={CHI EA ’26}
}Ultra-low-power ring-based wireless tinymouse Demo
Proceedings of the 38th Annual ACM Symposium on User Interface Software and Technology (ACM UIST), Busan, South Korea (September 2025).
@inproceedings{Li_2025,
series={UIST ’25},
title={Ultra-low-power ring-based wireless tinymouse},
url={http://dx.doi.org/10.1145/3746059.3747615},
DOI={10.1145/3746059.3747615},
booktitle={Proceedings of the 38th Annual ACM Symposium on User Interface Software and Technology},
publisher={ACM},
author={Li, Yifan and Fukumoto, Masaaki and Kari, Mohamed and Ishida, Shigemi and Noda, Akihito and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro and Takahashi, Ryo},
year={2025},
month=Sept,
pages={1–12},
collection={UIST ’25}
}Demo of picoRing mouse: ultra-low-powered wireless mouse ring with ring-to-wristband coil-based impedance sensing Demo
Extended Abstracts of the CHI Conference on Human Factors in Computing Systems (CHI EA ’25), Article 707, pp. 1-5, Yokohama, Japan (April 2025).
@inproceedings{Li_2025,
series={CHI EA ’25},
title={Demo of picoRing mouse: ultra-low-powered wireless mouse ring with ring-to-wristband coil-based impedance sensing},
url={http://dx.doi.org/10.1145/3706599.3721183},
DOI={10.1145/3706599.3721183},
booktitle={Proceedings of the Extended Abstracts of the CHI Conference on Human Factors in Computing Systems},
publisher={ACM},
author={Li, Yifan and Fukumoto, Masaaki and Kari, Mohamed and Yokota, Tomoyuki and Someya, Takao and Kawahara, Yoshihiro and Takahashi, Ryo},
year={2025},
month=Apr,
pages={1–5},
collection={CHI EA ’25}
}🏆Body-scale wireless charging via meandered textile coil for continuous full-body electric skin Poster
The 7th event of THE YOUNG RESEARCHERS SOCIETY FOR FLEXIBLE AND STRETCHABLE ELECTRONICS, Osaka,Japan (May 2024).
FSE Best Poster Presentation Award
@inproceedings{takahashi2024bodyscale,
title = {Body-scale wireless charging via meandered textile coil for continuous full-body electric skin},
author = {R. Takahashi and T. Sato and W. Yukita and T. Yokota and T. Someya and E. Iwase and Y. Kawahara},
booktitle = {The 7th event of THE YOUNG RESEARCHERS SOCIETY FOR FLEXIBLE AND STRETCHABLE ELECTRONICS},
address = {Osaka,Japan},
year = {2024},
month = may
}Demo: Design of Cuttable Wireless Power Transfer Sheet Demo
Adjunct Proc. of ACM UbiComp 2018, pp.456-459, Singapore (October 2018).
@inproceedings{Takahashi_2018,
series={UbiComp ’18},
title={Design of Cuttable Wireless Power Transfer Sheet},
url={http://dx.doi.org/10.1145/3267305.3267570},
DOI={10.1145/3267305.3267570},
booktitle={Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers},
publisher={ACM},
author={Takahashi, Ryo and Sasatani, Takuya and Okuya, Fuminori and Narusue, Yoshiaki and Kawahara, Yoshihiro},
year={2018},
month=Oct,
pages={456–459},
collection={UbiComp ’18}
}メアンダコイル上の小型移動ロボットの走行中無線給電における給電効率を考慮した探索的経路生成手法 Domestic
ROBOMECH, 1P1-H09, 福岡 (June 2026).
@inproceedings{韓燦2026x,
title = {メアンダコイル上の小型移動ロボットの走行中無線給電における給電効率を考慮した探索的経路生成手法},
author = {韓燦教 and 高橋亮 and 横田知之 and 川原圭博},
booktitle = {ROBOMECH},
note = {1P1-H09},
address = {福岡},
year = {2026},
month = jun
}picoRing NFC: 中距離NFCを用いた極低電力なワイヤレススマートリング Domestic
ROBOMECH 2026, 2A1-R04, 福岡 (June 2026).
@inproceedings{山本2026picoring,
title = {picoRing NFC: 中距離NFCを用いた極低電力なワイヤレススマートリング},
author = {山本英昂 and 高橋亮 and 川原圭博},
booktitle = {ROBOMECH 2026},
note = {2A1-R04},
address = {福岡},
year = {2026},
month = jun
}機械編みによる人体スケールの NFC リーダ服 Domestic
ROBOMECH 2026, 2P1-O10, 福岡 (June 2026).
@inproceedings{高橋2026x,
title = {機械編みによる人体スケールの NFC リーダ服},
author = {高橋亮 and 川原圭博},
booktitle = {ROBOMECH 2026},
note = {2P1-O10},
address = {福岡},
year = {2026},
month = jun
}関節の高密度化がヘビ型ロボットの障害物利用推進に与える影響の調査 Domestic
ROBOMECH 2026, 2A1-I09, 福岡 (June 2026).
@inproceedings{蓑毛2026x,
title = {関節の高密度化がヘビ型ロボットの障害物利用推進に与える影響の調査},
author = {蓑毛響介 and 高橋亮 and 安井浩太郎 and 山本元司 and 中島康貴 and 金田礼人},
booktitle = {ROBOMECH 2026},
note = {2A1-I09},
address = {福岡},
year = {2026},
month = jun
}極低電力な指輪型無線マウス Domestic
「センサ・マイクロマシンと応用システム」シンポジウム, 第42回, 宇都宮 (November 2025).
奨励賞
@inproceedings{高橋2025x,
title = {極低電力な指輪型無線マウス},
author = {高橋亮 and Y. Li and 福本雅朗 and M. Kari and 野田聡人 and 石田繁巳 and 横田知之 and 染谷隆夫 and 川原圭博},
booktitle = {「センサ・マイクロマシンと応用システム」シンポジウム},
note = {第42回},
address = {宇都宮},
year = {2025},
month = nov
}液体金属を充填した3D印刷水溶性流路によるリサイクル可能なフレキシブル電子デバイス Domestic
第16回マイクロ・ナノ工学シンポジウム, 12P2-PN-92, 宇都宮 (November 2025).
ファイナリスト
@inproceedings{佐藤2025d,
title = {液体金属を充填した3D印刷水溶性流路によるリサイクル可能なフレキシブル電子デバイス},
author = {佐藤峻 and 高橋亮 and 山岸健人 and 染谷隆夫 and 橋本道尚 and 岩瀬英治 and 川原圭博 and 来見田淳也 and 岩﨑渉},
booktitle = {第16回マイクロ・ナノ工学シンポジウム},
note = {12P2-PN-92},
address = {宇都宮},
year = {2025},
month = nov
}指輪-リストバンドコイル間の磁気結合を用いた超低電力な指輪型無線XRコントローラの設計 Domestic
信学ソ大2025, B-15-32, 岡山 (September 2025).
@inproceedings{山本2025xr,
title = {指輪-リストバンドコイル間の磁気結合を用いた超低電力な指輪型無線XRコントローラの設計},
author = {山本英昂 and 李蘊韜 and 韓燦教 and 横田知之 and 染谷隆夫 and 川原圭博 and 高橋亮},
booktitle = {信学ソ大2025},
note = {B-15-32},
address = {岡山},
year = {2025},
month = sep
}超低電力な指輪型無線マウス Domestic
情報処理学会 UBI研究会, 第87回, 富山 (September 2025).
優秀論文賞
@inproceedings{高橋2025x,
title = {超低電力な指輪型無線マウス},
author = {高橋亮 and Y. Li and 福本雅朗 and M. Kari and 山本英昂 and 野田聡人 and 石田繁巳 and 横田知之 and 染谷隆夫 and 川原圭博},
booktitle = {情報処理学会 UBI研究会},
note = {第87回},
address = {富山},
year = {2025},
month = sep
}Roam beyond Battery: 長期的な屋内広範囲運用に向けた無線給電対応の小型移動ロボットネットワーク Domestic
ROBOMECH2025, 2A1-J10, 山形 (June 2025).
ROBOMECH2025 ベストデモンストレーション表彰
@inproceedings{韓燦2025roam,
title = {Roam beyond Battery: 長期的な屋内広範囲運用に向けた無線給電対応の小型移動ロボットネットワーク},
author = {韓燦教 and 高橋亮 and 野田聡人 and 川原圭博},
booktitle = {ROBOMECH2025},
note = {2A1-J10},
address = {山形},
year = {2025},
month = jun
}移動関節ヘビ型ロボット:任意の体幹位置を能動屈曲可能なヘビ型ロボットによるセンサレス狭路推進制御の検討 Domestic
ROBOMECH2025, 2A1-R01, 山形 (June 2025).
@inproceedings{保坂2025x,
title = {移動関節ヘビ型ロボット:任意の体幹位置を能動屈曲可能なヘビ型ロボットによるセンサレス狭路推進制御の検討},
author = {保坂琉介 and 金田礼人 and 林渓人 and 中島康貴 and 高橋亮 and 雪田和歌子 and 横田知之 and 染谷隆夫 and 亀﨑允啓 and 川原圭博 and 佐藤峻 and 来見田淳也 and 岩瀬英治 and 山本元司},
booktitle = {ROBOMECH2025},
note = {2A1-R01},
address = {山形},
year = {2025},
month = jun
}無線で給電・通信ができる衣服を実現 多彩なウエアラブルデバイス活用に道 Article
JSTnews, 8月号 (August 2026).
@article{高橋2026x,
title = {無線で給電・通信ができる衣服を実現 多彩なウエアラブルデバイス活用に道},
author = {高橋亮},
journal = {JSTnews},
note = {8月号},
year = {2026},
month = aug
}ヒトの周りでの安全・大面積・W級の服型無線給電ネットワーク Article
月刊EMC, 8月号 (July 2026).
@article{高橋2026w,
title = {ヒトの周りでの安全・大面積・W級の服型無線給電ネットワーク},
author = {高橋亮},
journal = {月刊EMC},
note = {8月号},
year = {2026},
month = jul
}Awards
2026
Funai Foundation for Information Technology
2026
IEEJ Sensors and Micromachines Society
2025
16th Symposium on Micro-Nano Science and Technology
2025
42nd Sensor Symposium on Sensors, Micromachines and Applied Systems
2025
IPSJ SIG-UBI, 87th Meeting