Takuya Sasatani is a project assistant professor（特任助教） in the Graduate School of Engineering, the University of Tokyo. His research focuses on empowering the internet of things by exploring new approaches for ubiquitous wireless power transfer (WPT), low-power communication, and sensing technologies.
Takuya received his Ph.D. degree in information science and technology and a B.E. degree in electrical and electronic engineering from The University of Tokyo, Japan, in 2021 and 2016. During his graduate studies, he worked at Disney Research, USA, as a lab associate researcher.
Address: Room #112C1 Bldg. 2, Faculty of Eng. The Univ. of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656 JAPAN
Sept. 23, 2021
Our project on room-scale wireless power is featured on the cover and in the editorial of Nature Electronics, September 2021 issue.
Aug. 30, 2021
Our Article on room-scale wireless power is now published in Nature Electronics.
Takuya Sasatani, Alanson P. Sample, Yoshihiro Kawahara, Room-scale magnetoquasistatic wireless power transfer using a cavity-based multimode resonator, Nature Electronics, 2021. [Article link] [public copy]
Images related to this publication can be found here.
Please credit The University of Tokyo and Nature Electronics when using these material in news stories.
Selected research projects
Room-scale wireless power transfer via multimode quasistatic cavity resonance
This work presents an approach termed multimode quasistatic cavity resonance for enabling efficient and safe wireless power throughout a room-scale volume.
Takuya Sasatani, Alanson P. Sample, Yoshihiro Kawahara, "Room-scale magnetoquasistatic wireless power transfer using a cavity-based multimode resonator," Nature Electronics, 2021.
Takuya Sasatani, Matthew J. Chabalko, Yoshihiro Kawahara, and Alanson P. Sample, “Multimode Quasistatic Cavity Resonators for Wireless Power Transfer,” IEEE Antennas and Wireless Propagation Letters, 2017. [paper]
笹谷拓也，川原圭博，“部屋全域への無線電力伝送に向けたマルチモード準静空洞共振器,” 研究報告ユビキタスコンピューティングシステム（UBI）, 2019. 山下記念論文賞 & 優秀論文賞
Alvus: an instantly reconfigurable 2-D wireless power transfer system
We often place devices on surfaces such as desks and shelves; thus, deploying 2-D wireless power transfer on these surfaces can offer a ubiquitous charging experience. This work presents a reconfigurable 2-D wireless charging system, leveraging the "multi-hop" power transfer effect for facilitating the deployment of such functional surfaces.
Kazunobu Sumiya, Takuya Sasatani, Yuki Nishizawa, Kenji Tsushio, Yoshiaki Narusue, and Yoshihiro Kawahara, “Alvus: A Reconfigurable 2-D Wireless Charging System,” ACM IMWUT, 2019. [paper] Distinguished paper award (formerly the best paper award)
A cuttable wireless power transfer sheet
To integrate wireless power transfer (WPT) functions into daily surfaces, people need to design a coil array according to the size and shape of the target surface. This work presents a cuttable WPT sheet that only requires users to cut and paste a ready-made sheet to augment everyday surfaces into a wireless charging surface.
Ryo Takahashi, Takuya Sasatani, Fuminori Okuya, Yoshiaki Narusue, and Yoshihiro Kawahara, “A Cuttable Wireless Power Transfer Sheet,” ACM IMWUT, 2018. [paper]
Room-wide wireless power transfer and low-power communication for the Internet of Things
To achieve long-term operation of IoT systems, (i) ubiquitous wireless power transfer and (ii) low-power communication systems are necessary. This work presents a wireless power/data transfer system, which co-exists on the 3-D magnetic field channel generated by a room-scale quasistatic cavity resonator.
Takuya Sasatani, Chouchang Jack Yang, Matthew J. Chabalko, Yoshihiro Kawahara, and Alanson P. Sample, “Room-Wide Wireless Charging and Load-Modulation Communication via Quasistatic Cavity Resonance,” ACM IMWUT, 2018. [paper]
TelemetRing: a batteryless and wireless ring-shaped keyboard using inductive telemetry
TelemetRing is a batteryless and wireless ring-shaped keyboard that supports command and text entry in daily lives by detecting finger typing on various surfaces. The proposed inductive telemetry approach eliminates bulky batteries or capacitors from the ring part.
Ryo Takahashi, Masaaki Fukumoto, Changyo Han, Takuya Sasatani, Yoshiaki Narusue, and Yoshihiro Kawahara, “TelemetRing: A Batteryless and Wireless Ring-shaped Keyboard using Passive Inductive Telemetry,” ACM UIST, 2020.
Empowering robots with circuit/wireless technology
As robots become more complex, small, and sophisticated, the cost and effort necessary for “wiring” become critical. This series of work explore techniques for efficiently empowering the system peripherals necessary in robotic applications.
Colm McCaffrey, Takuya Umedachi, Weiwei Jiang, Takuya Sasatani, Yoshiaki Narusue, Ryuma Niiyama, Yoshihiro Kawahara, “Continuum robotic caterpillar with wirelessly powered shape memory alloy actuators”, J. of Softrobotics, 2020.
Yuki Nishizawa, Takuya Sasatani, Matthew Ishige, Yoshiaki Narusue, Takuya Umedachi, Yoshihiro Kawahara, “Ramus: A Frequency-Multiplexed Power Bus for Powering, Sensing and Controlling Robots,” IEEE Robotics and Automation Letters (Proc. of RoboSoft 2020), 2020.
Lai Chen, Takuya Sasatani, Keung Or, Satoshi Nishikawa, Yoshihiro Kawahara, Ryuma Niiyama, and Yasuo Kuniyoshi, "Wireless powered dielectric elastomer actuator," IEEE Robotics and Automation Letters (Proc. of IROS 2021), 2021.
Designing wireless power receivers with Genetic Algorithm
Takuya Sasatani, Yoshiaki Narusue, and Yoshihiro Kawahara, “Genetic Algorithm-Based Receiving Resonator Array Design for Wireless Power Transfer,” IEEE Access, 2020.
Wireless power transfer and communication over the hinges of smart glasses
Inkjet printed, passive, and contactless epidermal pressure sensor
Dynamic complex impedance conversion using multiple-input DC/DC converters
Wireless power transfer for personal mobility devices