Capacitor leakage aware duty cycle control for energy harvesting wireless sensor networks. - Ryo Shigeta; Yoshihiro Kawahara; Tohru Asami (SenSys, 2011)

Power harvesting from microwave oven electromagnetic leakage. - Yoshihiro Kawahara; Xiaoying Bian; Ryo Shigeta; Rushi Vyas; Manos M. Tentzeris; Tohru Asami (UbiComp, 2013)

Virtualizing power cords by wireless power transmission and energy harvesting. - Yoshihiro Kawahara; Wei Wei; Yoshiaki Narusue; Ryo Shigeta; Tohru Asami; Manos M. Tentzeris (RWS, 2013)

Bilateration-based Position Estimation of Sensor Nodes for UAV-assisted Wireless Power Transfer Systems. - Kouta Suzuki; Ryo Shigeta; Yoshihiro Kawahara; Tohru Asami (MobiQuitous (Adjunct Proceedings), 2016)

Low-Cost Soil Moisture Profile Probe Using Thin-Film Capacitors and a Capacitive Touch Sensor. - Yuki Kojima; Ryo Shigeta; Naoya Miyamoto; Yasutomo Shirahama; Kazuhiro Nishioka; Masaru Mizoguchi; Yoshihiro Kawahara (Sensors, 2016)

Ground Temperature Difference Driven Sensor for Environmental Monitoring. - Natsuki Ikeda; Ryo Shigeta; Junichiro Shiomi; Yoshihiro Kawahara (UbiComp/ISWC Adjunct, 2018)

Capacitive-Touch-Based Soil Monitoring Device with Exchangeable Sensor Probe. - Ryo Shigeta; Yoshihiro Kawahara; G. Divya Goud; Balaji Naik Banoth (IEEE SENSORS, 2018)

Energy Prediction for Energy Management Method of Sensor Node Powered by Temperature Difference Between Air and Shallow Underground Soil. - Natsuki Ikeda; Ryo Shigeta; Yoshihiro Kawahara (IEEE SENSORS, 2019)

Soil-Monitoring Sensor Powered by Temperature Difference between Air and Shallow Underground Soil. - Natsuki Ikeda; Ryo Shigeta; Junichiro Shiomi; Yoshihiro Kawahara (Proc. ACM Interact. Mob. Wearable Ubiquitous Technol., 2020)