2025-03-28 カリフォルニア大学バークレー校 (UCB)
＜関連情報＞
- https://news.berkeley.edu/2025/03/28/uc-berkeley-engineers-create-worlds-smallest-wireless-flying-robot/
- https://www.science.org/doi/10.1126/sciadv.ads6858
紐なしサブセンチメートル飛行ロボット Untethered subcentimeter flying robots
Fanping Sui, Wei Yue, Kamyar Behrouzi, Yuan Gao, […], and Liwei Lin
Science Advances Published:28 Mar 2025
DOI:https://doi.org/10.1126/sciadv.ads6858
Abstract
The miniaturization of insect-scale flying robots with untethered flights is extremely challenging as the tradeoff between mass and power becomes problematic. Here, a subcentimeter rotating-wing robot of 21 mg in weight and 9.4 mm in wingspan driven by a single-axis alternating magnetic field has accomplished navigable flights. This artificial flying robot is the lightest and smallest to realize untethered and controllable aerial travels including hovering, collision recovery, and route adjustments. Experimentally, it has achieved a high aerodynamic efficacy with a measured lift-to-drag ratio of 0.7 and lift–to–flying power ratio of 7.2 × 10−2 N/W at a Reynolds number of ~2500. The wireless driving mechanism, system operation principle, and flight characteristics can be further optimized for the advancement and miniaturization of subcentimeter scale flying robots.
