CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, China.
School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
Nat Commun. 2020 Jan 16;11(1):326. doi: 10.1038/s41467-019-14234-7.
Bioinspired electronics are rapidly promoting advances in artificial intelligence. Emerging AI applications, e.g., autopilot and robotics, increasingly spur the development of power devices with new forms. Here, we present a strain-controlled power device that can directly modulate the output power responses to external strain at a rapid speed, as inspired by human reflex. By using the cantilever-structured AlGaN/AlN/GaN-based high electron mobility transistor, the device can control significant output power modulation (2.30-2.72 × 10 W cm) with weak mechanical stimuli (0-16 mN) at a gate bias of 1 V. We further demonstrate the acceleration-feedback-controlled power application, and prove that the output power can be effectively adjusted at real-time in response to acceleration changes, i.e., ▵P of 72.78-132.89 W cm at an acceleration of 1-5 G at a supply voltage of 15 V. Looking forward, the device will have great significance in a wide range of AI applications, including autopilot, robotics, and human-machine interfaces.
受生物启发的电子学正在迅速推动人工智能的发展。新兴的人工智能应用，例如自动驾驶和机器人技术，越来越多地刺激具有新形式的功率器件的发展。在这里，我们提出了一种应变控制功率器件，它可以像人类反射一样，快速直接调制对外应变的输出功率响应。通过使用悬臂结构的 AlGaN/AlN/GaN 基高电子迁移率晶体管，该器件可以在 1V 的栅极偏压下，通过弱机械刺激（0-16mN）控制显著的输出功率调制（2.30-2.72×10Wcm）。我们进一步展示了加速度反馈控制的功率应用，并证明输出功率可以根据加速度的变化实时有效地进行调整，即在 15V 的供电电压下，加速度为 1-5G 时，输出功率可以调整为 72.78-132.89Wcm。展望未来，该器件将在自动驾驶、机器人技术和人机接口等广泛的人工智能应用中具有重要意义。
