An Insect-scale Untethered Laser-powered Jumping Microrobot

基于单平面荧光透视的无造影剂 untethered 血管内微型机器人自主导航

Contrast-Free Autonomous Navigation of Untethered Endovascular Microrobots Using Single-Plane Fluoroscopy

本研究针对磁驱动 untethered 血管内微型机器人三维导航的临床障碍，提出 VISTA 数字孪生框架，利用单平面荧光透视实现无造影剂自主导航，显著缩短导航时间、减少校正指令与辐射暴露。

An Insect-scale Self-sufficient Rolling Microrobot

We design an insect-sized rolling microrobot driven by continuously rotating wheels. It measures 18mm$\times$8mm$\times$8mm. There are 2 versions of the robot - a 96mg laser-powered one and a 130mg supercapacitor powered one. The robot can move at 27mm/s (1.5 body lengths per second) with wheels rotating at 300$^\circ$/s, while consuming an average power of 2.5mW. Neither version has any electrical wires coming out of it, with the supercapacitor powered robot also being self-sufficient and is able to roll freely for 8 seconds after a single charge. Low-voltage electromagnetic actuators (1V-3V)…

通过虚拟增强实现X射线透视引导的医用微型机器人定位与操控

X-ray Fluoroscopy Guided Localization and Steering of Medical Microrobots through Virtual Enhancement

针对X射线透视缺乏解剖细节导致医用无缆微型机器人体内定位操控困难的问题，本研究构建带虚拟孪生体的仿真环境，结合目标检测定位方法，实现高分辨率低剂量的机器人跟踪操控，填补了相关技术空白。

Design of the First Insect-scale Spinning-wing Robot

Here we present the design of an insect-scale microrobot that generates lift by spinning its wings. This is in contrast to most other microrobot designs at this size scale which rely on flapping wings to produce lift. The robot has a wing span of 4 centimeters and weighs 133 milligrams. It spins its wings at 47 revolutions/second generating $>$ 138 milligrams of lift while consuming approximately 60 milliwatts of total power and operating at a low voltage ($<$ 3 V). Of the total power consumed 8.8 milliwatts is mechanical power generated, part of which goes towards spinning the wings, and 51 m…

Scaling down an insect-size microrobot, HAMR-VI into HAMR-Jr

Here we present HAMR-Jr, a \SI{22.5}{\milli\meter}, \SI{320}{\milli\gram} quadrupedal microrobot. With eight independently actuated degrees of freedom, HAMR-Jr is, to our knowledge, the most mechanically dexterous legged robot at its scale and is capable of high-speed locomotion (\SI{13.91}{bodylengths~\second^{-1}}) at a variety of stride frequencies (\SI{1}{}-\SI{200}{\hertz}) using multiple gaits. We achieved this using a design and fabrication process that is flexible, allowing scaling with minimum changes to our workflow. We further characterized HAMR-Jr's open-loop locomotion and compare…

Bee$^+$: A 95-mg Four-Winged Insect-Scale Flying Robot Driven by Twinned Unimorph Actuators

We introduce Bee$^+$, a 95-mg four-winged microrobot with improved controllability and open-loop-response characteristics with respect to those exhibited by state-of-the-art two-winged microrobots with the same size and similar weight (i.e., the 75-mg Harvard RoboBee). The key innovation that made possible the development of Bee$^+$ is the introduction of an extremely light (28-mg) pair of twinned unimorph actuators, which enabled the design of a new microrobotic mechanism that flaps four wings independently. A first main advantage of the proposed design, compared to those of two-winged flyers…