Micro-rocket robot with all-optic actuating and tracking in blood

Dengfeng Li; Chao Liu; Yuanyuan Yang; Lidai Wang; Yajing Shen

doi:10.1038/s41377-020-0323-y

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Micro-rocket robot with all-optic actuating and tracking in blood

Original Articles

- Micro-rocket robot with all-optic actuating and tracking in blood
- Micro-rocket robot with all-optic actuating and tracking in blood
- LSA 2020年9卷第3期页码：802-811
- Affiliations：
  
  1.Department of Biomedical Engineering, City University of Hong Kong, 999077 Hong Kong, China
  2.City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
- Author bio：
  
  Lidai Wang (lidawang@cityu.edu.hk)
  Yajing Shen (yajishen@cityu.edu.hk)
- Funds：
- DOI：10.1038/s41377-020-0323-y
  中图分类号：
- 纸质出版日期：2020，
  
  网络出版日期：2020-05-11，
  
  收稿日期：2020-01-19，
  
  修回日期：2020-04-21，
  
  录用日期：2020-04-24
- Accepted：
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Micro-rocket robot with all-optic actuating and tracking in blood[J]. LSA, 2020,9(3):802-811.

Li, D. F. et al. Micro-rocket robot with all-optic actuating and tracking in blood. Light: Science & Applications, 9, 802-811 (2020).
Micro-rocket robot with all-optic actuating and tracking in blood[J]. LSA, 2020,9(3):802-811. DOI： 10.1038/s41377-020-0323-y.

Li, D. F. et al. Micro-rocket robot with all-optic actuating and tracking in blood. Light: Science & Applications, 9, 802-811 (2020). DOI： 10.1038/s41377-020-0323-y.

摘要

Abstract

Micro/nanorobots have long been expected to reach all parts of the human body through blood vessels for medical treatment or surgery. However

in the current stage

it is still challenging to drive a microrobot in viscous media at high speed and difficult to observe the shape and position of a single microrobot once it enters the bloodstream. Here

we propose a new micro-rocket robot and an all-optic driving and imaging system that can actuate and track it in blood with microscale resolution. To achieve a high driving force

we engineer the microrobot to have a rocket-like triple-tube structure. Owing to the interface design

the 3D-printed micro-rocket can reach a moving speed of 2.8 mm/s (62 body lengths per second) under near-infrared light actuation in a blood-mimicking viscous glycerol solution. We also show that the micro-rocket robot is successfully tracked at a 3.2-µm resolution with an optical-resolution photoacoustic microscope in blood. This work paves the way for microrobot design

actuation

and tracking in the blood environment

which may broaden the scope of microrobotic applications in the biomedical field.

关键词

Keywords

references

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