A chemotactic microrobot with integrated iridescent surface for optical-tracking

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

4 Scopus Citations
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Author(s)

  • Yuzhao Zhang
  • Jingang Wang
  • Haibo Yu
  • Jianchen Zheng
  • Xiubao Zhao
  • Hongji Guo
  • Ye Qiu
  • Xiaoduo Wang
  • Lianqing Liu

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number144222
Journal / PublicationChemical Engineering Journal
Volume472
Online published19 Jun 2023
Publication statusPublished - 15 Sept 2023

Abstract

Recent advancements in materials, nanofabrication, actuation, and sensing have facilitated the development of untethered microrobots. However, realizing sub-millimeter-integrated microrobots with actuation, perception, and wireless communication capabilities remains elusive. In this study, we present the successful fabrication of chemotactic microrobots at the micron scale, featuring integrated iridescent structural color surfaces that can be utilized for robot motion control through optical tracking. Using a pH-responsive biopolymer as the carrier, we have created microrobots that employ bilayer joints, mimicking the actuation characteristics observed in arthropods. Additionally, biomimetic microstructures with structural color functionality have been incorporated onto the surface of the robots, serving as an optical-communication skin. The robots are actuated through reversible expansion triggered at the phase transition threshold of the biopolymer, while their geometric states and posture information are acquired by converting the volume strain into color variations. This research can potentially establish a critical pathway for developing state-feedback-controlled microrobots for future biomedical applications. © 2023 Published by Elsevier B.V.

Research Area(s)

  • 4D printing, Bio-inspired, Micro-fabrication, Responsive, Structural color

Citation Format(s)

A chemotactic microrobot with integrated iridescent surface for optical-tracking. / Zhang, Yuzhao; Wang, Jingang; Yu, Haibo et al.
In: Chemical Engineering Journal, Vol. 472, 144222, 15.09.2023.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review