PENG, Xia, Mario URSO, Martina USSIA and Martin PUMERA. Shape-Controlled Self-Assembly of Light-Powered Microrobots into Ordered Microchains for Cells Transport and Water Remediation. ACS Nano. WASHINGTON: American Chemical Society, 2022, vol. 16, No 5, p. 7615-7625. ISSN 1936-0851. Available from: https://dx.doi.org/10.1021/acsnano.1c11136.
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Basic information
Original name Shape-Controlled Self-Assembly of Light-Powered Microrobots into Ordered Microchains for Cells Transport and Water Remediation
Authors PENG, Xia, Mario URSO, Martina USSIA and Martin PUMERA.
Edition ACS Nano, WASHINGTON, American Chemical Society, 2022, 1936-0851.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10400 1.4 Chemical sciences
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 17.100
RIV identification code RIV/00216224:14740/22:00128759
Organization unit Central European Institute of Technology
Doi http://dx.doi.org/10.1021/acsnano.1c11136
UT WoS 000812148900044
Keywords in English micromotors; swarming; collective behavior; self-assembly; cargo transport; photo-Fenton degradation
Tags CF PROT, ne MU, rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Pavla Foltynová, Ph.D., učo 106624. Changed: 28/2/2023 14:43.
Abstract
Nature presents the collective behavior of living organisms aiming to accomplish complex tasks, inspiring the development of cooperative micro/nanorobots. Herein, the spontaneous assembly of hematite-based microrobots with different shapes is presented. Autonomous motile light-driven hematite/Pt microrobots with cubic and walnut-like shapes are prepared by hydrothermal synthesis, followed by the deposition of a Pt layer to design Janus structures. Both microrobots show a fuel-free motion ability under light irradiation. Because of the asymmetric orientation of the magnetic dipole moment in the crystal, cubic hematite/Pt micro-robots can self-assemble into ordered microchains, contrary to the random aggregation observed for walnut-like microrobots. The microchains exhibit different synchronized motions under light irradiation depending on the mutual orientation of the individual microrobots during the assembly, which allows them to accomplish multiple tasks, including capturing, picking up, and transporting microscale objects, such as yeast cells and suspended matter in water extracted from personal care products, as well as degrading polymeric materials. Such light-powered self-assembled microchains demonstrate an innovative cooperative behavior for small-scale multitasking artificial robotic systems, holding great potential toward cargo capture, transport, and delivery, and wastewater remediation.
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