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Micro-/Nanorobots Propelled by Oscillating Magnetic Fields

Authors :
Hao Yu
Wentian Tang
Guanyu Mu
Haocheng Wang
Xiaocong Chang
Huijuan Dong
Liqun Qi
Guangyu Zhang
Tianlong Li
Source :
Micromachines, Vol 9, Iss 11, p 540 (2018)
Publication Year :
2018
Publisher :
MDPI AG, 2018.

Abstract

Recent strides in micro- and nanomanufacturing technologies have sparked the development of micro-/nanorobots with enhanced power and functionality. Due to the advantages of on-demand motion control, long lifetime, and great biocompatibility, magnetic propelled micro-/nanorobots have exhibited considerable promise in the fields of drug delivery, biosensing, bioimaging, and environmental remediation. The magnetic fields which provide energy for propulsion can be categorized into rotating and oscillating magnetic fields. In this review, recent developments in oscillating magnetic propelled micro-/nanorobot fabrication techniques (such as electrodeposition, self-assembly, electron beam evaporation, and three-dimensional (3D) direct laser writing) are summarized. The motion mechanism of oscillating magnetic propelled micro-/nanorobots are also discussed, including wagging propulsion, surface walker propulsion, and scallop propulsion. With continuous innovation, micro-/nanorobots can become a promising candidate for future applications in the biomedical field. As a step toward designing and building such micro-/nanorobots, several types of common fabrication techniques are briefly introduced. Then, we focus on three propulsion mechanisms of micro-/nanorobots in oscillation magnetic fields: (1) wagging propulsion; (2) surface walker; and (3) scallop propulsion. Finally, a summary table is provided to compare the abilities of different micro-/nanorobots driven by oscillating magnetic fields.

Details

Language :
English
ISSN :
2072666X
Volume :
9
Issue :
11
Database :
Directory of Open Access Journals
Journal :
Micromachines
Publication Type :
Academic Journal
Accession number :
edsdoj.6f1e5e18a71b425d952e9f932e66f314
Document Type :
article
Full Text :
https://doi.org/10.3390/mi9110540