Self-propelled two dimensional polymer multilayer plate micromotors

Gai, Meiyu; Frueh, Johannes; Hu, Narisu; Si, Tieyan; Sukhorukov, Gleb B.; He, Qiang

doi:10.1039/c5cp07697h

Cited by 32 publications

(35 citation statements)

References 24 publications

(37 reference statements)

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“…As a result, clearly structured PEM‐Fe 3 O 4 ‐Pt composite microplates were formed as shown in scanning electron micrographs (SEMs) in Figure . As Figure B displays, superparamagnetic iron oxide nanoparticles (size 15–30 nm) assembled by electrostatic forces are evenly distributed on the PEM microplates, while sputtered Pt nanoparticles in Figure C resulted in a less homogeneous particle distribution, which is in agreement with previous reports …”

Section: Resultssupporting

confidence: 91%

“…The approach in ref . is based on purely analytical assumptions, while the one in ref . is based on empirical equations.…”

Section: Resultsmentioning

confidence: 99%

“…versus real cell laden microplate motor speed; B) shows reliability of the simulated and real bubble driven speed for several bubble life cycles. Comparison of simulated (using approach of ref …”

Section: Resultsmentioning

confidence: 99%

“…The current problems in this field lie less in the choice of cell types but rather in finding a proper autonomous controlled transport system as well as storing the cells with subsequent proliferation supports . In recent years, significant progress in the field of self‐propelled micromotors was achieved, offering a rich choice of shape, size, motion principles, and fabrication materials for self‐propelled micromotors . The possibility of magnetic guidance, pickup of magnetic nanoparticles, as well as delivery of preloaded cells was demonstrated for tubular microrockets fabricated via a strain engineered process .…”

Section: Introductionmentioning

confidence: 99%

“…is possible due to too‐low magnetite concentration. The motion pattern and speed were compared with analytical and numerical simulations of refs . and the literature …”

Section: Introductionmentioning

confidence: 99%

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Forecastable and Guidable Bubble‐Propelled Microplate Motors for Cell Transport

Zhang

Gai

et al. 2017

Macromol. Rapid Commun.

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Cell transport is important to renew body functions and organs with stem cells, or to attack cancer cells with immune cells. The main hindrances of this method are the lack of understanding of cell motion as well as proper transport systems. In this publication, bubble-propelled polyelectrolyte microplates are used for controlled transport and guidance of HeLa cells. Cells survive attachment on the microplates and up to 22 min in 5% hydrogen peroxide solution. They can be guided by a magnetic field whereby increased friction of cells attached to microplates decreases the speed by 90% compared to pristine microplates. The motion direction of the cell-motor system is easier to predict due to the cell being opposite to the bubbles.

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Section: Resultssupporting

confidence: 91%

“…The approach in ref . is based on purely analytical assumptions, while the one in ref . is based on empirical equations.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…is possible due to too‐low magnetite concentration. The motion pattern and speed were compared with analytical and numerical simulations of refs . and the literature …”

Section: Introductionmentioning

confidence: 99%

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Forecastable and Guidable Bubble‐Propelled Microplate Motors for Cell Transport

Zhang

Gai

et al. 2017

Macromol. Rapid Commun.

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Self‐Propelled Rolled‐Up Polyelectrolyte Multilayer Microrockets

Sun

Lin

et al. 2018

Adv Funct Materials

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Engineering self‐propelled micro‐/nanomachines with ultrafast speeds and high towing forces is crucial for the efficient transportation of important objects in key biomedical and environmental applications. In this study, rolled‐up nanomembrane technology is used for the first time for the controlled fabrication of layer‐by‐layer (LbL)‐assembled microtubes and the corresponding chemical‐powered microrockets. By integrating LbL assembly, microcontact printing, and a rolled‐up nanomembrane technique, polyelectrolyte multilayer microplates of different shapes are transformed into well‐defined microtubes. Coupled with platinum nanoparticles, the as‐prepared microtubes can act as bubble‐propelled microrockets with a very rapid speed and a large towing force. As a proof of concept, the rolled LbL microrockets confirm the feasibility of transporting single or multiple cells at high speed. Integrating the rolled‐up nanomembrane technology and LbL assembly results in a simple, versatile, and low‐cost approach and expands the scope of both polymer multilayer‐based multifunctional tubes and artificial machines at the micro‐/nanoscale.

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2D Active Nanobots Based on Soft Nanoarchitectonics Powered by an Ultralow Fuel Concentration

2022

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Enzyme catalysis to power micro/nanomotors has received tremendous attention because of the vast potential in applications ranging from biomedicine to environmental remediation. However, the current design is mainly based on a complex three-dimensional (3D) architecture, with limited accessible surface areas for the catalytic sites, and thus requires a higher fuel concentration to achieve active motion. Herein we report for the first time an enzyme-powered 2D nanobot, which was designed by a facile strategy based on soft nanoarchitectonics for active motion at an ultralow fuel concentration (0.003 % H 2 O 2 ). The 2D nanobots exhibited efficient positive chemotactic behavior and the ability to swim against gravity by virtue of solutal buoyancy. As a proof-ofconcept, the 2D nanobots showed an excellent capability for "on-the-fly" removal of methylene blue (MB) dye with an efficiency of 85 %.

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Self-propelled two dimensional polymer multilayer plate micromotors

Cited by 32 publications

References 24 publications

Forecastable and Guidable Bubble‐Propelled Microplate Motors for Cell Transport

Forecastable and Guidable Bubble‐Propelled Microplate Motors for Cell Transport

Self‐Propelled Rolled‐Up Polyelectrolyte Multilayer Microrockets

2D Active Nanobots Based on Soft Nanoarchitectonics Powered by an Ultralow Fuel Concentration

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