2020
DOI: 10.1126/scirobotics.abc8191
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An agglutinate magnetic spray transforms inanimate objects into millirobots for biomedical applications

Abstract: Millirobots that can adapt to unstructured environments, operate in confined spaces, and interact with a diverse range of objects would be desirable for exploration and biomedical applications. The continued development of millirobots, however, requires simple and scalable fabrication techniques. Here, we propose a minimalist approach to construct millirobots by coating inanimate objects with a composited agglutinate magnetic spray. Our approach enables a variety of one-dimensional (1D), 2D, or 3D objects to b… Show more

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Cited by 148 publications
(118 citation statements)
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“…Soft manipulators or robots from nanometer to centimeter scale will find their unique applications in their own areas. Small-scale soft robots, e.g., micromagnetic robots, [422][423][424] micromanipulators, [425] and nanorobots, [426,427] will exert their unique advantages in dexterity, maneuverability, and accessibility, whereas macroscale soft devices will continue to focus on macroscale navigation, diagnosis, and operation. Cross-scale collaboration is very attractive, through which their respective advantages may be combined.…”
Section: New Structural Paradigmmentioning
confidence: 99%
“…Soft manipulators or robots from nanometer to centimeter scale will find their unique applications in their own areas. Small-scale soft robots, e.g., micromagnetic robots, [422][423][424] micromanipulators, [425] and nanorobots, [426,427] will exert their unique advantages in dexterity, maneuverability, and accessibility, whereas macroscale soft devices will continue to focus on macroscale navigation, diagnosis, and operation. Cross-scale collaboration is very attractive, through which their respective advantages may be combined.…”
Section: New Structural Paradigmmentioning
confidence: 99%
“…Furthermore, the possibility of transforming objects into magnetic millirobots by spray coating with a M‐spray composed of polyvinyl acetate (PVA), gluten, and iron particles has been demonstrated and put into practice for drug delivery applications. [ 134 ] In other application areas, such as biomedicine, magnetoactive elastomers have found utility based on the possibility of these millirobots to be remotely actioned. For instance, in several types of surgeries, the utilization of small‐scale soft continuum robots is promising, since they give the possibility of navigating through complex and constrained environments.…”
Section: Applications Of Mr Elastomersmentioning
confidence: 99%
“…To manipulate nonmagnetic objects, intermediate magnetic tools such as magnetic pushers [23], [24], grippers [25], swarm of magnetic agents [14], [15], and magnetic agent-induced fluid flow [26] have been employed. A magnetic spray has also been used for magnetic tagging of non-magnetic objects to enable magnetic manipulation [27]. Manipulation of non-magnetic objects on the air-liquid interfaces has also been previously done using other methods, e.g.…”
Section: Introductionmentioning
confidence: 99%