Mechanically interlocked 3D multi-material micromachines.

Abstract:

:Metals and polymers are dissimilar materials in terms of their physicochemical properties, but complementary in terms of functionality. As a result, metal-organic structures can introduce a wealth of novel applications in small-scale robotics. However, current fabrication techniques are unable to process three-dimensional metallic and polymeric components. Here, we show that hybrid microstructures can be interlocked by combining 3D lithography, mold casting, and electrodeposition. Our method can be used to achieve complex multi-material microdevices with unprecedented resolution and topological complexity. We show that metallic components can be combined with structures made of different classes of polymers. Properties of both metals and polymers can be exploited in parallel, resulting in structures with high magnetic responsiveness, elevated drug loading capacity, on-demand shape transformation, and elastic behavior. We showcase the advantages of our approach by demonstrating new microrobotic locomotion modes and controlled agglomeration of swarms.

journal_name

Nat Commun

journal_title

Nature communications

authors

Alcântara CCJ,Landers FC,Kim S,De Marco C,Ahmed D,Nelson BJ,Pané S

doi

10.1038/s41467-020-19725-6

subject

Has Abstract

pub_date

2020-11-24 00:00:00

pages

5957

issue

1

issn

2041-1723

pii

10.1038/s41467-020-19725-6

journal_volume

11

pub_type

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