Journal ArticleDOI
Artificial bacterial flagella for micromanipulation
TLDR
An overview of recent developments in artificial bacterial flagella (ABFs) is presented and discusses challenges and opportunities in pursuing applications, including the manipulation of small objects within liquid.Abstract:
This article presents an overview of recent developments in artificial bacterial flagella (ABFs) and discusses challenges and opportunities in pursuing applications. These helical swimmers possess several advantageous characteristics, such as high swimming velocity and precise motion control indicating their potential for diverse applications. One application is the manipulation of small objects within liquid, which is the focus of this review. Preliminary results have shown that ABFs are capable of performing microobject manipulation either directly by mechanical contact or indirectly by generating a localized fluid flow. The latter approach can be used for batch manipulation without direct contact, also implying possibilities for flow control in lab-on-a-chip systems. Miniaturized helical swimmers are also promising for biomedical applications, such as targeted drug delivery and implantation or removal of tissues and other objects.read more
Citations
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Journal ArticleDOI
Magnetic Helical Micromachines: Fabrication, Controlled Swimming, and Cargo Transport
Soichiro Tottori,Li Zhang,Famin Qiu,Krzysztof Krawczyk,Alfredo Franco-Obregón,Bradley J. Nelson +5 more
TL;DR: A simple and general fabrication method for helical swimming micromachines by direct laser writing and e-beam evaporation is demonstrated and the magnetic helical devices exhibit varying magnetic shape anisotropy, yet always generate corkscrew motion using a rotating magnetic field.
Journal ArticleDOI
Bio-inspired magnetic swimming microrobots for biomedical applications.
TL;DR: This article reviews the various swimming methods with particular focus on helical propulsion inspired by E. coli bacteria, and the frequency-dependent behavior of helical microrobots is discussed and preliminary experimental results are presented showing the decoupling of an individual agent within a group of three microrOBots.
Journal ArticleDOI
Nano/micromotors in (bio)chemical science applications.
TL;DR: The authors would like to acknowledge MINECO (formerly, MICINN) for the project grant MAT2011-25870 and BES-2009-023939 for the predoctoral fellowship.
Journal ArticleDOI
Controlled In Vivo Swimming of a Swarm of Bacteria‐Like Microrobotic Flagella
Ania Servant,Ania Servant,Famin Qiu,Mariarosa Mazza,Mariarosa Mazza,Kostas Kostarelos,Kostas Kostarelos,Bradley J. Nelson +7 more
TL;DR: In vivo imaging and actuation of a swarm of magnetic helical microswimmers by external magnetic fields in deep tissue is demonstrated for the first time, yielding a generation of micrometer-scale transporters with numerous applications in biomedicine including synthetic biology, assisted fertilization, and drug/gene delivery.
Journal ArticleDOI
Cargo‐Towing Fuel‐Free Magnetic Nanoswimmers for Targeted Drug Delivery
Wei Gao,Daniel Kagan,On Shun Pak,Corbin Clawson,Susana Campuzano,Erdembileg Chuluun-Erdene,Erik Shipton,Eric E. Fullerton,Liangfang Zhang,Eric Lauga,Joseph Wang +10 more
TL;DR: It is demonstrated that flexible magnetic nickel-silver nanoswimmers are able to transport micrometer particles at high speeds of more than 10 μm s(-1) (more than 0.2 body lengths per revolution in dimensionless speed).
References
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