Bacterial flagella-based propulsion and on/off motion control of microscale objects

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Principles of Colloid and Surface Chemistry

Paul Hiemenz, Raj Rajagopalan (1997)

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Powering an inorganic nanodevice with a biomolecular motor.

R. K. Soong, G. D. Bachand, H. P. Neves … (2000)

Biomolecular motors such as F1-adenosine triphosphate synthase (F1-ATPase) and myosin are similar in size, and they generate forces compatible with currently producible nanoengineered structures. We have engineered individual biomolecular motors and nanoscale inorganic systems, and we describe their integration in a hybrid nanomechanical device powered by a biomolecular motor. The device consisted of three components: an engineered substrate, an F1-ATPase biomolecular motor, and fabricated nanopropellers. Rotation of the nanopropeller was initiated with 2 mM adenosine triphosphate and inhibited by sodium azide.

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Moving fluid with bacterial carpets.

Nicholas C Darnton, Linda Turner, Kenneth Breuer … (2004)

We activated a solid-fluid interface by attaching flagellated bacteria to a solid surface. We adsorbed swarmer cells of Serratia marcescens to polydimethylsiloxane or polystyrene. The cell bodies formed a densely packed monolayer while their flagella continued to rotate freely. Motion of the fluid close to an extended flat surface, visualized with tracer beads, was dramatically enhanced compared to the motion farther away. The tracer beads revealed complex ever-changing flow patterns, some linear (rivers), others rotational (whirlpools). Typical features of this flow were small (tens of micro m) and reasonably stable (many minutes). The surface performed active mixing equivalent to diffusion with a coefficient of 2 x 10(-7) cm(2)/s. We call these flat constructs "bacterial carpets". When attached to polystyrene beads or to fragments of polydimethylsiloxane, the bacteria generated both translation and rotation. We call these constructs "auto-mobile beads" or "auto-mobile chips". Given the size and strength of the flow patterns near the carpets, the motion must be generated by small numbers of coordinated flagella. We should be able to produce larger and longer-range effects by increasing coordination.

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Journal

Title: Applied Physics Letters

Abbreviated Title: Appl. Phys. Lett.

Publisher: AIP Publishing

ISSN (Print): 0003-6951

ISSN (Electronic): 1077-3118

Publication date Created: January 08 2007

Publication date (Print): January 08 2007

Volume: 90

Issue: 2

Page: 023902

Article

DOI: 10.1063/1.2431454

SO-VID: 38b6ef8c-0a79-4790-b41b-c787af27212a

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Bacterial flagella-based propulsion and on/off motion control of microscale objects

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Abstract

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Bacterial extracellular vesicles

Most cited references 7

Principles of Colloid and Surface Chemistry

Powering an inorganic nanodevice with a biomolecular motor.

Moving fluid with bacterial carpets.

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