Conference proceeding
MAGNETIC CONTROL OF BIOLOGICALLY INSPIRED ROBOTIC MICROSWIMMERS
PROCEEDINGS OF THE ASME/JSME/KSME JOINT FLUIDS ENGINEERING CONFERENCE 2011, VOL 1, PTS A-D, pp.2043-2048
01 Jan 2012
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Bacterial flagella have been employed as nanoactuators for biomimetic microswimmers in low Reynolds number fluidic environments. The microswimmer is a dumbbell-like swimmer that utilizes flagellar hydrodynamics to achieve spiral-type swimming. Flagellar filaments from Salmonella typhimurium are harnessed and functionalized in order to serve as couplers for polystyrene (PS) microbeads and magnetic nanoparticles (MNPs) using avidin-biotin chemistry. The MNP have an iron oxide core that will allow us to actuate the microswimmer under a rotating magnetic field. Using a micromanufacturing process, microswimmer of different configurations can be created to mimic mono- and multi-flagellated bacteria. A magnetic control system consists of electromagnetic coils arranged in an approximate Helmholtz configuration was designed, constructed, and characterized. In conjunction with a LabVIEW input interface, a DAQ controller was used as a function generator to generate sinusoidal waveforms to the power supplies. AC current outputs were supplied from the power supplies to the coils in order to generate a rotating magnetic field. A rotating magnetic field will induce rotation in the flagella conjugated MNP which in term will rotate the flagellar filament into a spiral configuration and achieve propulsion, as in polarly-flagellated bacteria. A high-speed camera provided real-time imaging of the microswimmer motion in a static fluidic environment inside a closed PDMS (Polydimethylsiloxane) chamber. The microswimmers exhibited flagellar propulsion in a low Reynolds number fluidic environment under a rotating magnetic field, which demonstrates its potential for biomedical applications.
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Details
- Title
- MAGNETIC CONTROL OF BIOLOGICALLY INSPIRED ROBOTIC MICROSWIMMERS
- Creators
- U. Kei Cheang - Drexel Univ, Dept Mech Engn & Mech, Philadelphia, PA 19104 USAJun Hee LeePaul Kim - Drexel Univ, Dept Mech Engn & Mech, Philadelphia, PA 19104 USAMin Jun Kim - Drexel Univ, Dept Mech Engn & Mech, Philadelphia, PA 19104 USAASME
- Publication Details
- PROCEEDINGS OF THE ASME/JSME/KSME JOINT FLUIDS ENGINEERING CONFERENCE 2011, VOL 1, PTS A-D, pp.2043-2048
- Conference
- ASME/JSME/KSME JOINT FLUIDS ENGINEERING CONFERENCE 2011
- Publisher
- Amer Soc Mechanical Engineers
- Number of pages
- 6
- Resource Type
- Conference proceeding
- Language
- English
- Identifiers
- 991019330810204721
UN Sustainable Development Goals (SDGs)
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- Web of Science research areas
- Engineering, Mechanical