Document Detail

Optimization of chiral structures for micro-scale propulsion.
MedLine Citation:
PMID:  23317170     Owner:  NLM     Status:  Publisher    
Recent advances in micro- and nano-scale fabrication techniques allow for the construction of rigid, helically-shaped micro-swimmers that can be actuated using applied magnetic fields. These swimmers represent the first steps toward the development of micro-robots for targeted drug delivery and minimally invasive surgical procedures. To assess the performance of these devices and improve on their design, we perform shape optimization computations to determine swimmer geometries that maximize speed in the direction of a given applied magnetic torque. We directly assess aspects of swimmer shapes that have been developed in previous experimental studies, including helical propellers with elongated cross-sections, and attached payloads. From these optimizations, we identify key improvements to existing designs that result in swimming speeds that are 250-470% of their original values.
Eric Keaveny; Shawn Walker; Michael Shelley
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-15
Journal Detail:
Title:  Nano letters     Volume:  -     ISSN:  1530-6992     ISO Abbreviation:  Nano Lett.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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