Linked Life Data

17045879

Source:http://linkedlifedata.com/resource/pubmed/id/17045879

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2006-10-18
pubmed:abstractText
A modified mathematical formulation for the calculation of axial radiation force was developed to incorporate the effect of ultrasonic attenuation. Axial forces, Fresnel coefficients, average internal attenuation factors and effective internal reflection coefficients were calculated. Thermal and mechanical indices were also computed to address the safety issues in the implementation of acoustic tweezers and were found to be negligible. The results show that the overall distribution of axial forces is barely affected by attenuation. Furthermore, it is found that attenuation actually works against the scattering force and may therefore reinforce the axial trapping force. For a particle size of 180 microm, the maximum trapping force increases from 29.8 x 10(-11) N to 30.3 x 10(-11) N by 1.7% when attenuation is included. In light of these results, it appears that acoustic tweezers may still be feasible beyond the focal point even under the influence of attenuation.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0301-5629
pubmed:author
pubmed:issnType
Print
pubmed:volume
32
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1575-83
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Effect of ultrasonic attenuation on the feasibility of acoustic tweezers.
pubmed:affiliation
Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA. jungwool@usc.edu
pubmed:publicationType
Journal Article, Research Support, N.I.H., Extramural