Linked Life Data

19551124

Source:http://linkedlifedata.com/resource/pubmed/id/19551124

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
26
pubmed:dateCreated
2009-6-24
pubmed:abstractText
Holographic optical tweezers is a widely used technique to manipulate the individual positions of optically trapped micron-sized particles in a sample. The trap positions are changed by updating the holographic image displayed on a spatial light modulator. The updating process takes a finite time, resulting in a temporary decrease of the intensity, and thus the stiffness, of the optical trap. We have investigated this change in trap stiffness during the updating process by studying the motion of an optically trapped particle in a fluid flow. We found a highly nonlinear behavior of the change in trap stiffness vs. changes in step size. For step sizes up to approximately 300 nm the trap stiffness is decreasing. Above 300 nm the change in trap stiffness remains constant for all step sizes up to one particle radius. This information is crucial for optical force measurements using holographic optical tweezers.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1094-4087
pubmed:author
pubmed:issnType
Electronic
pubmed:day
24
pubmed:volume
15
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
18268-74
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
The effect of external forces on discrete motion within holographic optical tweezers.
pubmed:affiliation
Department of Physics, Göteborg University, SE-41296 Göteborg, Sweden.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't