Measurement bias in evanescent wave nano-velocimetry due to tracer size variations

Measurement bias in evanescent wave nano-velocimetry due to tracer size variations Evanescent wave nano-velocimetry is an imaging tool for studying biophysical transport and nano-scale fluid mechanics via tracking the 2D or 3D motion of fluorescent nanoparticles within several hundred nanometers of a fluid--solid interface. Because the information on the third dimension is encoded in the tracer intensity, variation in the tracer size, which is proportional to the particle intensity, can lead to significant measurement uncertainty. In this work, we consider the measurement bias introduced by tracer size polydispersity on the fluid velocimetry measurements. We present a general theoretical model to account for tracer size variation, interaction potentials between tracers and the solid substrate (e.g., electrostatic, van der Waals forces) and analysis of image data. Computational results are provided for typical experimental conditions, and the implications for nano-velocimetry accuracy are discussed. We find that increased tracer particle size variation and the detectability limit of tracer intensity increase measurement bias by up to 10%, which should be accounted for in experimental measurements. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

Measurement bias in evanescent wave nano-velocimetry due to tracer size variations

Loading next page...
 
/lp/springer_journal/measurement-bias-in-evanescent-wave-nano-velocimetry-due-to-tracer-PkMCSVbtvX
Publisher
Springer-Verlag
Copyright
Copyright © 2011 by Springer-Verlag
Subject
Engineering; Engineering Thermodynamics, Heat and Mass Transfer; Engineering Fluid Dynamics; Fluid- and Aerodynamics
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s00348-011-1188-x
Publisher site
See Article on Publisher Site

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial