Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Sizing fine particles with the phase Doppler interferometric technique.

Applied optics·2010
Same author

Response characteristics of the phase Doppler particle analyzer for sizing spherical particles larger than the light wavelength.

Applied optics·2010
Same author

Method for measuring the size and velocity of spheres by dual-beam light-scatter interferometry.

Applied optics·2010
Same author

Phase-Doppler interferometry with probe-to-droplet size ratios less than unity. II. Application of the technique.

Applied optics·2008

Related Experiment Video

Updated: Jul 6, 2026

A Protocol for Real-time 3D Single Particle Tracking
10:16

A Protocol for Real-time 3D Single Particle Tracking

Published on: January 3, 2018

Phase-doppler interferometry with probe-to-droplet size ratios less than unity. I. Trajectory errors.

P A Strakey1, D G Talley, S V Sankar

  • 1US Air Force Research Laboratory, AFRLyPRSA, 10 East Saturn Boulevard, Edwards Air Force Base, California 93524, USA. peter_strakey@ple.af.mil

Applied Optics
|March 20, 2008
PubMed
Summary

Phase-Doppler interferometry effectively measures droplet size and velocity by minimizing trajectory errors. This technique uses a validation scheme and scattered light intensity for accurate probe volume characterization and mass flux measurements.

More Related Videos

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
10:39

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics

Published on: August 5, 2020

Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Related Experiment Videos

Last Updated: Jul 6, 2026

A Protocol for Real-time 3D Single Particle Tracking
10:16

A Protocol for Real-time 3D Single Particle Tracking

Published on: January 3, 2018

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
10:39

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics

Published on: August 5, 2020

Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Area of Science:

  • Fluid Dynamics
  • Optical Measurement Techniques
  • Particle Characterization

Background:

  • Phase-Doppler interferometry (PDI) is a common technique for measuring droplet size and velocity.
  • Trajectory-dependent scattering errors can affect the accuracy of PDI measurements.
  • Accurate characterization of the probe volume is crucial for reliable results.

Purpose of the Study:

  • To develop and validate a method for eliminating trajectory-dependent scattering errors in PDI.
  • To quantitatively assess trajectory errors using optical models.
  • To establish a robust method for determining probe volume cross-sectional area for mass flux measurements.

Main Methods:

  • Coupling PDI with a phase-ratio and intensity-validation scheme.
  • Utilizing ray-tracing and geometric-optics models for error analysis.
  • Performing stochastic trajectory calculations to demonstrate error types and magnitudes.
  • Conducting measurements with monodispersed water droplet streams and glass beads.

Main Results:

  • The phase-ratio and intensity-validation scheme effectively eliminates trajectory-dependent scattering errors.
  • Model calculations accurately predicted trajectory errors.
  • Scattered-light intensity provides a robust method for determining probe cross-sectional area.
  • Measurements validated the model calculations and characterized the probe volume.

Conclusions:

  • The validated PDI technique with the proposed scheme offers accurate droplet size and velocity measurements.
  • The method enhances the reliability of PDI by mitigating trajectory errors.
  • Accurate probe volume determination using scattered-light intensity is critical for precise mass flux calculations.