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 Experiment Videos

Optical force field mapping in microdevices.

Gregor Knöner1, Adrian Ratnapala, Timo A Nieminen

  • 1Centre for Biophotonics and Laser Science, School of Physical Sciences, The University of Queensland, Brisbane 4072, QLD, Australia. knoener@physics.uq.edu.au

Lab on a Chip
|January 5, 2007
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Publisher Correction: Scattering of Sculpted Light in Intact Brain Tissue, with implications for Optogenetics.

Scientific reports·2025
Same author

Deep learning in light-matter interactions.

Nanophotonics (Berlin, Germany)·2024
Same author

Shining Light in Mechanobiology: Optical Tweezers, Scissors, and Beyond.

ACS photonics·2024
Same author

Tired and stressed: direct holographic quasi-static stretching of aging echinocytes and discocytes in plasma using optical tweezers [Invited].

Biomedical optics express·2024
Same author

Thermography of the superfluid transition in a strongly interacting Fermi gas.

Science (New York, N.Y.)·2024
Same author

Roadmap on Deep Learning for Microscopy.

ArXiv·2023
Same journal

Microfluidic rare cell analysis beyond counting: workflow design from enrichment to multi-omics.

Lab on a chip·2026
Same journal

A sperm racetrack to separate sperm by swim speed.

Lab on a chip·2026
Same journal

Controlled encapsulation and droplet size prediction in two-step microfluidic double emulsions.

Lab on a chip·2026
Same journal

A particulate blood-mimicking fluid with physiological biconcave geometry for microscale hemorheology.

Lab on a chip·2026
Same journal

Multicellular sensor arrays fabricated by capillary stamping for pattern-based odor discrimination.

Lab on a chip·2026
Same journal

A real-time microfluidic surveillance system for multiplex detection of heavy metal contamination in wastewater.

Lab on a chip·2026
See all related articles

We developed a method to map microscopic optical forces using a lensed fiber. This technique characterizes forces for particle manipulation, demonstrating potential for guiding and sorting applications.

Area of Science:

  • Optics
  • Microfluidics
  • Nanotechnology

Background:

  • Optical forces are crucial for manipulating microscopic particles.
  • Characterizing these forces precisely is essential for developing advanced optical tools.
  • Lensed fibers offer a compact and efficient way to generate optical fields.

Purpose of the Study:

  • To present a novel method for characterizing microscopic optical force fields.
  • To quantify the optical forces generated by a lensed fiber in a microfluidic environment.
  • To demonstrate the potential of lensed fibers for particle manipulation.

Main Methods:

  • Generating two-dimensional vector force maps by measuring optical forces on a probe particle.
  • Scanning the probe particle across a grid of positions within a liquid-filled microdevice.

Related Experiment Videos

  • Utilizing a lensed fiber to create the optical force field.

    • Main Results:

    • Measured transverse gradient and axial scattering forces on the order of 2 pN per 10 mW laser power.
    • Observed force field characteristics remained constant over a significant axial range (>35 microm).
    • Demonstrated propulsion of a small particle at a constant velocity of 200 microm s(-1).

    Conclusions:

    • The developed method effectively characterizes microscopic optical force fields.
    • Lensed fibers generate stable and predictable optical forces suitable for particle guiding and sorting.
    • The findings support the future application of lensed fibers in microparticle manipulation technologies.