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Updated: May 3, 2026

Lensless Fluorescent Microscopy on a Chip

Lensless Fluorescent Microscopy on a Chip

Published on: August 17, 2011

Optical particle sorting on an optofluidic chip.

Kaelyn D Leake, Brian S Phillips, Thomas D Yuzvinsky

|February 12, 2014

Summary

This summary is machine-generated.

We demonstrate size-based sorting of microparticles and sub-micron particles using optical forces on an optofluidic chip. This method achieves high sorting efficiencies and tunable size selection, validated by excellent agreement with trajectory calculations.

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Area of Science:

Optofluidics
Nanotechnology
Biophysics

Background:

Accurate manipulation and separation of micro- and sub-micron particles are crucial in various scientific fields.
Existing methods for particle sorting often face limitations in efficiency, tunability, or complexity.

Purpose of the Study:

To develop and demonstrate a novel size-based particle sorting technique using optical forces on a planar optofluidic chip.
To investigate the influence of fluid flow and optical beam configurations on sorting performance.
To achieve high-efficiency and tunable particle size selection.

Main Methods:

Utilized a planar optofluidic chip with liquid-core waveguides.
Implemented two distinct configurations of fluid flow and optical beam directions.
Applied optical forces to manipulate and sort particles based on their size.
Compared experimental results with theoretical calculations of particle trajectories.

Main Results:

Achieved size-based sorting of micro- and sub-micron particles.
Demonstrated tunability in size selection by adjusting fluid flow and optical beam parameters.
Attained sorting efficiencies as high as 100%.
Observed excellent agreement between experimental data and calculated particle trajectories.

Conclusions:

The developed optofluidic chip effectively sorts particles by size using optical forces.
The demonstrated methods offer tunable control over particle selection.
The high sorting efficiencies and validated trajectories highlight the robustness of the technique for microparticle manipulation.