Related Experiment Video
Updated: Nov 10, 2025
08:04
Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating
Published on: February 20, 2016
13.9K
Long-range optofluidic control with plasmon heating.
B Ciraulo1,2, J Garcia-Guirado1,2, I de Miguel1
1ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, Castelldefels (Barcelona), Spain.
Nature Communications
|April 1, 2021
Summary
We developed an optofluidic platform using light to control microfluidic devices. This innovative approach enables precise manipulation of fluid dynamics and particle movement at the microscale for advanced lab-on-a-chip applications.
Area of Science:
- Optofluidics
- Microfluidics
- Nanotechnology
Background:
- Controlling fluids in microfluidic devices is challenging due to bulky external equipment.
- Light-based fluid manipulation is desired for lab-on-a-chip systems but complex thermal phenomena hinder progress.
Purpose of the Study:
- To develop an innovative optofluidic platform for precise microfluidic control.
- To investigate and differentiate thermal fluid dynamic phenomena (thermophoresis, thermo-osmosis, convection, radiation pressure).
- To achieve long-range transport of particles and fluids using localized thermal perturbations.
Main Methods:
- Combined digital holographic microscopy with advanced thermoplasmonics.
- Implemented a comprehensive parameter study (sample geometry, temperature, light fluence, heat source size).
- Demonstrated all-optical control of microfluidic devices.
Main Results:
- Identified distinct contributions of thermophoresis, thermo-osmosis, convection, and radiation pressure.
- Achieved millimeter-scale changes in particle and fluid dynamics from microscale thermal perturbations.
- Showcased an integrated and reconfigurable all-optical control strategy.
Conclusions:
- The developed optofluidic platform enables effective all-optical control of microfluidic systems.
- This technology overcomes limitations of traditional fluid controllers, paving the way for new fluid actuation strategies.
- Offers a versatile tool for multiscale and multiparameter studies in microfluidics.
