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Related Experiment Video

Updated: May 21, 2026

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Published on: August 27, 2013

Interaction-free, automatic, on-chip fluid routing by surface acoustic waves.

Marco Travagliati¹, Giorgio De Simoni, Carlo Maria Lazzarini

¹NEST, Scuola Normale Superiore, Pisa, Italy. marco.travagliati@sns.it

|June 19, 2012

Summary

We developed a novel method for fluid routing using surface acoustic waves (SAW) without direct interaction. This breakthrough enables the creation of logic gates for instant liquid distribution.

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Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations

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Published on: August 21, 2018

Area of Science:

Physics
Engineering
Fluid Dynamics

Background:

Surface Acoustic Waves (SAW) are utilized in various microfluidic applications.
Controlling fluid flow in microfluidic devices often requires direct physical interaction or complex mechanisms.

Purpose of the Study:

To present the first scheme for integrated, automatic, and interaction-free fluid routing using SAW.
To demonstrate the potential for implementing logic gates based on instantaneous liquid distribution.

Main Methods:

Exploiting resonant coupling between travelling waves and stationary cavity modes.
Developing an integrated system for SAW-based fluid manipulation.

Main Results:

Successfully demonstrated a scheme for interaction-free SAW fluid routing.
Established the feasibility of SAW-driven logic gates for rapid liquid distribution.

Conclusions:

The proposed SAW routing scheme offers a novel approach for microfluidic control.
This technology paves the way for advanced microfluidic logic devices and systems.