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Correction: Kang et al. Fluid Flow to Electricity: Capturing Flow-Induced Vibrations with Micro-Electromechanical-System-Based Piezoelectric Energy Harvester. <i>Micromachines</i> 2024, <i>15</i>, 581.

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Updated: Jun 25, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

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Published on: August 5, 2013

Low-Voltage High-Frequency Lamb-Wave-Driven Micromotors.

Zhaoxun Wang¹, Wei Wei¹, Menglun Zhang¹

¹The State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China.

|June 27, 2024

Summary

This summary is machine-generated.

This study introduces a novel Lamb-wave-driven micromotor for microfluidic actuation. It achieves high performance with lower voltage and smaller size compared to existing acoustic-wave-driven solutions.

Keywords:

Lamb wave high frequency micromotors

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Published on: January 28, 2022

Area of Science:

Microfluidics
Acoustic Actuation
MEMS

Background:

Acoustic-wave-driven micromotors offer advantages in energy density, miniaturization, and integration for microfluidic actuation.
Conventional surface acoustic wave (SAW) devices require higher driving voltages and larger footprints.

Purpose of the Study:

To propose and characterize a novel Lamb-wave-driven micromotor for microfluidic applications.
To demonstrate improved performance metrics, including lower driving voltage and reduced size, compared to existing technologies.

Main Methods:

Design of a ring-shaped Lamb wave actuator array with a rotor and fluid coupling layer.
Utilizing high-frequency (380 MHz) Lamb waves to generate acoustic streaming.
Incorporating reflectors and acoustic openings in actuators for wave energy control.
Employing electrodes for enhanced capacitance and impedance matching.
Experimental and simulation-based optimization of actuator array, rotor size, and coupling layer thickness.

Main Results:

The proposed micromotor achieves a maximum angular velocity of 250 rpm with a 5 mm rotor at an input voltage of 6 V.
The Lamb-wave-driven solution demonstrates significantly lower driving voltage and a smaller physical size than conventional SAW solutions.
Optimized configurations of actuator arrays, rotor dimensions, and liquid coupling layers were identified.

Conclusions:

The novel Lamb-wave-driven micromotor represents a new prototype for acoustic-wave-driven actuators.
This technology shows significant potential for advancing lab-on-a-chip applications requiring efficient microfluidic manipulation.