Acoustic actuation of bioinspired microswimmers

Area of Science:

• Biomimetics and Microfluidics
• Acoustic Engineering

Background:

• Bioinspired microswimmers offer potential for targeted delivery and manipulation in microfluidic systems.
• Controlling microswimmer motion remotely and efficiently remains a significant challenge.

Purpose of the Study:

• To experimentally demonstrate acoustic actuation for bioinspired microswimmers.
• To investigate the relationship between acoustic excitation and microswimmer movement (linear/rotary).
• To explore methods for tuning microswimmer speed using electrical parameters.

Main Methods:

• In situ fabrication of microswimmers within a microchannel.
• Application of acoustic excitation using a transducer.
• Varying voltage amplitude to control actuation frequency and intensity.
• Observation of microswimmer locomotion based on design and actuation parameters.

Main Results:

• Successful demonstration of acoustic actuation for microswimmer locomotion.
• Oscillation of the microswimmer flagellum upon acoustic excitation.
• Generation of linear or rotary movement contingent on microswimmer design.
• Tunable speed of microswimmers by adjusting acoustic transducer voltage amplitude.

Conclusions:

• Acoustic actuation provides a viable method for controlling bioinspired microswimmers.
• The fabrication and remote actuation are simple, suggesting feasibility for biomedical applications.
• This technique holds promise for developing advanced micro-robotic systems for medical use.