Orthogonal navigation of multiple visible-light-driven artificial microswimmers.

Area of Science:

• Nanotechnology and Materials Science
• Biomedical Engineering
• Chemical Engineering

Background:

• Nano/microswimmers are crucial for applications like targeted drug delivery and noninvasive surgery.
• Controlling multiple microswimmers independently is a significant challenge due to global actuation signals (magnetic/electric fields).

Purpose of the Study:

• To demonstrate a novel method for independent control of multiple microswimmers.
• To develop a flexible light-navigation system for advanced nanobot applications.

Main Methods:

• Photoelectrochemically driven nanotree microswimmers were engineered.
• Microswimmers were coded with distinct spectral responses using different dyes.
• Individual microswimmer navigation was achieved using light-based control.

Main Results:

• Successfully demonstrated independent control and navigation of individual microswimmers within a group.
• Showcased the ability to decouple microswimmer responses using spectrally coded dyes.
• Validated the flexibility and high-level controllability of the light-navigation method.

Conclusions:

• The dye-coded nanotree microswimmers offer a breakthrough in multi-agent microswimmer control.
• This technology enables precise, independent navigation essential for complex nanobot tasks.
• Paves the way for advanced nanobots in manufacturing, drug delivery, and surgery.