Noncontinuous Super-Diffusive Dynamics of a Light-Activated Nanobottle Motor

Area of Science:

• Nanotechnology
• Materials Science
• Biomedical Engineering

Background:

• Developing advanced propulsion systems for micro- and nanodevices is crucial for targeted delivery and manipulation.
• Photothermal effects offer a promising route for remote, non-invasive actuation of nanomaterials.

Purpose of the Study:

• To report a novel carbonaceous nanobottle (CNB) motor capable of near-infrared (NIR) light-driven jet propulsion.
• To investigate the mechanism of propulsion and explore the control of motion using external light sources.

Main Methods:

• Fabrication of the carbonaceous nanobottle structure using soft-template-based polymerization.
• Utilizing near-infrared (NIR) light to induce photothermal effects for fluid ejection and propulsion.
• Computational simulation of physical fields (temperature, fluid velocity, pressure) to elucidate the propulsion mechanism.

Main Results:

• Demonstrated NIR light-driven jet propulsion of the CNB motor.
• Showcased modulation of motion (explosion, on/off, swing) by adjusting the NIR light source.
• Validated the propulsion mechanism through physical field simulations.

Conclusions:

• The NIR light-powered CNB motor provides fuel-free propulsion.
• External light offers precise control over swimming velocity.
• This technology holds significant potential for future biomedical applications, such as targeted drug delivery and minimally invasive procedures.