Nanoengineering a library of metallic nanostructures using a single microfluidic reactor

Area of Science:

• Materials Science
• Nanotechnology
• Chemical Engineering

Background:

• Conventional batch synthesis methods for metallic nanostructures are often slow and limited in scope.
• There is a need for advanced techniques to produce a wider variety of complex nanostructures efficiently.

Purpose of the Study:

• To demonstrate the capability of microfluidic synthesis in microreactors for producing diverse metallic nanostructures.
• To highlight the advantages of this technique over traditional batch methods.
• To report the successful synthesis of novel nanostructures.

Main Methods:

• Utilizing a microfluidic reactor with controlled flow patterns and synthesis parameters.
• Employing microfabrication techniques for reactor design.
• Varying synthesis conditions to achieve specific nanostructure morphologies.

Main Results:

• Successfully synthesized a wide library of metallic nanostructures, including monometallic, bimetallic, anisotropic, and heterostructures.
• Achieved faster and more scalable synthesis compared to conventional batch technologies.
• Reported the novel synthesis of Pt-Ru, Pt-Ni, and Pt-Co nanodendrites, Pt-Pd heterostructures, Ag-Pd core-shell nanoparticles, Au-Pd nanodumbbells, and Au-Pd nanosheets.

Conclusions:

• Microfluidic synthesis in microfabricated reactors is a powerful and versatile platform for metallic nanostructure fabrication.
• This technique enables rapid, scalable, and precise control over nanostructure synthesis, leading to the creation of previously inaccessible materials.