Recent microfluidic advances in submicron to nanoparticle manipulation and separation.

Area of Science:

• Nanotechnology
• Microfluidics
• Analytical Chemistry

Background:

• Conventional nanoparticle manipulation methods (e.g., ultracentrifugation, chromatography) face limitations including high cost, low resolution, and potential damage to sensitive particles.
• Microfluidics enables precise control of fluid dynamics in microscale channels, offering enhanced resolution and efficiency for nanoparticle manipulation.
• Accurate manipulation and separation of submicron and nanoparticles are critical for diverse applications in chemistry, biology, medicine, and environmental science.

Purpose of the Study:

• To comprehensively review the latest advancements in microfluidic technologies for submicron and nanoparticle manipulation and separation.
• To compare microfluidic techniques with conventional methods, highlighting advantages in resolution, purity, and particle integrity.
• To discuss the physics, device design, working mechanisms, applications, and future outlook of microfluidic approaches.

Main Methods:

• Classification of microfluidic techniques into active, passive, and hybrid approaches.
• Detailed elaboration on the principles, device design, and working mechanisms of each microfluidic category.
• Benchmarking of microfluidic techniques against traditional nanoparticle manipulation methods.

Main Results:

• Microfluidic technologies demonstrate superior resolution and efficiency compared to conventional techniques for nanoparticle separation.
• Active, passive, and hybrid microfluidic approaches offer distinct advantages for specific particle manipulation tasks.
• A summary of seven standard post-separation detection techniques for nanoparticles is provided.

Conclusions:

• Microfluidics represents a significant advancement over traditional methods for nanoparticle manipulation and separation.
• Continued development in microfluidic technology promises further improvements in precision, efficiency, and application scope.
• Addressing current challenges in microfluidics is key to unlocking its full potential in nanoscale science and technology.