Recent advances in stimulus-assisted nanoprecipitation for nanoparticle synthesis

TL;DR

This review discusses recent progress in stimulus-assisted nanoprecipitation, highlighting how external triggers combined with advanced mixing techniques enable precise control over nanoparticle properties for diverse applications.

Contribution

It synthesizes recent mechanistic insights and technological advances in stimulus-assisted nanoprecipitation, proposing future development directions for nanomaterial synthesis.

Findings

Stimuli like ultrasonic, electrical, and photonic methods influence nucleation and growth.

Integration with modern reactors enhances control over nanoparticle features.

Emerging models and data-driven approaches are expanding design capabilities.

Abstract

Nanoprecipitation, the rapid solvent-displacement route to nanoscale phase separation, has matured from a simple batch operation into a versatile platform for nanomaterial synthesis. This review synthesizes recent progress in stimulus-assisted nanoprecipitation, wherein externally applied triggers (ultrasonic, electrical, supergravity, thermal, chemical, and photonic/other stimuli) are integrated with contemporary mixing technologies (batch, flash, microfluidic, membrane and high-shear reactors) to decouple and selectively control over nucleation, growth kinetics, and assembly processes. These methods allow for the precise tuning of the size, morphology, stability and functionality of nanoparticles (NPs), thereby broadening their applications in drug delivery, catalysis and materials science. We distill mechanistic principles by which each stimulus alters local supersaturation, chain mobility, interfacial instabilities, or droplet/film microreactor dynamics, and compare advantages and limitations by surveying research works from recent years. We also explore the potential development trends of multiscale coupling models, design rules for stimulus-compatible continuous reactors, and adoption of data-driven optimization frameworks to expand the capabilities of nanoprecipitation for advanced nanomaterial design.