Challenges on optical printing of colloidal nanoparticles.

Ianina L Violi,Andrea V Bragas,Cecilia Zaza,Pavel Zemánek,Iván Díaz Nóblega,Lukáš Chvátal,María Y Paredes,Jorge Olmos-Trigo,Mariano Barella,Fernando D Stefani,Valeria R Pais,Luciana P Martinez,Julian Gargiulo,Marina V Gutiérrez,Alberto F Scarpettini,Juan José Sáenz,Emiliano Cortes

doi:10.1063/5.0078454

Abstract

While colloidal chemistry provides ways to obtain a great variety of nanoparticles with different shapes, sizes, material compositions, and surface functions, their controlled deposition and combination on arbitrary positions of substrates remain a considerable challenge. Over the last ten years, optical printing arose as a versatile method to achieve this purpose for different kinds of nanoparticles. In this article, we review the state of the art of optical printing of single nanoparticles and discuss its strengths, limitations, and future perspectives by focusing on four main challenges: printing accuracy, resolution, selectivity, and nanoparticle photostability.

Highlights

We review the state of the art of optical printing of single nanoparticles and discuss its strengths, limitations, and future perspectives, by focusing on four main challenges: printing accuracy, resolution, selectivity, and nanoparticles photostability
Colloidal chemistry allows the preparation of nanoparticles (NPs) with different compositions, sizes, and morphologies, which in turn define their unique physical and chemical properties that are impossible to obtain in bulk materials
Optical printing is a nanofabrication technique that allows the capturing of individual NPs from a colloidal suspension and their positioning, orientation and combination into arbitrary patterns on a variety of substrates

Summary

Introduction

Colloidal chemistry allows the preparation of nanoparticles (NPs) with different compositions, sizes, and morphologies, which in turn define their unique physical and chemical properties that are impossible to obtain in bulk materials. As expected from the balance between the optical axial force and the DLVO interaction with the substrate, it was not possible to print particles below a certain threshold of laser power Pth (Fth, Figure 2b).

Results

Conclusion