The controlled synthesis or fabrication of complex materials and devices from nanoparticles (NPs) is a major goal of modern nanoscience. However, controlled synthesis of “user-designed” architectures from colloidal NPs that extend over microscopic and mesoscopic length scales is challenging due to a lack of understanding of the growth mechanisms and parameters defining the final architecture. Argonne inventors have developed a method to manipulate nanoparticles using optical stimuli (e.g. lasers) to directly assemble and fuse nanoparticles into larger scale structures.
Opportunity & Solution
A need exists for a process for providing controlled irreversible assembly of stable NP structures with intricate shapes and arbitrary sizes. The Argonne process allows for fine-tuning of the forces which drive the assembly so as to enhance surface area and porosity of the resulting structures. Also, the process allows real time fabrication and manipulation of resulting assemblies, all using low power, and therefore less hazardous, energy sources.
The Argonne technology offers a flexible, scalabe, low-power method for manipulating and patterning nanoparticles into 2D and 3D structures.
Patterning micro- and nano-structures can broadly influence microelectronic device performance. The Argonne technology provides a versatile, alternative method for achieving these patterns.