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Related Experiment Video

Updated: May 8, 2026

Flow-assisted Dielectrophoresis: A Low Cost Method for the Fabrication of High Performance Solution-processable Nanowire Devices

Flow-assisted Dielectrophoresis: A Low Cost Method for the Fabrication of High Performance Solution-processable Nanowire Devices

Published on: December 7, 2017

Flow-based solution-liquid-solid nanowire synthesis.

Rawiwan Laocharoensuk¹, Kumaranand Palaniappan, Nickolaus A Smith

¹Materials Physics & Applications Division, Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.

Nature Nanotechnology

|August 20, 2013

Summary

This summary is machine-generated.

The solution-liquid-solid (SLS) method for semiconductor nanowire synthesis is now a continuous process using microfluidics. This flow-SLS technique allows for detailed mechanistic studies and the creation of advanced heterostructured nanowires.

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Last Updated: May 8, 2026

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Area of Science:

Materials Science
Nanotechnology
Chemical Engineering

Background:

The solution-liquid-solid (SLS) method is established for synthesizing high-quality semiconductor nanomaterials.
SLS is mechanistically similar to vapor-liquid-solid (VLS) growth, utilizing molten metal catalysts.
Current SLS methods lack dynamic control over reactant introduction and byproduct removal, unlike VLS.

Purpose of the Study:

To adapt the SLS method for semiconductor nanowire synthesis into a continuous process.
To enable detailed mechanistic investigations of solution-phase nanowire growth.
To synthesize axially heterostructured semiconductor nanowires with ultrasmall diameters.

Main Methods:

Development of a microfluidic reactor for continuous flow-based SLS (flow-SLS) synthesis.
Utilizing molten metal nanoparticles as catalysts for nucleation and elongation.
Controlled introduction of chemical precursors and removal of by-products within the microfluidic system.

Main Results:

Demonstrated transformation of batch SLS into a continuous flow-SLS technique.
Enabled slowed-down synthesis for capturing mechanistic details of nanowire growth.
Successfully synthesized axially heterostructured semiconductor nanowires with diameters below 10 nm.

Conclusions:

The flow-SLS platform offers enhanced synthetic control over semiconductor nanowire fabrication.
This continuous method provides new opportunities for understanding and optimizing solution-phase nanomaterial growth.
Flow-SLS is a promising technique for producing advanced nanomaterials for technological applications.