Nano-Micro Letters

Fabrication and Characterization of Au Nanoparticle-aggregated Nanowires by Using Nanomeniscus-induced Colloidal Stacking Method

Sangmin An1,2 ,Wonho Jhe1,*

Abstract
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Nano-Micro Letters, , Volume 7, Issue 1, pp 27-34

First Online: October 25, 2014 (Article)

DOI:10.1007/s40820-014-0015-3

 

Abstract

 


Proposed system and result. a Schematic of fabrication process of Au nanoparticle-aggregated (ANA) nanowires (NWs) with colloidal stacking method. (1) When the nanopipette tip approaches the substrate, the nanomeniscus-induced ejection of the 2 nm Au particle solutions occurs at a low voltage bias (~10 V) in ambient conditions (2) with formation of liquid nanochannel. (3) The colloidal stacked ANA-NW forms as the tip retracts in 3D space while the liquid solution evaporates. b SEM image of the 100 nm (scale bar) diameter ANA-NW.

We fabricate and characterize Au nanoparticle-aggregated nanowires by using the nano meniscus-induced colloidal stacking method. The Au nanoparticle solution ejects with guidance of nanopipette/quartz tuning fork-based atomic force microscope in ambient conditions, and the stacking particles form Au nanoparticle-aggregated nanowire while the nozzle retracts from the surface. Their mechanical properties with relatively low elastic modulus are in situ investigated by using the same apparatus.

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