Ordering Ag nanowire arrays by spontaneous spreading of volatile droplet on solid surface

Abstract

Large-area Ag nanowires are ordered by spontaneous spreading of volatile droplet on a wettable solid surface. Compared with other nanowires orientation methods, radial shaped oriented Ag nanowires in a large ring region are obtained in an extremely short time. Furthermore, the radial shaped oriented Ag nanowires are transferred and aligned into one direction. Based on the hydrodynamics, the coactions among the microfluid, gravity effect and the adhesion of substrate on the orientation of the Ag nanowires are clearly revealed. This spreading method opens an efficient way for extreme economic, efficient and “green” way for commercial producing ordered nanowire arrays.

Low Temperature RF-Plasma Initiated Rapid and Highly Ordered Fracture on Ag Nanowires

“…AgNWs were deposited on Si substrates (samples) as thin circle layers ("coffee rings") due to the natural spreading and drying of their ethanol suspension [16,17], as shown in Figure 1a. From the element analysis, the spreading treatment of ethanol suspension AgNWs deposited on Si substrate is "a clean way" without introducing impurities, as shown in Figure 1b.…”

“…This element analysis was exerted on the sample in Figure 1a. As a result, AgNWs adhered on Si substrate are mainly contributed by weak Van der Waals forces [16]. Then, the prepared samples were put in a chemical vapour deposition and treated by RF plasma, as shown in Figure 1c.…”

A Deformable and Highly Robust Ethyl Cellulose Transparent Conductor with a Scalable Silver Nanowires Bundle Micromesh

“…However, the spontaneous driving force generated from capillary flow is limited only to drive the micro/nanoparticles rather than the heavier nanowires . Some efforts have been attempted to achieve the ordered arrangement of AgNWs by utilizing the surface tension difference, such that AgNWs (of diameter 200 nm and length 30 µm) can be ordered by spontaneous spreading of volatile droplet (ethanol) on the glass/silicon surfaces . Recently, smaller droplets (diameter, 0.9–4.25 µm) of AgNWs (of diameter 40 nm and length 25 ± 5 µm) have been proved to self‐assemble into single‐nanowire rings by the aid of compressive force of liquid droplet, but it is ineffective upon further increasing the droplet size .…”

Silver Nanowire‐Templated Molecular Nanopatterning and Nanoparticle Assembly for Surface‐Enhanced Raman Scattering

“…Moreover, the length and diameter of the AgNWs can be easily tuned by varying the parameters during synthesis. Due to the easy preparation and convenient tuning of the AgNW morphology, it could also be used in many other applications …”

“…The Raman enhancement could be further increased by extending the immersion period in AuNPs colloid or re‐adsorbing another layer of nanoparticles. The average enhancement factor (EF) was calculated (The details of the EF calculation was already described in our previous report) as 2.2×10 5 for the Raman band of PATP (typical spectrum shown in Figure c) at 1076 cm −1 , by using this equation , whereas and represent the number of excited molecules in bulk Raman and SERS measurements respectively, and and represent the Raman intensities in bulk and SERS measurements respectively. This EF is slightly smaller than the reported one, which is probably due to the limited width of the line pattern.…”