2D-patterning of self-assembled silver nanoisland films

Abstract

The paper is dedicated to the recently developed by the authors technique of silver nanoisland growth, allowing self-arrangement of 2D-patterns of nanoislands. The technique employs silver out-diffusion from ion-exchanged glass in the course of annealing in hydrogen. To modify the silver ion distribution in the exchanged soda-lime glass we included the thermal poling of the ion-exchanged glass with a profiled electrode as an intermediate stage of the process. The resulting consequence consists of three steps: (i) during the ion exchange of the glass in the AgxNa1-xNO3 (x = 0.01-0.15) melt we enrich the subsurface layer of the glass with silver ions; (ii) under the thermal poling, the electric field displaces these ions deeper into the glass under the 2D profiled anodic electrode, the displacement is smaller under the hollows in the electrode where the intensity of the field is minimal; (iii) annealing in a reducing atmosphere of hydrogen results in silver out-diffusion only in the regions corresponding to the electrode hollows, as a result silver forms nanoislands following the shape of the electrode. Varying the electrode and mode of processing allows governing the nanoisland size distribution and self-arrangement of the isolated single nanoislands, pairs, triples or groups of several nanoislands-so-called plasmonic molecules.

2D‐structuring of glasses via thermal poling: A short review

“…Local poling of the glass after the ion exchange results in local deepening of silver ions that prevents their reduction and diffusion to the glass surface. As a result, the nanoparticles grow only on the unpoled regions, and given surface distribution of the nanoparticles on the glass surface can be formed . An illustration of this is presented in Figure .…”

“…As a result, the nanoparticles grow only on the unpoled regions, and given surface distribution of the nanoparticles on the glass surface can be formed. 41 An illustration of this is presented in Figure 6. Besides, a special design of anodic electrode can provide growing of more complicated ensembles, like ordered pairs of nanoparticles, etc.…”

Resonant Optical Properties of Single Out-Diffused Silver Nanoislands

“…The images of the electrode and the array of the nanoislands grown on the glass slide surface are presented in Figure a,b. Additionally, this technique allows for easy multiplication of nanoisland structures via repeated use of the same electrode, while varying the electrode configuration and the mode of the processing in our experiments resulted in sets of silver nanoislands with different sizes and shapes as well as in dimers, trimers, and other groups of nanoparticles …”

“…Additionally, this technique allows for easy multiplication of nanoisland structures via repeated use of the same electrode, 31 while varying the electrode configuration and the mode of the processing in our experiments resulted in sets of silver nanoislands with different sizes and shapes as well as in dimers, trimers, and other groups of nanoparticles. 32 2.2. Single-Particle Dark-Field Spectroscopy Setup.…”

Selective electric field assisted dissolution as a technique for micro and nano structuring of metal thin films

“…Published by AIP Publishing. https://doi.org/10.1063/1.5042037 14 Micro-and nano-structured conductive layers are fabri- 15 cated using engraving techniques, photolithography, X-ray 16 lithography, or electron beam lithography, depending on the 17 required scale of the structure. [1][2][3][4] Some of these techniques 18 involve expensive equipment.…”