Nano-shaping of gold particles on silicon carbide substrate from solid-state to liquid-state dewetting

Data di pubblicazione: 22 Feb 2021

RivistaFonte dati: OPENALEXTipo OpenAlex: articleOpen Access
Autori: Maria Grazia Grimaldi, Francesco Ruffino, M. G. Grimaldi

This work reports on the effect of annealing temperature on the size, shape and wetting of particles obtained on 4H-SiC substrate by the dewetting process of a deposited nanoscale-thick Au film, with focus on the difference between solid-state dewetting (below Au melting temperature) and liquid-state dewetting (above Au melting temperature). After depositing nanoscale-thick Au film on the SiC substrate, annealings are perfomed so to induce the solid-state or liquid-state dewetting process of the film with the consequent formation of particles. Plan-view and cross-view scanning electron microscopy analyses are carried out to quantify the evolution of the average planar size and vertical size of the particles and of the average contact angle of the particles to the SiC surface versus the annealing temperature. These analyses allow us to extract quantitative information on the wetting behaviour of the particles on the SiC surface by calculating the adhesion work versus the annealing temperature. Energy dispersive x-ray analyses are, also, performed on the dewetted particles to analyze their composition in the various annealing conditions. Overall, we set a general framework connecting process parameters to the nano-shape of the dewetted particles towards specific shape design for selected applications.

Fonte
Surfaces and Interfaces
Volume
24
Pagine
101041
Citazioni
8
ID archivio
c4923d567732e468ff4f51a6c692cb51
Riferimenti
Pages: 101041