Formation of nanoflowers: Au and Ni silicide cores surrounded by SiO_x branches

• Feitao Li,
• Siyao Wan,
• Dong Wang and
• Peter Schaaf

Beilstein J. Nanotechnol. 2023, 14, 133–140, doi:10.3762/bjnano.14.14

• to the strong ability of Au to enhance SiO2 decomposition, and nanoflowers with less difference in their branches can be observed across the whole sample. Keywords: Au/Ni bilayers; dewetting; vapor–liquid–solid; SiO2 decomposition; SiOx nanowires; Introduction Substantial efforts have been devoted

• and surrounding SiOx nanowires (NWs) show a significant enhancement of the photoluminescence (PL) emission compared with pure SiOx NWs due to the coupling effect between the local surface plasmon resonance (LSPR) of Au nanoparticles and the PL emission of SiOx [2]. Similar Au–SiOx nanoflowers have

• concentrations, which means that EDS measured only substrate and branch parts. In accordance with previous works [3][4], the nanoflowers can be identified as heterostructures with a core particle and surrounding SiOx nanowires. The core particle is made of segregated Ni silicide and Au, which can be proved by