3D Multi-Branched SnO2 Semiconductor Nanostructures as Optical Waveguides

Materials

Matteo Tommasini¹  Francesco Rossella²  Vittorio Bellani²  Caterina Soldano³  Elisabetta Comini³  Ugo Gianazza⁴ 

[1] Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy;Dipartimento di Fisica, Università di Pavia and INFN, Via Bassi 6, 27100 Pavia, Italy;Dipartimento di Ingegneria dell’Informazione, Università di Brescia, via Branze 38, 25131 Brescia, Italy;Dipartimento di Matematica “F. Casorati”, Università di Pavia, Via Ferrata 1, 27100 Pavia, Italy;

关键词: nano-optics;    light scattering;    nanowires;    3d multi-branched nanostructures;    waveguiding effect in nanostructures;    tin oxide nanostructure;    sno₂;   

DOI  :  10.3390/ma12193148

来源: DOAJ

【 摘 要 】

Nanostructures with complex geometry have gathered interest recently due to some unusual and exotic properties associated with both their shape and material. 3D multi-branched SnO₂ one-dimensional nanostructrures, characterized by a “node”—i.e., the location where two or more branches originate, are the ideal platform to distribute signals of different natures. In this work, we study how this particular geometrical configuration affects light propagation when a light source (i.e., laser) is focused onto it. Combining scanning electron microscopy (SEM) and optical analysis along with Raman and Rayleigh scattering upon illumination, we were able to understand, in more detail, the mechanism behind the light-coupling occurring at the node. Our experimental findings show that multi-branched semiconductor 1D structures have great potential as optically active nanostructures with waveguiding properties, thus paving the way for their application as novel building blocks for optical communication networks.

【 授权许可】

Unknown