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Article

3D Multi-Branched SnO2 Semiconductor Nanostructures as Optical Waveguides

1
Dipartimento di Fisica, Università di Pavia and INFN, Via Bassi 6, 27100 Pavia, Italy
2
Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy
3
Dipartimento di Matematica “F. Casorati”, Università di Pavia, Via Ferrata 1, 27100 Pavia, Italy
4
Dipartimento di Ingegneria dell’Informazione, Università di Brescia, via Branze 38, 25131 Brescia, Italy
*
Authors to whom correspondence should be addressed.
These authors contributed equally.
Present address: NEST, Scuola Normale Superiore and CNR-Istituto Nanoscienze, 56127 Pisa, Italy.
§
Present address: Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, 02150 Espoo, Finland.
Materials 2019, 12(19), 3148; https://doi.org/10.3390/ma12193148
Received: 25 August 2019 / Revised: 24 September 2019 / Accepted: 25 September 2019 / Published: 26 September 2019
(This article belongs to the Special Issue Semiconductor Nanowire Devices and Applications)
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. View Full-Text
Keywords: nano-optics; light scattering; nanowires; 3D multi-branched nanostructures; waveguiding effect in nanostructures; tin oxide nanostructure; SnO2 nano-optics; light scattering; nanowires; 3D multi-branched nanostructures; waveguiding effect in nanostructures; tin oxide nanostructure; SnO2
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MDPI and ACS Style

Rossella, F.; Bellani, V.; Tommasini, M.; Gianazza, U.; Comini, E.; Soldano, C. 3D Multi-Branched SnO2 Semiconductor Nanostructures as Optical Waveguides. Materials 2019, 12, 3148. https://doi.org/10.3390/ma12193148

AMA Style

Rossella F, Bellani V, Tommasini M, Gianazza U, Comini E, Soldano C. 3D Multi-Branched SnO2 Semiconductor Nanostructures as Optical Waveguides. Materials. 2019; 12(19):3148. https://doi.org/10.3390/ma12193148

Chicago/Turabian Style

Rossella, Francesco, Vittorio Bellani, Matteo Tommasini, Ugo Gianazza, Elisabetta Comini, and Caterina Soldano. 2019. "3D Multi-Branched SnO2 Semiconductor Nanostructures as Optical Waveguides" Materials 12, no. 19: 3148. https://doi.org/10.3390/ma12193148

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