Enhanced Thermal Lens Effect in Gold Nanoparticle-Doped Lyotropic Liquid Crystal by Nanoparticle Clustering Probed by Z-Scan Technique
Document title: Enhanced Thermal Lens Effect in Gold Nanoparticle-Doped Lyotropic Liquid Crystal by Nanoparticle Clustering Probed by Z-Scan Technique
Journal: Brazilian journal of physics
Database: PERIÓDICA
System number: 000390401
ISSN: 0103-9733
Authors: 1
2
3
1
Institutions: 1Universidade Estadual de Ponta Grossa, Departamento de Fisica, Ponta Grossa, Parana. Brasil
2Universidade Tecnologica Federal do Parana, Departamento de Fisica, Ponta Grossa, Parana. Brasil
3Instituto de Nanociencias de Aragón, Departamento de Física de Materia Condensada, Zaragoza, Aragón. España
Year:
Season: Abr
Volumen: 45
Number: 2
Pages: 213-218
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, analítico
English abstract t This work presents an experimental study of the thermal lens effect in Au nanoparticles-doped lyotropic liquid crystals under cw 532 nm optical excitation. Spherical Au nanoparticles of about 12 nm were prepared by Turkevich’s method, and the lyotropic liquid crystal was a ternary mixture of SDS, 1-DeOH, and water that exhibits an isotropic phase at room temperature. The lyotropic matrix induces aggregation of the nanoparticles, leading to a broad and a red-shifted surface plasmon resonance. The thermal nonlinear optical refraction coefficient n2 increases as a power of number density of nanoparticles, being possible to address this behavior to nanoparticle clustering
Disciplines: Física y astronomía
Keyword: Física de materia condensada,
Lentes térmicos,
Nanopartículas,
Oro,
Agrupamiento,
Cristal líquido,
Liotrópicos
Keyword: Physics and astronomy,
Condensed matter physics,
Thermal lens,
Clustering,
Nanoparticles,
Gold,
Liquid crystal,
Lyotropics
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