TY - JOUR
T1 - Optical absorptive response of platinum doped TiO 2 transparent thin films with Au nanoparticles
AU - Campos-López, J. P.
AU - Torres-Torres, C.
AU - Trejo-Valdez, M.
AU - Torres-Torres, D.
AU - Urriolagoitia-Sosa, G.
AU - Hernández-Gómez, L. H.
AU - Urriolagoitia-Calderón, G.
N1 - Funding Information:
We kindly acknowledge the financial support from IPN through grant SIP ; from CONACyT through grant nos. 82708 and 80024 , from ICyT -DF through grant nos. PIUTE 10-129 and 10-82 , and also from COFAA-IPN . The authors are also thankful to the Central Microscopy facilities of the Centro de Nanociencias y MicroNanotecnologías del IPN, from CINVESTAV-IPN-Qro., from the Nonlinear Optics Lab at IFUNAM and for the technical support from the Laboratory of Catalysis and Materials at ESIQIE, IPN. The authors wish to acknowledge the technical assistance of Dr. H. Martínez-Gutiérrez.
PY - 2012/8
Y1 - 2012/8
N2 - In this paper different optical absorption bands associated to the surface plasmon of resonance of a nanoparticle containing sample were achieved by a sol-gel processing route. We study the linear and nonlinear optical absorptive properties of a titanium dioxide thin film with superficial Au nanoparticles. A chaotic behavior related with modification of the optical absorption by a multi-wave mixing interaction was investigated. A characteristic Mandelbrot group tendency was used to describe the possibility of a resulting absorptive response. The analysis of the observations showed that an excitation at 488 nm wavelength in the nanocomposite can originate a measurable change in the absorptive properties for the propagation of optical beams at 532 nm and at 650 nm. However, the inhibition of this condition exhibited by the film can be obtained by the shift of its plasmonic response. It is considered that the near resonance participation of the Au nanoparticles is mainly responsible for avoiding the photodarkening contribution to the optical absorptive response of the sol-gel TiO 2 film with embedded Au nanoparticles. Potential applications of the samples are proposed for development of optical sensors or transparent thin films for filtering functions.
AB - In this paper different optical absorption bands associated to the surface plasmon of resonance of a nanoparticle containing sample were achieved by a sol-gel processing route. We study the linear and nonlinear optical absorptive properties of a titanium dioxide thin film with superficial Au nanoparticles. A chaotic behavior related with modification of the optical absorption by a multi-wave mixing interaction was investigated. A characteristic Mandelbrot group tendency was used to describe the possibility of a resulting absorptive response. The analysis of the observations showed that an excitation at 488 nm wavelength in the nanocomposite can originate a measurable change in the absorptive properties for the propagation of optical beams at 532 nm and at 650 nm. However, the inhibition of this condition exhibited by the film can be obtained by the shift of its plasmonic response. It is considered that the near resonance participation of the Au nanoparticles is mainly responsible for avoiding the photodarkening contribution to the optical absorptive response of the sol-gel TiO 2 film with embedded Au nanoparticles. Potential applications of the samples are proposed for development of optical sensors or transparent thin films for filtering functions.
KW - Light sensitive materials
KW - Nanostructures
KW - Optical sensing
KW - Thin films
UR - http://www.scopus.com/inward/record.url?scp=84863324328&partnerID=8YFLogxK
U2 - 10.1016/j.mssp.2012.02.009
DO - 10.1016/j.mssp.2012.02.009
M3 - Artículo
SN - 1369-8001
VL - 15
SP - 421
EP - 427
JO - Materials Science in Semiconductor Processing
JF - Materials Science in Semiconductor Processing
IS - 4
ER -