Thermo-optical Properties of Nanofluids

dc.creatorOrtega, Maria Alejandra
dc.creatorRodriguez, Luis
dc.creatorCastillo, Jimmy
dc.creatorFernández, Alberto
dc.creatorEchevarría, Lorenzo
dc.date2013-07-23T18:09:31Z
dc.date2013-07-23T18:09:31Z
dc.date2008
dc.date.accessioned2022-10-28T00:54:20Z
dc.date.available2022-10-28T00:54:20Z
dc.identifierhttp://hdl.handle.net/10872/3993
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4938338
dc.descriptionAbstract. In this work, we report thermo-optical properties of nanofluids. Spherical gold nanoparticles obtained by laser ablation in condensed media were characterized using thermal lens spectroscopy in SDS-water solution pumping at 532 nm with a 10 ns pulsed laser-Nd-YAG system. Nanoparticles obtained by laser ablation were stabilized in the time by surfactants (Sodium Dodecyl-Sulfate or SDS) in different molar concentrations. The morphology and size of the gold nanoparticles were determined by transmission electron microscopy (TEM). The plasmonic resonance bands in gold nanoparticles are responsible of the light optical absorption of this wavelength. The position of the absorption maximum and width band in the UV-Visible spectra is given by the morphological characteristics of these systems. The thermo-optical constant such as thermal diffusion, thermal conductivity and dn/dT are functions of nanoparticles sizes and dielectric constant of the media. The theoretical model existents do not describe completely this relations because is not possible separate the contributions due to nanoparticles size, factor form and dielectric constant. The thermal lens signal obtained is also dependent of nanoparticles sizes. This methodology can be used in order to evaluate nanofluids and characterizing nanoparticles in different media. These results are expected to have an impact in bioimaging, biosensors and other technological applications such as cooler system.
dc.languageen_US
dc.publisherEl Springer
dc.relationVol. 991;
dc.subjectAtmospheric optics
dc.subjectcolor
dc.subjectdiffractive optics
dc.subjecteducation for optics
dc.subjectguided optics
dc.subjectholography and interferometry
dc.subjectlasers and quantum optics
dc.subjectmetamaterials
dc.subjectnonlinear optics
dc.subjectoptical instruments
dc.subjectoptical materials and applications
dc.subjectvision and radiometry
dc.titleThermo-optical Properties of Nanofluids
dc.typeArticle


Este ítem pertenece a la siguiente institución