Nonlinear optical response of platinum nanostructures and application for water detection in transformer oil

Mezher, M. H.; Wang, Chong; Zakaria, Rozalina

doi:10.1039/c6ra22367b

Cited by 15 publications

(3 citation statements)

References 30 publications

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“…На рис. 3 В пользу лазерного плавления Au/SiO 2 НС свидетельствуют также численные оценки достигаемых температур в рамках однотемпературной модели нагрева (OTM) [18]. Данная модель применима для наносекундных импульсов, так как за время одного импульса температура возбужденных горячих электронов и решеточной подсистемы успевает эффективно выровняться в каждый момент времени.…”

Section: нелинейно-оптические свойства образцовunclassified

“…Наночастицы (НЧ) благородных металлов проявляют уникальные нелинейно-оптические свойства благодаря особому механизму взаимодействия с лазерным излучением, связанному с существованием коллективных электронных возбуждений, называемых в литературе локализованными или поверхностными плазмонами, время жизни которых ограничено и определяется электронэлектронной (∼ 10 2 fs) и электрон-фононной релаксацией (до 10 2 ps) [1][2][3][4][5].…”

Section: Introductionunclassified

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Влияние лазерного разрушения на нелинейно-оптические свойства core/shell наностержней Au/SiO-=SUB=-2-=/SUB=-

Chevychelova¹,

Звягин²,

Ovchinnikov³

et al. 2021

Оптика И Спектроскопия

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The mechanisms of nonlinear optical response from ensembles of gold nanorods coated with a silicon dioxide (Au / SiO2 NRs) shell are analyzed. The Z-scan method under the action of 10 ns pulses of the second harmonic of a YAG: Nd3 + laser (532 nm) was used to find dependences characteristic of nonlinear absorption and a negative dynamic lens. It is shown that the bleaching of the colloidal solution, which intensifies with increasing pulse energy, is caused by laser destruction of the Au / SiO2 NRs, which occurs due to melting, which is confirmed by theoretical estimates. Negative nonlinear refraction is attributed to the response from spherical nanoparticles (Au NPs) formed upon laser destruction of NRs.

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Section: нелинейно-оптические свойства образцовunclassified

Section: Introductionunclassified

Влияние лазерного разрушения на нелинейно-оптические свойства core/shell наностержней Au/SiO-=SUB=-2-=/SUB=-

Chevychelova¹,

Звягин²,

Ovchinnikov³

et al. 2021

Оптика И Спектроскопия

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“…This microwave method produced high crystallinity and well dispersed Pt nanoparticles in a cubic shape with less than 10 nm size range, which resulted in a well-defined absorbance peak at 213 nm due to the plasmonic character. The investigation of their NLO responses has shown that the structures of Pt that related to surface plasmon resonance (SPR) as such provided a contribution to the NLO response [8].…”

Section: Introductionmentioning

confidence: 99%

The Study of Platinum Coated Carbon Nanotubes as Third-Order Nonlinear Optical Materials

Shah

Demon

Diauddin

et al. 2021

SSP

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Platinum-multiwall carbon nanotubes (Pt-MWCNTs) was prepared through a chemical reduction and was characterized by using UV–Vis Spectrophotometer, Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy with Energy Dispersive X-Ray (FESEM/EDX) and Raman Spectroscopy. Through this chemical reduction, Pt ions were reduced by the addition of sodium dodecyl sulfate (SDS) and Pt was in-situ deposited on the exterior walls of MWCNTs. TEM and FESEM/EDX analyses have confirmed the presence of Pt on the surface of MWCNTs. From Raman Spectroscopy, the ID/IG of MWCNT is 0.66 while ID/IG of Pt-MWCNT is 0.71, showing that not much defects were resulted by the functionalization of Pt on the surface of MWCNT, while from UV-Vis spectra, Pt-MWCNT is found to absorb at about 265 nm due to the presence of Pt nanoparticles that caused a weak surface plasmon resonance (SPR) absorption in the UV region which will contribute to the NLR measurement. The resulted Pt-MWCNTs was then investigated its third-order nonlinearity response as suspension in water using continuous wave laser and z-scan measurement at 532 nm. Pt-MWCNT displays good transmittance profile and self-defocusing effect with excitation intensity is in order of 10-9 cm2/W. The presence of Pt on the surface of MWCNT has contributed to intrinsic properties and resulted in nonlinear refractive (NLR) effect. Thus, Pt-MWCNT is considered to possess significant third-order nonlinear responses considering its low Pt content and has potential in the development of photonics devices.

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Good optical limiting performance of platinum nanoparticles prepared by laser ablation in a water environment

et al. 2022

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Nonlinear optical response of platinum nanostructures and application for water detection in transformer oil

Abstract: We report the fabrication of platinum nanostructures on an ITO substrate (Pt-NSs).

Cited by 15 publications

References 30 publications

Влияние лазерного разрушения на нелинейно-оптические свойства core/shell наностержней Au/SiO-=SUB=-2-=/SUB=-

Влияние лазерного разрушения на нелинейно-оптические свойства core/shell наностержней Au/SiO-=SUB=-2-=/SUB=-

The Study of Platinum Coated Carbon Nanotubes as Third-Order Nonlinear Optical Materials

Good optical limiting performance of platinum nanoparticles prepared by laser ablation in a water environment

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