SYNTHESIS, CHARACTERIZATION AND NONLINEAR OPTICAL PROPERTIES OF Si/PVA-PEG NANOCOMPOSITES

KANNAN, K.; AGILAN, S.; MUTHUKUMARASAMY, N.; VIJAYAKUMAR, K.; VINITHA, G.

doi:10.15251/jor.2020.166.355

Cited by 4 publications

(1 citation statement)

References 19 publications

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“…Therefore, the film morphology becomes relatively smoother with the reduction of the effective surface area. [25][26][27] In the case of thermally oxidized copper thin films, a uniform granular pattern has been observed for all the samples, as shown in Fig. 2.…”

Section: Resultsmentioning

confidence: 79%

Room Temperature Detection of Chlorpyrifos Using Thermally Oxidized Manganese and Copper Thin Films

Pattnaik

Ghosh²,

Sahoo³

et al. 2023

ECS J. Solid State Sci. Technol.

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Real-time monitoring of Chlorfyrifos is necessary for its safe application due to its toxicity, even at the residue level. In this work, an attempt has been carried out to detect chlorpyrifos at room temperature using thermally oxidized manganese and copper thin films. Thermal oxidation of thin films has been carried out under air ambient at different temperatures ranging from 400 to 550°C for manganese and 500 to 800°C for copper thin films. Morphological investigation depicts nano bar-like morphology and irregular-sized clusters for various oxidation temperatures of manganese oxide thin films, and granular-like morphology with an increase in grain size has been observed for increasing oxidation temperature. Structural investigation using the X-ray diffraction depicts the evolution of various phases of manganese oxide thin film and a single monoclinic phase for copper oxide thin film. The root-mean-square roughness of the manganese and copper film was found to vary differently with the rise in oxidation temperature. Copper oxide thin films have shown higher chlorpyrifos sensing response with sensitivity than thermally oxidized manganese thin films better sensing response towards chlorpyrifos. The sensitivity at room temperature is found to be 30 and 250 for manganese oxide and copper oxide thin films.

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Section: Resultsmentioning

confidence: 79%

Room Temperature Detection of Chlorpyrifos Using Thermally Oxidized Manganese and Copper Thin Films

Pattnaik

Ghosh²,

Sahoo³

et al. 2023

ECS J. Solid State Sci. Technol.

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Influence of Eu3+ dopant on the third order nonlinear optical properties of PbO/PMMA nanocomposites

Suresh¹,

Dineshbabu

Shanmugam

et al. 2023

Materials Research Innovations

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Third order nonlinearity and optical power limiting studies of PS/ZnO nanocomposite foils for photonic applications

Barala

Maidur²,

Mohan

et al. 2022

Phys. Scr.

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The present work focuses on the preparation of Polystyrene (PS) and PS/ZnO nanocomposite foils by solution casting method and study their structural and nonlinear optical (NLO) characterizations. The Zinc Oxide (ZnO) nanoparticles were synthesized by Sol-gel method. Structural analysis of the prepared nanocomposite foils was carried out by X-ray diffraction (XRD) with an estimated average crystallite size of 27.33 nm. UV-Vis-NIR spectra reveal that the nanocomposite foils are transparent in the visible region. FESEM micrographs show the surface morphology of the prepared nanocomposite foils. Energy Dispersive X-Ray Spectroscopy (EDX) of the prepared foils confirmed the compositional and spatial distribution of the elements. The NLO properties such as nonlinear absorption coefficient (β), nonlinear index of refraction (n2), and third-order nonlinear susceptibility (χ⁽³⁾) were investigated by Z-scan technique at a wavelength of 532 nm and 200 mW with field intensity I_0=5.43 KW cm^(-2).The values of β were found to bein the order of ~ 10-7 cm/W, n2 in the order of ~10-12 cm2/W and χ⁽³⁾ in the range 4.99 x 10-7-38.7 x 10-7e.s.u. Further, the optical power limiting threshold was calculated to be 3.646 KW/cm2 for 8 wt % of PS/ZnO nanocomposite foil which is a better candidate to act as an optical limiter. The figure of merit has also been determined that establishes the suitability of nanocomposite foils for optical limiting and/or optical switching applications in the visible region.

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SYNTHESIS, CHARACTERIZATION AND NONLINEAR OPTICAL PROPERTIES OF Si/PVA-PEG NANOCOMPOSITES

Cited by 4 publications

References 19 publications

Room Temperature Detection of Chlorpyrifos Using Thermally Oxidized Manganese and Copper Thin Films

Room Temperature Detection of Chlorpyrifos Using Thermally Oxidized Manganese and Copper Thin Films

Influence of Eu3+ dopant on the third order nonlinear optical properties of PbO/PMMA nanocomposites

Third order nonlinearity and optical power limiting studies of PS/ZnO nanocomposite foils for photonic applications

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