Optical and sign-flipping nonlinear optical properties of NiO/PMMA/PANI nanocomposite films

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2024-10-22 DOI:10.1016/j.optmat.2024.116297

Anjali Sharma, B. Karthikeyan

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Abstract

In this study, we introduce an efficient nanocomposite system to enhance optical properties of Nickel oxide (NiO) integrated with two polymers matrix. NiO nanoparticles is prepared using chemical co-precipitation method and its nanocomposite films (NCFs) were prepared with poly methyl methacrylate (PMMA) and polyaniline (PANI) using drop-casting method on glass substrate and was optimized by changing the concentration of NiO. The prepared NCFs were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), ultraviolet (UV)-visible absorption spectroscopy, photoluminescence (PL) spectroscopy and X-ray photoelectron (XPS) spectroscopy. The open-aperture z-scan method is employed for nonlinear optical investigations, utilizing a nanosecond pulsed laser with a wavelength of 532 nm for excitation. The findings indicate that the NCFs exhibit sign-flipping nonlinear behavior, indicating a transition from saturable absorption to reverse saturable absorption. This suggests that our NCFs exhibit optical limiting properties and potential for applications in photonic devices, such as optical switches and laser protection systems.

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NiO/PMMA/PANI 纳米复合薄膜的光学和符号翻转非线性光学特性

在本研究中，我们介绍了一种高效的纳米复合材料系统，用于增强氧化镍（NiO）与两种聚合物基质的光学特性。我们采用化学共沉淀法制备了氧化镍纳米粒子，并通过滴铸法在玻璃基底上制备了氧化镍与聚甲基丙烯酸甲酯（PMMA）和聚苯胺（PANI）的纳米复合薄膜（NCFs），并通过改变氧化镍的浓度对其进行了优化。通过 X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、紫外可见吸收光谱、光致发光 (PL) 光谱和 X 射线光电子 (XPS) 光谱对制备的 NCFs 进行了表征。利用波长为 532 纳米的纳秒脉冲激光进行激发，采用开放孔径 Z 扫描法进行非线性光学研究。研究结果表明，NCFs 表现出符号翻转非线性行为，表明其从可饱和吸收过渡到反向可饱和吸收。这表明我们的 NCF 具有光限制特性，有望应用于光子设备，如光学开关和激光保护系统。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.