Control of nonlinear refractive index of AuNPs doped with nematic liquid crystal under external electric field

Mbarak, H.; Kodeary, A. K.; Hamidi, Seyedeh Mehri; Mohajarani, E.; Zaatar, Y.

doi:10.1016/j.ijleo.2019.163299

Cited by 15 publications

(6 citation statements)

References 27 publications

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“…Based on the previous studies on the nonlinear optical properties of Au NPs [ 18 , 19 , 22 , 23 , 24 , 52 , 53 , 54 , 55 , 56 ] and the current study, we could conclude that the NL behavior and third-order nonlinear parameters of our Au NP samples were strongly dependent on the nanoparticle production method, as well as the laser parameters (such as wavelength, reputation rate, pulse duration, and peak intensity).…”

Section: Resultssupporting

confidence: 62%

Using Femtosecond Laser Pulses to Explore the Nonlinear Optical Properties of Au NP Colloids That Were Synthesized by Laser Ablation

et al. 2022

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In this study, we experimentally investigated the nonlinear optical properties of Au nanoparticles (Au NPs) that were prepared in pure distilled water using the laser ablation method. The Au NPs were prepared using a nanosecond Nd:YAG laser with an ablation time of 5 or 10 min at a constant laser energy of 100 mJ. The structure and the linear optical properties of the Au NPs were investigated using a transmission electron microscope (TEM) and UV-visible spectrophotometer analysis, respectively. The TEM measurements showed that the average size of the Au NPs varied from 20.3 to 14.1 nm, depending on the laser ablation time. The z-scan technique was used to investigate the nonlinear refractive index (n2) and nonlinear absorption coefficient (γ) of the Au NPs, which were irradiated at different excitation wavelengths that ranged from 740 to 820 nm and at different average powers that ranged from 0.8 to 1.6 W. The Au NP samples exhibited a reverse saturable absorption (RSA) behavior that increased when the excitation wavelength and/or incident laser power increased. In addition, the Au NPs acted as a self-defocusing material whenever the excitation wavelength or incident power were modified.

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Section: Resultssupporting

confidence: 62%

Using Femtosecond Laser Pulses to Explore the Nonlinear Optical Properties of Au NP Colloids That Were Synthesized by Laser Ablation

et al. 2022

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“…[19,20] The nanostructures with two different core/shell nanoparticles can exhibit outstanding properties. [21,22] Massive reports are available on metal-nanoparticles such as Cu, Ag, Pt, Au owing to their considerable plasmonic properties. [23,24] Various piezoelectric nanomaterials are being used in piezophotocatalytic applications.…”

Section: Piezoelectric Nanomaterialsmentioning

confidence: 99%

A Review on Piezoelectric Materials and Their Applications

Sekhar

Veena²,

Kumar

et al. 2022

Cryst. Res. Technol.

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Piezoelectric materials have the merits of fast response, speed, and high precision. These materials have been widely investigated for functional device applications such as sensors, actuators, microelectromechanical systems (MEMS), nanoelectromechanical systems (NEMS), 3D-printing etc. This paper offers a review on recent advances in piezoelectric materials and their limitations. In addition, different piezoelectric materials such as lead-based, lead-free piezoelectric materials etc. are discussed, and their applications in the catalysis, energy harvesting, sensors, biomedical engineering, and additive manufacturing are addressed.

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“…At present, the design and synthesis of high-performance NLO materials in organic and inorganic systems still meet major challenges [ 4 ]. In recent decades, many materials exhibited good optical nonlinearity, including organic materials [ 5 , 6 , 7 , 8 ], perovskite quantum dots [ 9 ], nanoclusters [ 10 , 11 , 12 , 13 , 14 ], organic-inorganic hybrid materials [ 1 , 15 , 16 ], etc. Among them, organic compounds that are easy to synthesize, with the advance of lower dielectric coefficients, have attracted wide attention [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Design of A-D-A-Type Organic Third-Order Nonlinear Optical Materials Based on Benzodithiophene: A DFT Study

Gong

Tong

et al. 2022

Nanomaterials

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The acceptor-donor-acceptor (A-D-A) type conjugated organic molecule has been widely applied in the organic optoelectronics field. A total of Nine compounds (1–9) were designed under the A-D-A framework, with the electron donor benzodithiophene as the core and dicyanomethylene as the acceptor moiety, modifying the benzodithiophene with the phenyl, naphthyl, and difluorinated phenyl groups. The conjugation length can be changed by introducing a thiophene π-conjugated bridge. The geometric structures, electronic structure, excited state properties, aromaticity, and the static- and frequency-dependent second hyperpolarizabilities were investigated by employing high-precision density functional theory (DFT) calculations with an aug-cc-pVDZ basis set. As a result, the three compounds with the longest conjugation length exhibit a smaller energy gap (Egap), larger UV-vis absorption coefficient, and response range, which are the three strongest third-order nonlinear optical (NLO) response properties in this work. This work systematically explored the connection between molecular structure and NLO response, which provides a rational design strategy for high-performance organic NLO materials.

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Control of nonlinear refractive index of AuNPs doped with nematic liquid crystal under external electric field

Cited by 15 publications

References 27 publications

Using Femtosecond Laser Pulses to Explore the Nonlinear Optical Properties of Au NP Colloids That Were Synthesized by Laser Ablation

Using Femtosecond Laser Pulses to Explore the Nonlinear Optical Properties of Au NP Colloids That Were Synthesized by Laser Ablation

A Review on Piezoelectric Materials and Their Applications

Design of A-D-A-Type Organic Third-Order Nonlinear Optical Materials Based on Benzodithiophene: A DFT Study

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