A visible light scattering study of silicon nanoparticles created in various ways

Nomoev, Sergey; Adam, Pierre‐Michel; Бардаханов, С. П.; Васильевский, И. С.; Movsesyan, Artur; Khartaeva, E. Ch.

doi:10.1063/5.0028254

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…The ability of a nanofluid to absorb solar energy directly depends on the concentration of particles and their properties-shape, size, and distribution [29][30][31][32][33]. Studies have shown that one can choose the optimal concentration of particles that provide the best absorption of radiant energy [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Influence of Particle Size Distribution on the Optical Properties of Fine-Dispersed Suspensions

Kuzmenkov¹,

Struchalin²,

Litvintsova³

et al. 2022

Fluid Dynamics &Amp; Materials Processing

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Section: Introductionmentioning

confidence: 99%

Influence of Particle Size Distribution on the Optical Properties of Fine-Dispersed Suspensions

Kuzmenkov¹,

Struchalin²,

Litvintsova³

et al. 2022

Fluid Dynamics &Amp; Materials Processing

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“…The formation of nanoparticles has attracted attention because the nanoparticles exhibit various optical properties, such as color resonance [1][2][3][4] and tunability of transmittance, reflectance, or absorbance [5][6][7], and are applied to flat lenses [8,9], biosensors [10,11], and solar cell devices [12,13]. Si nanoparticles can be fabricated by using chemical synthesis process [14], deposition [15], and electron accelerator [16]. However, owing to the complicated fabrication processes and low throughput, the laser scanning on a material surface has been alternatively studied because of the fast and simple process [17,18].…”

Section: Introductionmentioning

confidence: 99%

Laser-induced Si nanoparticles and the application of RGB resonance color-filters

Hwang¹,

Kang²,

Cheong³

2022

Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XIX

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Optical resonances of nanoparticle have been studied for a long time in various optical devices. However, the difficulties in fabrication of uniform nanoparticles hinders the applications. Herein, we formed Si nanoparticles having a uniform size via laser irradiation on an amorphous-Si thin film and found the optical resonances of red, green, and blue (RGB) colors originated from the Si nanoparticles. Two-dimensional scanning of 355-nm wavelength of nanosecond laser with a Gaussian spot beam created Si nanoparticles of 100~200 nm at laser fluences of 150~200 mJ/cm2 . We demonstrated the color resonances could be tuned to red, green, and blue adjusting the laser fluence and scan pitch. The size and distribution are characterized by scanning electron microscopy (SEM), which revealed the Si nanoparticles are ellipsoidal shape, embedded in the residual Si layer. The optical properties are measured by dark field microscopy and fiber coupled spectroscopy. The RGB samples show peak wavelengths of 628 nm, 570 nm, and 495 nm, respectively, which are attributed to the dipole resonance as predicted by the Mie theory.

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Resonance colors in an amorphous-Si thin layer irradiated by an ultraviolet nanosecond laser

2022

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The optical resonances of nanoparticles have drawn considerable attention in academia and industry; however, the formation of uniform nanoparticles has been challenging, hindering their application. Herein, we propose that reflective-type color filters can be achieved using the optical resonance effect arising from Si nanoparticles created on an amorphous Si thin film via laser irradiation. Multiple equally spaced irradiations of an amorphous-Si surface by a Gaussian laser beam created Si nanoparticles with sizes of 100–200 nm at laser fluences in the range of 150–200 mJ/cm2. Furthermore, we demonstrated that the resonance colors could be tuned to red, green, and blue by adjusting the laser fluence and scan speed. The optical properties of the nanoparticles were analyzed using dark-field microscopy, scanning electron microscopy, and transmission electron microscopy. According to the measured nanoparticle geometries and spectral data, the Si nanoparticles are spheroidal shapes embedded in the Si layer, and simulations indicate that the resonance colors originate from electric and magnetic dipoles inside the Si nanoparticles. The results could inform the fabrication of color filters in reflective display device or sensor applications through a simple laser scanning process.

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A visible light scattering study of silicon nanoparticles created in various ways

Cited by 3 publications

References 14 publications

Influence of Particle Size Distribution on the Optical Properties of Fine-Dispersed Suspensions

Influence of Particle Size Distribution on the Optical Properties of Fine-Dispersed Suspensions

Laser-induced Si nanoparticles and the application of RGB resonance color-filters

Resonance colors in an amorphous-Si thin layer irradiated by an ultraviolet nanosecond laser

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