Laser-induced silicon nanocolumns by ablation technique

Ghaly, W.A.; Mohsen, H.T.

doi:10.1080/16878507.2020.1740395

Cited by 3 publications

(3 citation statements)

References 26 publications

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“…Furthermore, the production of colloidal suspensions of nanoparticles can be accomplished by a process known (PLAL) [8]. The production of nanoparticles with PLAL occurs through a single top-down procedure known as the dispersion approach [9]. One of the most notable benefits of this technology is that it does not require vacuum equipment to produce a wide variety of nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nano Silicon Using Lasers

Muaath J. Mahmoud,

Bassam G. Rasheed

2024

IJNeaM

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Two lasers of the same wavelength (1.06 μm) and various specifications were employed to synthesize silicon nanoparticles. The experimental data reveal the formation of stable silicon nanoparticles with different features such as UV-vis absorption, photoluminescence spectrum, Raman spectrum, Zeta potential, and SEM morphology. Theoretical simulations using COMSOL software were adopted to estimate the surface temperature distribution at the silicon surface and underneath. It is found that maximum temperatures of about (5700 K) and (4600 K) were generated when a Q-switched laser pulse of (10 ns) and fiber laser pulse of (127 ns) were used, respectively. While the recoil pressure at the silicon surface was (6.5*105 N/m2) and (1*103 N/m2) when Nd:YAG and fiber laser were used respectively. It found that increasing the laser energy for Nd:YAG laser and fiber laser power leads to a blue shift of the absorption spectra while the absorption intensity increases with the number of laser pulses and irradiation time. Raman spectroscopy for the prepared silicon nanoparticles was carried out. The Raman peaks for silicon nanoparticles reveal the formation of amorphous silicon. These peaks were observed at (482) and (475 cm-1) when Nd:YAG and fiber lasers were used to produce those nanoparticles. While the photoluminescence of the prepared silicon nanoparticles exhibits peaks at (457 nm) and (495 nm) for Nd:YAG and fiber lasers. The zeta potential reveals that silicon nanoparticle stability is greater for nanoparticles produced by fiber lasers (27 mv) than those produced by Nd:YAG lasers (17 mv) for three months. The corresponding silicon nanoparticle sizes refer to (3.8 nm) and (6 nm). Potential applications of silicon nanoparticles in optoelectronics and biological imaging can be conducted due to the controllable laser micro/nano machining process.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Nano Silicon Using Lasers

Muaath J. Mahmoud,

Bassam G. Rasheed

2024

IJNeaM

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“…It is a typical substrate material for many different types of electronic devices and finds comprehensive application in the semiconductor sector. In both solar cells and other types of chips, polycrystalline and amorphous silicon can be used [8].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Laser Micro/Nano Processing of Silicon and Quartz

Muaath J. Mahmoud,

Bassam G. Rasheed,

Muammel M. Hanon

2024

IJNeaM

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This research paper explores the application of three laser systems, namely the Nd:YAG laser, fiber laser, and CO2 laser, for the micro/nano machining of silicon and quartz materials. The experimental results demonstrate the successful formation of stable silicon nanoparticles with reduced dimensions. Additionally, a quartz sheet was utilized to create a microlens array. The laser microprocessing technique was enhanced through the implementation of design of experiments (DOE) analysis. A Box-Behnken design (BBD) software was employed to conduct 17 tests, investigating the influence of laser parameters on the microprocessing outcomes. The COMSOL software was utilized for theoretical calculations to determine the distribution of surface temperatures and subsurface temperatures of silicon and quartz. The maximum temperatures achieved were approximately 5700 K for silicon and 2630 K for quartz. Numerical optimization using DOE software improved the production of silicon nanoparticles and quartz microlens, producing silicon nanoparticles wavelength peak and absorption peak values of 318.2 nm and 0.39, respectively. Additionally, quartz microlens numerical aperture and surface roughness improved to 0.494 and 4.64 nm, respectively. Due to the precise control offered by the laser micro/nano machining process, the findings of this study hold potential for diverse applications in optoelectronics and biological imaging that can leverage the unique characteristics of silicon nanoparticles and microlens arrays.

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“…It is widely used in the semiconductor industry and is frequently used as a substrate for a variety of electronic devices. Polycrystalline and amorphous silicon are both suitable for use in solar cells and various chips [6]. Moreover, glass is suitable for a wide range of micro and nanotechnology applications.…”

Section: Introductionmentioning

confidence: 99%

Laser - Produced Functional Surfaces of Silicon and Quartz

Mahmoud,

Rasheed

2023

AMM

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Fiber laser of 1064 nm wavelength was employed for micro/nano machining process of silicon and quartz substrates. The experimental data reveal formation of silicon nanoparticles by pulse laser ablation in liquid. Various characterization techniques were used such as UV-Visible absorption, SEM morphology to examine silicon nanoparticles. Moreover, generation of microbeams from micro lens array was created by direct writing of fiber laser on quartz. Theoretical calculations using COMSOL software were adopted to estimate the surface temperature distribution at silicon and quartz surface and underneath. It is found that maximum temperature of about (4600 K) and (2400 K) for silicon and quartz respectively when 15 W laser power, 127 ns pulse duration, 30 KHz frequency and 100 mm/sec laser speed was used. Potential applications of silicon nanoparticles and microbeams array in optoelectronics and biological imaging can be conducted due to the controllable laser micro/nano machining process.

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Laser-induced silicon nanocolumns by ablation technique

Cited by 3 publications

References 26 publications

Synthesis of Nano Silicon Using Lasers

Synthesis of Nano Silicon Using Lasers

Optimization of Laser Micro/Nano Processing of Silicon and Quartz

Laser - Produced Functional Surfaces of Silicon and Quartz

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