Picosecond laser ablation of polycrystalline CVD diamond

Jianchao, Zhai; Zhang, Quanli; Zhu, Yueying

doi:10.1016/j.optlastec.2022.108403

Cited by 7 publications

(2 citation statements)

References 28 publications

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“…Nanosecond pulsed laser ablation, which is recognized for its high-peak power and short interaction time, has been extensively utilized for achieving localized thermal effects, facilitating the thermal-induced graphitization of diamond. As compared to femtosecond lasers and picosecond lasers, a nanosecond laser has longer pulse widths and higher ablation rates, which makes diamond easier to be graphitized [ 12 , 14 , 15 , 16 ]. We also note that the ultrashort pulsed laser with a reduced thermal effect and effective propensity of periodic surface nanoscale structures is beneficial for accurately diamond microstructuring [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Parametric Investigation of Nanosecond Laser-Induced Surface Graphitization of Nano-Crystalline Diamond

Yuan,

Zhao,

Zhang

2024

Materials

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While nano-crystalline diamond (NCD) is a promising engineering composite material for its unique mechanical properties, achieving the ultrahigh surface quality of NCD-based components through conventional grinding and polishing is challenging due to its exceptional hardness and brittleness. In the present work, we experimentally investigate the nanosecond laser ablation-induced graphitization characteristics of NCD, which provides a critical pretreatment method of NCD for realizing its superlative surface finish. Specifically, systematic experimental investigations of the nanosecond pulsed laser ablation of NCD are carried out, in which the characteristics of graphitization are qualitatively characterized by the Raman spectroscopy detection of the ablated area of the microhole and microgroove. Subsequently, the influence of laser processing parameters on the degree and morphological characteristics of graphitization is evaluated based on experimental data and related interpretation, from which optimized parameters for maximizing the graphitization of NCD are then identified. The findings reported in the current work provide guidance for promoting the machinability of NCD via laser irradiation-induced surface modification.

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Section: Introductionmentioning

confidence: 99%

Experimental Parametric Investigation of Nanosecond Laser-Induced Surface Graphitization of Nano-Crystalline Diamond

Yuan,

Zhao,

Zhang

2024

Materials

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“…The laser pulse interaction with solid targets has steadily attracted attention both in fundamental and applied fields of research owing to different technological applications. [1][2][3] The surface properties, such as optical absorptivity, hardness, and hydrophobic properties, can be modified by using laser pulses with solid targets. [4][5][6] The ablation process has been utilized in micro and nanostructure synthesis, [7,8] cleaning of contaminants, [9] and laser shock processing.…”

Section: Introductionmentioning

confidence: 99%

Laser Ablation of the Flexible Graphite: A New Way to Create a Graphene‐Based Flexible Substrate

Jalili

Ghanbari

Malekfar

et al. 2023

Physica Status Solidi (a)

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The morphological and structural changes of an ablated flexible graphite in air and acetone ablation environments were studied here. From field emission scanning electron microscopy (FESEM) images, vertically aligned graphene nanosheets were found on the surface of ablated target in acetone. Measured ablation depth values for the ablated target in water were generally higher than those for the ablated target in air. X‐ray diffraction (XRD) analysis revealed that the (002) peak position and full width at half maximum (FWHM) of this peak in the ablated flexible graphite in the air increased. The gap between the highest occupied molecular orbitals (HOMO) and the lowest unoccupied molecular orbitals (LUMO), i.e., the band gap of the ablated target, indicating that the energy band gap of the ablated target in two ablation media increased compared to the nonirradiated target. Raman analysis from different points of the surface of the ablated target in both ablation media demonstrated the presence of bulk defects on the ablated target in the air, instead the edge defects were found for the ablated target in acetone. From Raman spectra, there were no single‐layer graphene nanosheets pinned on the surface of the target in acetone.

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Precision machining of single crystal diamond cutting tool via picosecond laser irradiation

Zhao¹,

Ji²,

Wang³

2023

International Journal of Refractory Metals and Hard Materials

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Picosecond laser ablation of polycrystalline CVD diamond

Cited by 7 publications

References 28 publications

Experimental Parametric Investigation of Nanosecond Laser-Induced Surface Graphitization of Nano-Crystalline Diamond

Experimental Parametric Investigation of Nanosecond Laser-Induced Surface Graphitization of Nano-Crystalline Diamond

Laser Ablation of the Flexible Graphite: A New Way to Create a Graphene‐Based Flexible Substrate

Precision machining of single crystal diamond cutting tool via picosecond laser irradiation

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