Mechanisms of micro-groove formation on single-crystal diamond by a nanosecond pulsed laser

Takayama, Nozomi; Yan, Jiwang

doi:10.1016/j.jmatprotec.2016.12.032

Cited by 36 publications

(15 citation statements)

References 31 publications

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“…Owing to a relatively short electron-lattice relaxation time of 10 -10 -10 -12 s, that is up to three orders of magnitude smaller, compared to ns-laser pulse duration [38], the ns-laser ablation processes are thermally destructive to the sample media as extended HAZs are generated in the process. Takayama et al [69] classified four different forms of damage and their causes that occur during ns-laser processing of diamond (employing 15.6 ns, 532 nm, P avg > 1W system as a study model), namely: cracking, groove shape deformation, ripple formation, and debris deposition. Cracking resulted from a rapid temperature change.…”

Section: Laser Micromachining Of Diamondmentioning

confidence: 99%

“…Groove shape deformation resulted from an improved absorption of the plasma generated through nslaser irradiation. Surface ripples were formed by the ns-laser beam interference with the groove walls, whereas laser induced debris deposition was attributed to the use of samplespecific ablation regimes [69]. Cadot et al [10] (see Fig.…”

Section: Laser Micromachining Of Diamondmentioning

confidence: 99%

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Femtosecond laser micromachining of diamond: Current research status, applications and challenges

Ali

Litvinyuk

Rybachuk

2021

Carbon

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Ultra-fast femtosecond (fs) lasers provide a unique technological opportunity to precisely and efficiently micromachine materials with minimal thermal damage owing to the reduced heat transfer into the bulk of the work material offered by short pulse duration, high laser intensity and focused optical energy delivered on a timescale shorter than the rate of thermal diffusion into the surrounding area of a beam foci. There is an increasing demand to further develop the fs-machining technology to improve the machining quality, minimize the total machining time and increase the flexibility of machining complex patterns on diamond. This article offers an overview of recent research findings on the application of fs-laser technology to micromachine diamond. The laser technology to precisely micromachine diamond is discussed and detailed, with a focus on the use of fs-laser irradiation systems and their characteristics, laser interaction with various types of diamonds, processing and the subsequent post-processing of the irradiated samples and, appropriate sample characterisation methods. Finally, the current and emerging application areas are discussed, and the challenges and the future research prospects in the fs-laser micromachining field are also identified.

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Section: Laser Micromachining Of Diamondmentioning

confidence: 99%

Section: Laser Micromachining Of Diamondmentioning

confidence: 99%

Femtosecond laser micromachining of diamond: Current research status, applications and challenges

Ali

Litvinyuk

Rybachuk

2021

Carbon

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“…This is because microchannel can be fabricated by micromachining process with the high-quality output. In contrast, nanochannel is fabricated by laser machining process with some issues output such as cracking, ripple formation, shape deformation, and debris deposition [150,151].…”

Section: Distilled Watermentioning

confidence: 99%

A review of passive methods in microchannel heat sink application through advanced geometric structure and nanofluids: Current advancements and challenges

Japar

Sidik

Saidur

et al. 2020

Nanotechnology Reviews

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Microchannel heat sink (MCHS) is an advanced cooling technique to fulfil the cooling demand for electronic devices installed with high-power integrated circuit packages (microchips). Various microchannel designs have been innovated to improve the heat transfer performance in an MCHS. Specifically, the utilisation of nanotechnology in the form of nanofluid in an MCHS attracted the attention of researchers because of considerable enhancement of thermal conductivity in nanofluid even at a low nanoparticle concentration. However, a high-pressure drop was the main limitation as it controls the MCHS performance resulted from heat transfer augmentation. Therefore, this study aimed to critically summarise the challenges and limitations of both single and hybrid passive methods of MCHS. Furthermore, the performance of nanofluid as a coolant in the MCHS as affected by the type and concentration of nanoparticle and the type of base fluid was reviewed systematically. The review indicated that the hybrid MCHS provides a better cooling performance than MCHS with the single passive method as the former results in a higher heat transfer rate with minimal pressure drop penalty. Besides that, further heat transfer performance can be enhanced by dispersing aluminium dioxide (Al2O3) nanoparticles with a concentration of less than 2.0% (v/v) in the water-based coolant.

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“…Obviously, the technique is extremely sensitive to the linear polarization direction with respect to the crystal-orientation, resulting in different morphologies as shown in Figure 4. It is worth mentioning that, recently, nanoscale ripples were found and studied in the fabrication of grooves on diamond surfaces [55] performed by a nanosecond-pulsed Nd:YAG laser operating at the second harmonic: λ = 532 nm.…”

mentioning

confidence: 99%

“…On the other hand, Reference [58] highlighted the presence at the same time of three types of LIPSSs on the diamond surface after a fs-laser treatment with wavelengths of 400 and 800 nm: long LIPSS perpendicular to the laser polarization with periodicity dependent on the incidence angle, short perpendicular LIPSS with periodicity shorter than a third of λ and slightly dependent on the incidence angle, and short LIPSS parallel to the laser polarization with constant periodicity independent from the incidence angle. It is worth mentioning that, recently, nanoscale ripples were found and studied in the fabrication of grooves on diamond surfaces [55] performed by a nanosecond-pulsed Nd:YAG laser operating at the second harmonic: λ = 532 nm.…”

mentioning

confidence: 99%

Surface Texturing of CVD Diamond Assisted by Ultrashort Laser Pulses

et al. 2017

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Diamond is a wide bandgap semiconductor with excellent physical properties which allow it to operate under extreme conditions. However, the technological use of diamond was mostly conceived for the fabrication of ultraviolet, ionizing radiation and nuclear detectors, of electron emitters, and of power electronic devices. The use of nanosecond pulse excimer lasers enabled the microstructuring of diamond surfaces, and refined techniques such as controlled ablation through graphitization and etching by two-photon surface excitation are being exploited for the nanostructuring of diamond. On the other hand, ultrashort pulse lasers paved the way for a more accurate diamond microstructuring, due to reduced thermal effects, as well as an effective surface nanostructuring, based on the formation of periodic structures at the nanoscale. It resulted in drastic modifications of the optical and electronic properties of diamond, of which "black diamond" films are an example for future high-temperature solar cells as well as for advanced optoelectronic platforms. Although experiments on diamond nanostructuring started almost 20 years ago, real applications are only today under implementation.

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Mechanisms of micro-groove formation on single-crystal diamond by a nanosecond pulsed laser

Cited by 36 publications

References 31 publications

Femtosecond laser micromachining of diamond: Current research status, applications and challenges

Femtosecond laser micromachining of diamond: Current research status, applications and challenges

A review of passive methods in microchannel heat sink application through advanced geometric structure and nanofluids: Current advancements and challenges

Surface Texturing of CVD Diamond Assisted by Ultrashort Laser Pulses

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