Laser-Induced Graphitization of Diamond Bulk: The State of the Art (A Review)

Ashikkalieva, K. K.

doi:10.3103/s1541308x22010034

Cited by 6 publications

(2 citation statements)

References 65 publications

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Section: Resultsmentioning

confidence: 99%

“…Laser-written structures displaying ohmic electrical conductivity formed from sub-picosecond pulses at a repetition rate (PRR) of 1 kHz have been observed for several years. 31 Such ohmic “wires” within diamond have been used widely for the fabrication of a range of devices and in particular for 3D detector structures. 32 It is only very recently that investigations of processing at different PRR have been reported, with observations that increasing the laser dose (number of laser pulses interacting with each volume of material, which is equivalent to increasing the PRR at fixed translation speed) impedes the electrical conduction of the NCN.…”

Section: Resultsmentioning

confidence: 99%

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Laser Engineering Nanocarbon Phases within Diamond for Science and Electronics

Salter,

Villar,

Lloret

et al. 2024

ACS Nano

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Diamond, as the densest allotrope of carbon, displays a range of exemplary material properties that are attractive from a device perspective. Despite diamond displaying high carbon–carbon bond strength, ultrashort (femtosecond) pulse laser radiation can provide sufficient energy for highly localized internal breakdown of the diamond lattice. The less-dense carbon structures generated on lattice breakdown are subject to significant pressure from the surrounding diamond matrix, leading to highly unusual formation conditions. By tailoring the laser dose delivered to the diamond, it is shown that it is possible to create continuously modified internal tracks with varying electrical conduction properties. In addition to the widely reported conducting tracks, conditions leading to semiconducting and insulating written tracks have been identified. High-resolution transmission electron microscopy (HRTEM) is used to visualize the structural transformations taking place and provide insight into the different conduction regimes. The HRTEM reveals a highly diverse range of nanocarbon structures are generated by the laser irradiation, including many signatures for different so-called diaphite complexes, which have been seen in meteorite samples and seem to mediate the laser-induced breakdown of the diamond. This work offers insight into possible formation methods for the diamond and related nanocarbon phases found in meteorites.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%