Ultra-short pulsed laser ablation of decagonal AlCoNi and AlCoCuNi quasicrystals

Singh, Bibek Kumar; Banerjee, Dipanjan; Mangababu, A.; Shadangi, Yagnesh; Mukhopadhyay, N.K.; Rawat, Rajesh; Pathak, A.P.; Rao, S. Venugopal; Tiwari, Archana; Tripathi, A.

doi:10.1016/j.jallcom.2023.172238

Cited by 4 publications

(1 citation statement)

References 69 publications

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“…Femtosecond lasers, characterized by ultrashort pulse durations, require significantly lower average power compared to conventional continuous wave laser or pulsed lasers with a long pulse width [ 35 , 36 ]. This advancement not only reduces energy consumption but also enhances the control over particle size and distribution, paving the way for more efficient and precise HEA nanoparticle synthesis as well as for many other fields of laser manufacturing and processing [ 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Unique Behaviors of High-Purity HEA Nanoparticles Using Femtosecond Laser Ablation

Fieser,

Lan,

Gulino

et al. 2024

Nanomaterials

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High-entropy alloys (HEAs) are a class of metal alloys consisting of four or more molar equal or near-equal elements. HEA nanomaterials have garnered significant interest due to their wide range of applications, such as electrocatalysis, welding, and brazing. Their unique multi-principle high-entropy effect allows for the tailoring of the alloy composition to facilitate specific electrochemical reactions. This study focuses on the synthesis of high-purity HEA nanoparticles using the method of femtosecond laser ablation synthesis in liquid. The use of ultrashort energy pulses in femtosecond lasers enables uniform ablation of materials at significantly lower power levels compared to longer pulse or continuous pulse lasers. We investigate how various femtosecond laser parameters affect the morphology, phase, and other characteristics of the synthesized nanoparticles. An innovative aspect of our solution is its ability to rapidly generate multi-component nanoparticles with a high fidelity as the input multi-component target material at a significant yielding rate. Our research thus focuses on a novel synthesis of high-entropy alloying CuCoMn1.75NiFe0.25 nanoparticles. We explore the characterization and unique properties of the nanoparticles and consider their electrocatalytic applications, including high power density aluminum air batteries, as well as their efficacy in the oxygen reduction reaction (ORR). Additionally, we report a unique nanowire fabrication phenomenon achieved through nanojoining. The findings from this study shed light on the potential of femtosecond laser ablation synthesis in liquid (FLASiL) as a promising technique for producing high-purity HEA nanoparticles.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Unique Behaviors of High-Purity HEA Nanoparticles Using Femtosecond Laser Ablation

Fieser,

Lan,

Gulino

et al. 2024

Nanomaterials

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Structural characterization of AlCuFe icosahedral quasicrystal nanoparticles synthesized using femtosecond laser ablation

Singh,

Banerjee,

Mangababu

et al. 2024

J Mater Sci

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Laser Generation of AlCrCuFeNi High-Entropy Alloy Nanocolloids

Rawat,

Blanchard,

Shadangi

et al. 2024

J. Phys. Chem. C

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We report on the synthesis of AlCrCuFeNi highentropy alloy (HEA) nanoparticles (NPs) using pulsed laser ablation of the AlCrCuFeNi target in two different solvents, deionized water (DIW) and anhydrous ethanol (EtOH). The lasergenerated AlCrCuFeNi HEA NPs in DIW and EtOH show a bimodal size distribution of the NPs. The compositional, phase, and structural analysis using microscopic and spectroscopic techniques reveals the formation of different phases and nanostructures of AlCrCuFeNi NPs in these solvents. In DIW, the formation of a core−shell structure in which the shell is rich in Al and O and the core is rich in Cu−Ni was observed. However, in EtOH, the formation of solid solution AlCrCuFeNi HEA NPs was observed. The scanning transmission electron microscopy−EDS analysis revealed that the segregation of Al is driven by the formation of an oxide. The statistical analysis of the chemical composition of the particles revealed the different trends as a function of particle size. Larger NPs show variation in their composition, and the content of O plays a crucial role in the phase segregation of HEA NPs, leading to compositional variation in the oxide layer and the core of the HEA NPs. However, in small NPs, the homogeneous variation of all the elements in HEA was observed. Further, the calculation of physiochemical and thermodynamic parameters indicates the formation of a solid solution with a mixture of facecentered cubic and body-centered cubic phases in HEA NPs. Based on the experimental results, a possible growth mechanism of different morphologies and phases of these NPs during pulsed laser ablation in liquid is discussed.

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Ultra-short pulsed laser ablation of decagonal AlCoNi and AlCoCuNi quasicrystals

Cited by 4 publications

References 69 publications

Synthesis and Unique Behaviors of High-Purity HEA Nanoparticles Using Femtosecond Laser Ablation

Synthesis and Unique Behaviors of High-Purity HEA Nanoparticles Using Femtosecond Laser Ablation

Structural characterization of AlCuFe icosahedral quasicrystal nanoparticles synthesized using femtosecond laser ablation

Laser Generation of AlCrCuFeNi High-Entropy Alloy Nanocolloids

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