Laser dimple generation can functionalise ceramic surfaces. Dimple characteristics determine the functionalised surface properties, which has numerous applications. Laser parameters and material properties are key factors in the design of the dimple features. Pulse energy, Ep, and average surface roughness, Ra, are important parameters in the dimple production. Thus, the influence of the Ep of InfraRed (IR) nanosecond pulsed laser on the dimple characteristics generated on two Cr2O3 surfaces (as-received and polished) are studied in this work. The increase of the Ep increased the dimples features (Diameter, D, and depth, L). Polished surfaces gave dimples with increased depth while dimples produced on as-received samples were shallow. The energy fluence ablation threshold, φth, is higher for as-received surface than for polished Cr2O3.

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functionalised surface d infrared ir nanosecond pulsed laser dimple features pulse energy ep dimples features fluence ablation threshold th applications laser parameters average surface roughness ra cr2o3 surfaces polished cr2o3 ceramic surfaces dimple characteristics

Mehdi Seddighi, Martin Sharp,Juan Ignacio Ahuir-Torres,.Influence of the surface roughness and pulse energy in the production of dimple features on Cr₂O₃ surfaces. 94 (),930-935.

Mehdi Seddighi, Martin Sharp,Juan Ignacio Ahuir-Torres,"Influence of the surface roughness and pulse energy in the production of dimple features on Cr₂O₃ surfaces" 94

Mehdi Seddighi, Martin Sharp,Juan Ignacio Ahuir-Torres,"Influence of the surface roughness and pulse energy in the production of dimple features on Cr₂O₃ surfaces"