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<identifier>oai:HAL:hal-01226065v1</identifier>
<datestamp>2018-01-11</datestamp>
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<setSpec>subject:phys</setSpec>
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<setSpec>collection:GREMI</setSpec>
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<publisher>HAL CCSD</publisher>
<title lang=en>Evidence of liquid phase during laser-induced periodic surface structures formation induced by accumulative ultraviolet picosecond laser beam</title>
<creator>Huynh, Thi Trang Dai</creator>
<creator>Vayer, Marylène</creator>
<creator>Sauldubois, Audrey</creator>
<creator>Petit, Agnès</creator>
<creator>Semmar, Nadjib</creator>
<contributor>Groupe de recherches sur l'énergétique des milieux ionisés (GREMI) ; Université d'Orléans (UO) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Centre de Recherche sur la Matière Divisée (CRMD) ; Université d'Orléans (UO) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Centre Commun de Caractérisation des Matériaux des Antilles et de la Guyane (C3MAG) ; Université des Antilles et de la Guyane (UAG)</contributor>
<contributor>Groupe de recherches sur l'énergétique des milieux ionisés (GREMI) ; Université d'Orléans (UO) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>ISSN: 0003-6951</source>
<source>EISSN: 0003-6951</source>
<source>Applied Physics Letters</source>
<publisher>American Institute of Physics</publisher>
<identifier>hal-01226065</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01226065</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01226065</source>
<source>Applied Physics Letters, American Institute of Physics, 2015, 〈10.1063/1.4935413〉</source>
<identifier>DOI : 10.1063/1.4935413</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4935413</relation>
<language>en</language>
<subject>[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering</subject>
<subject>[PHYS] Physics [physics]</subject>
<subject>[SPI] Engineering Sciences [physics]</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Laser-induced periodic surface structures (LIPSS) were formed on Cu/Si or Cu/glass thin films using Nd:YAG laser beam (40 ps, 10Hz, and 30mJ/cm2). The study of ablation threshold is always achieved over melting when the variation of the number of pulses increases from 1 to 1000. But the incubation effect is leading to reduce the threshold of melting as increasing the number of laser pulse. Also, real time reflectivity signals exhibit typical behavior to stress the formation of a liquid phase during the laser-processing regime and helps to determine the threshold of soft ablation.Atomic Force Microscopy (AFM) analyses have shown the topology of the micro-crater containing regular spikes with different height. Transmission Electron Microscopy (TEM) allows finally to show three distinguished zones in the close region of isolated protrusions. The central zone is a typical crystallized area of few nanometers surrounded by a mixed poly-crystalline and amorphous area. Finally, in the region far from the protrusion zone, Cu film shows an amorphous structure. The real time reflectivity, AFM, and HR-TEM analyses evidence the formation of a liquid phaseduring the LIPSS formation in the picosecond regime. VC 2015 AIP Publishing LLC</description>
<date>2015-07-02</date>
</dc>
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