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Research Papers

Laser Nanopatterning for Wettability Applications

[+] Author and Article Information
Leonardo Orazi

Department of Sciences and
Methods for Engineering,
University of Modena and Reggio Emilia,
Via Amendola 2,
Reggio Emilia 42121, Italy
e-mail: leonardo.orazi@unimore.it

Iaroslav Gnilitskyi

Department of Sciences and
Methods for Engineering,
University of Modena and Reggio Emilia,
Via Amendola 2,
Reggio Emilia 42121, Italy
e-mail: iaroslav.gnilitskyi@unimore.it

Ana Paula Serro

Instituto Superior Tecnico,
Structural Chemistry Centre,
Avenida Rovisco Pais,
Lisbon 1049-001, Portugal;
Instituto Superior de Ciencias da Saude,
Egas Moniz, Centro de Investigacao
Interdisciplinar Egas Moniz,
Campus Universitrio,
Quinta da Granja, Monte da Caparica,
Caparica 2829-511, Portugal
e-mail: anapaula.serro@tecnico.ulisboa.pt

1Corresponding author.

Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MICRO- AND NANO-MANUFACTURING. Manuscript received November 24, 2016; final manuscript received February 1, 2017; published online March 24, 2017. Editor: Jian Cao.

J. Micro Nano-Manuf 5(2), 021008 (Mar 24, 2017) (8 pages) Paper No: JMNM-16-1068; doi: 10.1115/1.4035956 History: Received November 24, 2016; Revised February 01, 2017

We report on periodic, homogeneous nanoripples fabricated on stainless steel (SS), copper (Cu), and aluminum (Al) substrates using an ytterbium pulsed femtosecond laser. These structures called laser induced periodic surface structures (LIPSS) are processed at a relatively high-speed and over large areas. This paper investigates the effect of LIPSS on a wettability behavior of SS, Cu, and Al surfaces. It is shown that nanoripples significantly influenced the wettability character of these metals turning them from hydrophilic to hydrophobic behavior.

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References

Figures

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Fig. 1

LIPSS on different materials obtained by changing the polarization plane angle θP . Scanning direction is horizontal.

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Fig. 2

AISI 316L: surface treated under TSS1 condition. Secondary HSF LIPSS oriented as the polarization plane are shown.

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Fig. 3

AISI 316L: surface treated under TSS4 condition. Secondary HSF LIPSS oriented as the polarization plane are shown.

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Fig. 4

Energy-dispersive X-ray spectroscopy (EDS) analysis of untreated (left) and treated (right) surfaces of aluminum

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Fig. 5

EDS analysis of untreated (left) and treated (right) by LIPSS surfaces of copper

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Fig. 6

EDS analysis of untreated (upper) and treated (lower) by LIPSS surfaces of AISI 316L

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Fig. 7

AFM analysis of the surfaces for the three materials

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Fig. 8

Wettability results

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