One-step generation of ultrahydrophobic aluminum surface patterns by nanosecond lasers

Jagdheesh, Radhakrishnan and Ocaña Moreno, José Luis and García Ballesteros, Juan J. (2015). One-step generation of ultrahydrophobic aluminum surface patterns by nanosecond lasers. In: "Lasers in Manufacturing Conference - LiM 2015", 22 - 25 junio 2015, Munich - Alemania. pp. 1-9.

Description

Title: One-step generation of ultrahydrophobic aluminum surface patterns by nanosecond lasers
Author/s:
  • Jagdheesh, Radhakrishnan
  • Ocaña Moreno, José Luis
  • García Ballesteros, Juan J.
Item Type: Presentation at Congress or Conference (Article)
Event Title: Lasers in Manufacturing Conference - LiM 2015
Event Dates: 22 - 25 junio 2015
Event Location: Munich - Alemania
Title of Book: Proceedings of Lasers in Manufacturing Conference - LiM 2015
Date: 2015
Subjects:
Freetext Keywords: Microstructuring, ultrahydrophobic, nanosecond Lasers
Faculty: E.T.S.I. Industriales (UPM)
Department: Física Aplicada e Ingeniería de Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In recent years, metal surfaces that could mimic the water repellence properties of some natural surfaces have been the area of an intense research due to their potential applications such as self-cleaning, anti-contaminating and anti-sticking applications. Ultra short laser machining/structuring is a promising technique to obtain the dual scale roughness on the metal surface, which promotes the complex interfaces between solid-liquid-air, thus improves the wetting property of the surface. An attempt was made to study the improvement of wetting properties of aluminum by nanosecond laser source in one step process. Flat aluminum sheets of thickness 100 μm were laser machined with ultraviolet laser pulses of 30 ns with different laser parameters to optimize the process parameters. The samples produced at the optimum conditions with respect to contact angle measurement were subjected to microstructure and chemical analysis. The wetting properties were evaluated by static contact angle measurements on the laser patterned surface. The laser patterned microstructures exhibited ultrahydrophobic surface with a maximum contact angle of 180° for the droplet volumes of 8μL.

More information

Item ID: 42436
DC Identifier: http://oa.upm.es/42436/
OAI Identifier: oai:oa.upm.es:42436
Official URL: http://www.wlt.de/lim/
Deposited by: Memoria Investigacion
Deposited on: 05 Aug 2016 08:19
Last Modified: 03 Mar 2017 19:24
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